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Could the shingles vaccine lower your risk of dementia?

<a href="https://theconversation.com/profiles/ibrahim-javed-1552271">Ibrahim Javed</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> A <a href="https://www.nature.com/articles/s41591-024-03201-5">recent study</a> has suggested Shingrix, a relatively new vaccine given to protect older adults against shingles, may delay the onset of dementia. This might seem like a bizarre link, but actually, <a href="https://pubmed.ncbi.nlm.nih.gov/34697158/">research</a> has previously shown an older version of the shingles vaccine, Zostavax, reduced the risk of dementia. In this new study, published last week in the journal Nature Medicine, researchers from the United Kingdom found Shingrix delayed dementia onset by 17% compared with Zostavax. So how did the researchers work this out, and how could a shingles vaccine affect dementia risk? <h2>From Zostavax to Shingrix</h2> Shingles is a viral infection caused by the varicella-zoster virus. It causes <a href="https://www.healthdirect.gov.au/shingles">painful rashes</a>, and affects older people in particular. Previously, Zostavax was used to vaccinate against shingles. It was administered as a single shot and provided good protection for about <a href="https://immunisationhandbook.health.gov.au/contents/vaccine-preventable-diseases/zoster-herpes-zoster">five years</a>. Shingrix has been developed based on a newer vaccine technology, and is thought to offer stronger and longer-lasting protection. Given in two doses, it’s now the preferred option for shingles vaccination in Australia and elsewhere. In November 2023, Shingrix replaced Zostavax on the <a href="https://www.health.gov.au/news/national-immunisation-program-changes-to-shingles-vaccination-from-1-november-2023">National Immunisation Program</a>, making it available for free to those at highest risk of complications from shingles. This includes all adults aged 65 and over, First Nations people aged 50 and older, and younger adults with certain medical conditions that affect their immune systems. <h2>What the study found</h2> Shingrix was approved by the US Food and Drugs Administration in <a href="https://www.drugs.com/history/shingrix.html">October 2017</a>. The researchers in the new study used the transition from Zostavax to Shingrix in the United States as an opportunity for research. They selected 103,837 people who received Zostavax (between October 2014 and September 2017) and compared them with 103,837 people who received Shingrix (between November 2017 and October 2020). By analysing data from electronic health records, they found people who received Shingrix had a 17% increase in “diagnosis-free time” during the follow-up period (up to six years after vaccination) compared with those who received Zostavax. This was equivalent to an average of 164 extra days without a dementia diagnosis. The researchers also compared the shingles vaccines to other vaccines: influenza, and a combined vaccine for tetanus, diphtheria and pertussis. Shingrix and Zostavax performed around 14–27% better in lowering the risk of a dementia diagnosis, with Shingrix associated with a greater improvement. The benefits of Shingrix in terms of dementia risk were significant for both sexes, but more pronounced for women. This is not entirely surprising, because we know women have <a href="https://www.alzheimers.org.uk/blog/why-dementia-different-women">a higher risk</a> of developing dementia due to interplay of biological factors. These include being more sensitive to certain genetic mutations associated with dementia and hormonal differences. <h2>Why the link?</h2> The idea that vaccination against viral infection can lower the risk of dementia has been around for more than two decades. Associations have been <a href="https://pubmed.ncbi.nlm.nih.gov/11762573/">observed</a> between vaccines, such as those for diphtheria, tetanus, polio and influenza, and subsequent dementia risk. Research has shown Zostavax vaccination can <a href="https://bmjopen.bmj.com/content/11/10/e045871">reduce the risk</a> of developing dementia by 20% compared with people who are unvaccinated. But it may not be that the vaccines themselves protect against dementia. Rather, it may be the resulting lack of viral infection creating this effect. Research indicates bacterial infections in the gut, as well as viral infections, are associated with a <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10169152/">higher risk of dementia</a>. Notably, untreated infections with herpes simplex (herpes) virus – closely related to the varicella-zoster virus that causes shingles – can <a href="https://alz-journals.onlinelibrary.wiley.com/doi/10.1002/trc2.12119">significantly increase</a> the risk of developing dementia. Research has also shown shingles increases the risk of a later dementia diagnosis. The mechanism is not entirely clear. But there are two potential pathways which may help us understand why infections could increase the risk of dementia. First, certain molecules are produced when a baby is developing in the womb to help with the body’s development. These molecules have the potential to cause inflammation and accelerate ageing, so the production of these molecules is silenced around birth. However, viral infections such as shingles can <a href="https://doi.org/10.1016/j.virol.2018.07.011">reactivate</a> the production of these molecules in adult life which could <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8717685/#:%7E:text=The%20disease%20mechanisms%20of%20AD,may%20lead%20to%20new%20therapies.">hypothetically lead to dementia</a>. Second, in Alzheimer’s disease, a specific protein called Amyloid-β go rogue and kill brain cells. Certain proteins produced by viruses <a href="https://www.biorxiv.org/content/10.1101/2024.05.16.594465v1">such as COVID</a> and <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/advs.202001299">bad gut bacteria</a> have the potential to support Amyloid-β in its toxic form. In laboratory conditions, these proteins have been shown to <a href="https://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1003537">accelerate the onset</a> of dementia. <h2>What does this all mean?</h2> With an ageing population, the burden of dementia is only likely to become greater in the years to come. There’s a lot more we have to learn about the causes of the disease and what we can potentially do to prevent and treat it. This new study has some limitations. For example, time without a diagnosis doesn’t necessarily mean time without disease. Some people may have underlying disease with delayed diagnosis. This research indicates Shingrix could have a silent benefit, but it’s too early to suggest we can use antiviral vaccines to prevent dementia. Overall, we need more research exploring in greater detail how infections are linked with dementia. This will help us understand the root causes of dementia and design potential therapies.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/235597/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/ibrahim-javed-1552271">Ibrahim Javed</a>, Enterprise and NHMRC Emerging Leadership Fellow, UniSA Clinical & Health Sciences, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/could-the-shingles-vaccine-lower-your-risk-of-dementia-235597">original article</a>.

Mind

What’s the difference between ‘strep throat’ and a sore throat? We’re developing a vaccine for one of them

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/kim-davis-1535254">Kim Davis</a>, <a href="https://theconversation.com/institutions/murdoch-childrens-research-institute-1027">Murdoch Children's Research Institute</a>; <a href="https://theconversation.com/profiles/alma-fulurija-1535255">Alma Fulurija</a>, <a href="https://theconversation.com/institutions/telethon-kids-institute-1608">Telethon Kids Institute</a>, and <a href="https://theconversation.com/profiles/myra-hardy-1535253">Myra Hardy</a>, <a href="https://theconversation.com/institutions/murdoch-childrens-research-institute-1027">Murdoch Children's Research Institute</a> the time of the year for coughs, colds and sore throats. So you might have heard people talk about having a “strep throat”. But what is that? Is it just a bad sore throat that goes away by itself in a day or two? Should you be worried? Here’s what we know about the similarities and differences between strep throat and a sore throat, and why they matter. <h2>How are they similar?</h2> It’s difficult to tell the difference between a sore throat and strep throat as they look and feel similar. People usually have a fever, a bright red throat and sometimes painful lumps in the neck (swollen lymph nodes). A throat swab can help diagnose strep throat, but the results can take a few days. Thankfully, both types of sore throat usually get better <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8655103/">by themselves</a>. <h2>How are they different?</h2> Most sore throats are caused by viruses such as common cold viruses, the flu (influenza virus), or the virus that causes glandular fever (Epstein-Barr virus). These viral sore throats can occur at any age. Antibiotics don’t work against viruses so if you have a viral sore throat, you won’t get better faster if you take antibiotics. You might even have some unwanted <a href="https://www.ncbi.nlm.nih.gov/books/NBK401243/#:%7E:text=People%20may%20then%20wonder%20whether,infection%2C%20such%20as%20bacterial%20tonsillitis.">antibiotic side-effects</a>. But strep throat is caused by Streptococcus pyogenes bacteria, also known as strep A. Strep throat is most common in <a href="https://www.tandfonline.com/doi/full/10.2217/fmb-2021-0077">school-aged children</a>, but can affect other age groups. In some cases, you may need antibiotics to avoid some rare but serious complications. In fact, the potential for complications is one key difference between a viral sore throat and strep throat. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/605956/original/file-20240710-19-irooun.png?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/605956/original/file-20240710-19-irooun.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/605956/original/file-20240710-19-irooun.png?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=405&fit=crop&dpr=1 600w, https://images.theconversation.com/files/605956/original/file-20240710-19-irooun.png?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=405&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/605956/original/file-20240710-19-irooun.png?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=405&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/605956/original/file-20240710-19-irooun.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=508&fit=crop&dpr=1 754w, https://images.theconversation.com/files/605956/original/file-20240710-19-irooun.png?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=508&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/605956/original/file-20240710-19-irooun.png?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=508&fit=crop&dpr=3 2262w" alt="" /></a><figcaption></figcaption></figure> Generally, a viral sore throat is <a href="https://www.bmj.com/content/347/bmj.f6867">very unlikely</a> to cause complications (one exception is those caused by Epstein-Barr virus which has been associated with illnesses such as <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3893202/">chronic fatigue syndrome</a>, <a href="https://www.science.org/doi/10.1126/science.abj8222">multiple sclerosis</a> and certain <a href="https://www.thelancet.com/journals/eclinm/article/PIIS2589-5370(22)00404-7/fulltext">cancers</a>). But strep A can cause invasive disease, a rare but serious complication. This is when bacteria living somewhere on the body (usually the skin or throat) get into another part of the body where there shouldn’t be bacteria, such as the bloodstream. This can make people extremely sick. Invasive strep A infections and deaths have been <a href="https://www.who.int/emergencies/disease-outbreak-news/item/2022-DON429">rising in recent years</a> <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10786649/">around the world</a>, especially in young children and older adults. This may be due to a number of factors such as increased social mixing at this stage of the COVID pandemic and an increase in circulating common cold viruses. But overall the reasons behind the increase in invasive strep A infections are not clear. Another rare but serious side effect of strep A is autoimmune disease. This is when the body’s immune system makes antibodies that react against its own cells. The most common example is <a href="https://www.who.int/news-room/fact-sheets/detail/rheumatic-heart-disease">rheumatic heart disease</a>. This is when the body’s immune system damages the heart valves a few weeks or months after a strep throat or skin infection. <a href="https://www.nejm.org/doi/10.1056/NEJMoa2102074?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%20%200pubmed">Around the world</a> more than 40 million people live with rheumatic heart disease and more than 300,000 die from its complications every year, mostly in developing countries. However, parts of Australia have some of the <a href="https://onlinelibrary.wiley.com/doi/full/10.5694/mja2.50682">highest rates</a> of rheumatic heart disease in the world. <a href="https://www.aihw.gov.au/reports/heart-stroke-vascular-diseases/hsvd-facts/contents/all-heart-stroke-and-vascular-disease/arf-and-rhd">More than 5,300</a> Indigenous Australians live with it. <h2>Why do some people get sicker than others?</h2> We know strep A infections and rheumatic heart disease <a href="https://link.springer.com/chapter/10.1007/82_2012_280">are more common</a> in low socioeconomic communities where poverty and overcrowding lead to increased strep A transmission and disease. However, we don’t fully understand why some people only get a mild infection with strep throat while others get very sick with invasive disease. We also don’t understand why some people get rheumatic heart disease after strep A infections when most others don’t. Our research team is trying to find out. <h2>How about a vaccine for strep A?</h2> There is no strep A vaccine but <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6028081/">many</a> <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8545125/">groups</a> in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6495378/">Australia</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7902606/">New Zealand</a> <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3620221/">and</a> <a href="https://www.clinicalkey.com.au/#!/content/playContent/1-s2.0-S0264410X19316457?returnurl=https:%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0264410X19316457%3Fshowall%3Dtrue&referrer=https:%2F%2Fpubmed.ncbi.nlm.nih.gov%2F">worldwide</a> are working towards one. For instance, Murdoch Children’s Research Institute and Telethon Kids Institute have formed the <a href="https://www.asavi.org.au">Australian Strep A Vaccine Initiative</a> to develop strep A vaccines. There’s also a <a href="https://savac.ivi.int/">global consortium</a> working towards the same goal. Companies such as <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10747066/">Vaxcyte</a> and <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7696035/">GlaxoSmithKline</a> have also been developing strep A vaccines. <h2>What if I have a sore throat?</h2> Most sore throats will get better by themselves. But if yours doesn’t get better in a few days or you have ongoing fever, see your GP. Your GP can examine you, consider running some tests and help you decide if you need antibiotics.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/230292/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/kim-davis-1535254">Kim Davis</a>, General paediatrician and paediatric infectious diseases specialist, <a href="https://theconversation.com/institutions/murdoch-childrens-research-institute-1027">Murdoch Children's Research Institute</a>; <a href="https://theconversation.com/profiles/alma-fulurija-1535255">Alma Fulurija</a>, Immunologist and the Australian Strep A Vaccine Initiative project lead, <a href="https://theconversation.com/institutions/telethon-kids-institute-1608">Telethon Kids Institute</a>, and <a href="https://theconversation.com/profiles/myra-hardy-1535253">Myra Hardy</a>, Postdoctoral Researcher, Infection, Immunity and Global Health, <a href="https://theconversation.com/institutions/murdoch-childrens-research-institute-1027">Murdoch Children's Research Institute</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/whats-the-difference-between-strep-throat-and-a-sore-throat-were-developing-a-vaccine-for-one-of-them-230292">original article</a>. </div>

Body

Are you up to date with your COVID, flu and other shots? It might depend on who your GP is

<a href="https://theconversation.com/profiles/peter-breadon-1348098">Peter Breadon</a>, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a> and <a href="https://theconversation.com/profiles/anika-stobart-1014358">Anika Stobart</a>, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a> Too many older Australians are <a href="https://grattan.edu.au/wp-content/uploads/2023/11/A-fair-shot-How-to-close-the-vaccination-gap-Grattan-Institute-Report.pdf">missing out</a> on recommended vaccinations for COVID, flu, shingles and pneumococcal that can protect them from serious illness, hospitalisation and even death. A new <a href="https://grattan.edu.au/">Grattan Institute report</a> shows vaccination rates vary widely from GP to GP, highlighting an important place to look for opportunities to boost vaccination. Many people get vaccinated at pharmacies, and those vaccinations are counted in our analysis. But we looked at GPs because they have a unique role overseeing someone’s health care, and an important role promoting vaccination. We found that for some GPs, nine in ten of their older patients were vaccinated for flu. For others, the rate was only four in ten. The differences for shingles and COVID were even bigger. For pneumococcal disease, there was a 13-fold difference in GPs’ patient vaccination rates. While some variation is inevitable, these differences are large, and they result in too many people missing out on recommended vaccines. <h2>Some GPs treat more complex patients</h2> A lot of these differences reflect the fact that GPs see different types of patients. Our research shows older people who aren’t proficient in English are up to 15% less likely to be vaccinated, even after other factors are taken into account. And the problem seems to be getting worse. COVID vaccination rates for people 75 years and older fell to just 36% in May 2024. But rates were even lower – a mere 11% – for people who don’t speak English proficiently, and 15% for those who speak a language other than English at home. Given these results, it’s no surprise that GPs with fewer patients who are vaccinated also have more patients who struggle with English. For GPs with the lowest vaccination rates, one-quarter of their patients aren’t proficient in English. For GPs with the highest vaccination rates, it is only 1%. GPs with fewer vaccinated patients also saw more people who live in rural areas, are poorer, didn’t go to university, and don’t have regular access to a GP, all of which reduce the likelihood of getting vaccinated. Many of these barriers to vaccination are difficult for GPs to overcome. They point to structural problems in our health system, and indeed our society, that go well beyond vaccination. But GPs are also a key part of the puzzle. A <a href="https://www.ijidonline.com/article/S1201-9712(14)01379-4/fulltext">strong</a> <a href="https://www.tandfonline.com/doi/full/10.1080/21645515.2020.1780848">recommendation</a> from a GP can make a big difference to whether a patient gets vaccinated. <a href="https://www.aihw.gov.au/reports/primary-health-care/general-practice-allied-health-primary-care">Nearly all</a> older Australians visit a GP every year. And some GPs have room for improvement. <h2>But GPs seeing similar patients can have very different vaccination rates</h2> We compared GPs whose patients had a similar likelihood of being vaccinated, based on a range of factors including their health, wealth and cultural background. Among the GPs whose patients were least likely to get a flu vaccination, some saw less than 40% of their patients vaccinated, while for others in that group, the rate was over 70%. Among GPs with patients who face few barriers to vaccination, the share of their patients who were vaccinated also varied widely. Even within neighbourhoods, GP patient vaccination rates vary a lot. For example, in Bankstown in Sydney, there was a seven-fold difference in COVID vaccination rates and an 18-fold difference for pneumococcal vaccination. Not everything about clinics and patients can be measured in data, and there will be good reasons for some of these differences. But the results do suggest that some GPs are beating the odds to overcome patient barriers to getting vaccinated, while other GPs could be doing more. That should trigger focused efforts to raise vaccination rates where they are low. <h2>So what should governments do?</h2> A comprehensive national reform agenda is <a href="https://grattan.edu.au/wp-content/uploads/2023/11/A-fair-shot-How-to-close-the-vaccination-gap-Grattan-Institute-Report.pdf">needed to increase adult vaccination</a>. That includes clearer guidance, national advertising campaigns, SMS reminders, and tailored local programs that reach out to communities with very low levels of vaccination. But based on the big differences in GPs’ patient vaccination rates, Australia also needs a three-pronged plan to help GPs lift older Australians’ vaccination rates. First, the way general practice is funded needs to be overhauled, providing more money for the GPs whose patients face higher barriers to vaccination. Today, clinics with patients who are poorer, sicker and who struggle with English tend to get less funding. They should get more, so they can spend more time with patients to explain and promote vaccination. Second, GPs need to be given data, so that they can easily see how their vaccination rates compare to GPs with similar patients. And third, Primary Health Networks – which are responsible for improving primary care in their area – should give clinics with low vaccination rates the help they need. That might include running vaccination sessions, sharing information about best practices that work in similar clinics with higher vaccination rates, or offering translation support. And because pharmacies also play an important role in promoting and providing vaccines, governments should give them data too, showing how their rates compare to other pharmacies in their area, and support to boost vaccination uptake. These measures would go a long way to better protect some of the most vulnerable in our society. Governments have better data than ever before on who is missing out on vaccinations – and other types of health care. They shouldn’t miss the opportunity to target support so that no matter where you live, what your background is, or which GP or pharmacy you go to, you will have the best chance of being protected against disease.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/234175/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/peter-breadon-1348098">Peter Breadon</a>, Program Director, Health and Aged Care, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a> and <a href="https://theconversation.com/profiles/anika-stobart-1014358">Anika Stobart</a>, Senior Associate, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/are-you-up-to-date-with-your-covid-flu-and-other-shots-it-might-depend-on-who-your-gp-is-234175">original article</a>.

Body

COVID vaccines saved millions of lives – linking them to excess deaths is a mistake

<a href="https://theconversation.com/profiles/paul-hunter-991309">Paul Hunter</a>, <a href="https://theconversation.com/institutions/university-of-east-anglia-1268">University of East Anglia</a> A recent <a href="https://bmjpublichealth.bmj.com/content/2/1/e000282">study</a> has sparked another <a href="https://nypost.com/2024/06/06/us-news/covid-vaccines-may-have-helped-fuel-rise-in-excess-deaths-since-pandemic-study/">round of</a> <a href="https://www.telegraph.co.uk/news/2024/06/04/covid-vaccines-may-have-helped-fuel-rise-in-excess-deaths/">headlines</a> <a href="https://www.gbnews.com/health/covid-vaccine-side-effects-deaths">claiming</a> that COVID vaccines caused excess deaths. This was accompanied by a predictable outpouring of <a href="https://x.com/DrAseemMalhotra/status/1797922073798717524">I-told-you-sos</a> on social media. Excess deaths are a measure of how many more deaths are being recorded in a country over what would have been expected based on historical trends. In the UK, and in many other countries, death rates have been higher during the years 2020 to 2023 than would have been expected based on historic trends from before the pandemic. But that has been known for some time. A couple of years ago I wrote an article for <a href="https://theconversation.com/summer-2022-saw-thousands-of-excess-deaths-in-england-and-wales-heres-why-that-might-be-189351">The Conversation</a> pointing this out and suggesting some reasons. But has anything changed? The authors of the new study, published in BMJ Public Health, used publicly available data from <a href="https://ourworldindata.org/COVID-vaccinations">Our World in Data</a> to determine which countries had “statistically significant” excess deaths – in other words, excess deaths that couldn’t be explained by mere random variation. They studied the years 2020 to 2022 and found that many, but not all, countries did indeed report excess deaths. The authors did not try to explain why these excess deaths occurred, but the suggestion that COVID vaccines could have played a role is clear from their text – and indeed widely interpreted as such by certain newspapers. There is no doubt that a few deaths were associated with <a href="https://journals.sagepub.com/doi/full/10.1177/25166026211053485">the COVID vaccines</a>, but could the vaccination programme explain the large number of excess deaths – 3 million in 47 countries – that have been reported? Based on <a href="https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/articles/excessdeathsinenglandandwales/march2020todecember2021">death certificates</a>, during 2020 and 2021 there were more deaths from COVID than estimated excess deaths in the UK. So during the year 2021 when most vaccine doses were administered, there were actually fewer non-COVID deaths than would have been expected. It was only in 2022 that excess deaths <a href="https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/articles/deathregistrationsummarystatisticsenglandandwales/2022">exceeded COVID deaths</a>. If the vaccination campaign was contributing to the excess deaths that we have seen in recent years, then we should expect to see more deaths in people who have been vaccinated than in those who have not. The most reliable analysis in this regard was done by the UK’s <a href="https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/articles/excessdeathsinenglandandwales/march2020todecember2021">Office for National Statistics (ONS)</a>. In this analysis, the ONS matched death registrations with the vaccine histories of each death recorded. They then calculated “age-standardised death rates” to account for age differences between those vaccinated and those not. What the ONS found was that in all months from April 2021 to May 2023, the death rate <a href="https://www.ons.gov.uk/redir/eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpbmRleCI6MSwicGFnZVNpemUiOjEwLCJwYWdlIjoxLCJ1cmkiOiIvcGVvcGxlcG9wdWxhdGlvbmFuZGNvbW11bml0eS9iaXJ0aHNkZWF0aHNhbmRtYXJyaWFnZXMvZGVhdGhzL2RhdGFzZXRzL2V4Y2Vzc2RlYXRoc2luZW5nbGFuZGFuZHdhbGVzIiwibGlzdFR5cGUiOiJyZWxhdGVkZGF0YSJ9.Cot-XDe8Rr07paGllBNnVVz1nTqnXfVafn2woA3tk0c">from all causes was higher</a> in the unvaccinated than in people who had been vaccinated at least once. That deaths from all causes were lower in the vaccinated than the unvaccinated should come as no surprise given that COVID was a major cause of death in 2021 and 2022. And there is ample evidence of the <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10492612/">protective effect of vaccines</a> against severe COVID and death. But what is even more convincing is that, even when known COVID deaths were excluded in the ONS report, the death rate in the unvaccinated was still higher, albeit not by very much in more recent months. Some COVID deaths would certainly not have been recognised as such. But, on the other hand, people with chronic conditions, such as diabetes, were a high priority for vaccination. And these people would have been at increased risk of death even before the pandemic. <h2>Possible causes</h2> If the vaccine is not the cause of the excess deaths, what was? The major cause of the excess deaths reported in the first two years of the BMJ Public Health study was deaths from COVID. But by 2022, excess deaths exceeded COVID deaths in many countries. Possible <a href="https://theconversation.com/summer-2022-saw-thousands-of-excess-deaths-in-england-and-wales-heres-why-that-might-be-189351">explanations</a> for these excess deaths include longer-term effects of earlier COVID infections, the return of infections such as influenza that had been suppressed during the COVID control measures, adverse effects of lockdowns on physical and mental health, and delays in the diagnosis of life-threatening infections as health services struggled to cope with the pandemic and its aftermath. We do need to look very carefully at how the pandemic was managed. There is still considerable debate about the effectiveness of different behavioural control measures, such as self-isolation and lockdowns. Even when such interventions were effective at reducing transmission of COVID, what were the harms and were the gains worth the harms? Nevertheless, we can be confident that the excess deaths seen in recent years were not a consequence of the vaccination campaign.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/231776/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/paul-hunter-991309">Paul Hunter</a>, Professor of Medicine, <a href="https://theconversation.com/institutions/university-of-east-anglia-1268">University of East Anglia</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/covid-vaccines-saved-millions-of-lives-linking-them-to-excess-deaths-is-a-mistake-231776">original article</a>.

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The growing promise of cancer vaccines

<div class="copy"> A cure for cancer — which is <a href="https://ourworldindata.org/grapher/burden-of-disease-by-cause" target="_blank" rel="noopener">second only to cardiovascular diseases</a> in its contribution to the global burden of disease — has long been a dream. While no magic bullet is yet in sight, three vaccines for particular skin and lung cancer types have advanced to the last stage of clinical trials in recent months. If successful, these vaccines should be available to patients in the next three to 11 years. Unlike vaccines which prevent diseases, these aim to cure them or prevent relapses. Cancer in every person is different because the cells in every cancerous tumour have different sets of genetic mutations. Recognising this, two of the vaccines are personalised and tailor-made for each patient. Oncologists working with pharmaceutical companies have developed these individualised neoantigen therapies. A vaccine typically works by training the immune cells of our body to recognise antigens – proteins from pathogens, such as viruses – against future attacks by the pathogen. In cancer, however, there is no external pathogen. The cells of a cancerous tumour undergo continuous mutations, some of which help them to grow much faster than normal cells while some others help them evade the body’s natural immune system. The mutated proteins in cancerous cells are called ‘neoantigens’. In individualised neoantigen therapy, the gene sequence of the tumour and normal blood cells are compared to identify neoantigens from each patient, and then a subset of neoantigens are chosen that are most likely to induce an immune response. The vaccine for an individual patient targets this chosen subset of neoantigens. These vaccines, jointly developed by pharma giants Moderna and Merck, have been shown in trials conducted so far to be significantly more effective in combination with immunotherapy than immunotherapy alone in preventing both the relapse of melanoma — a type of skin cancer — and non-small cell lung cancer after the tumours had been surgically removed. Following these promising results in phase II clinical trials, the vaccines are now being tested on a larger group of patients in phase III trials. The studies are expected to be complete by 2030 for <a href="https://clinicaltrials.gov/study/NCT05933577" target="_blank" rel="noopener">melanoma</a> and 2035 for <a href="https://www.clinicaltrials.gov/study/NCT06077760?intr=mRNA-4157&rank=3" target="_blank" rel="noopener">lung cancer</a>. The Moderna-Merck cancer vaccine may not be the first to reach the market. The French company OSE Immunotherapeutics <a href="https://www.clinicaltrialsarena.com/news/ose-shares-pipeline-updates-with-plans-phase-iii-trial-for-tedopi/" target="_blank" rel="noopener">published positive results</a> last September from phase III clinical trials of a vaccine using a different approach for advanced non-small cell lung cancer. Its vaccine, Tedopi, is scheduled to start <a href="https://finance.yahoo.com/news/ose-immunotherapeutics-receives-8-4-160000694.html?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbS8&guce_referrer_sig=AQAAADAX7Kqu7RTAEowvwOw2f-2cJ7SJ4uLpvjH-3tXzGtifqidaZfPs4eHLz23UqqjHDPjbVE1Vwel5qIKzKbmWvPLfLQzzH_PvKJAMsqTHuz8p5nPoR39RbIToLShEUG53eOeDFg6pWlRc2JPqrX7sGnc3ByO9FFfqXQYpZ4FZ-jgr" target="_blank" rel="noopener">confirmatory trials</a> – which are the last step before regulatory approval – later this year and may be available by 2027. Vaccines for pancreatic cancer being developed by BioNTech and Genentech, and for colon cancer by Gritstone, are also showing promising results in the early phases of clinical trials. Like the vaccines being developed by Moderna and Merck, these too are individualised neoantigen therapies based on messenger RNA (mRNA). There is another kind of RNA therapy also under development that uses small interfering RNA (siRNA) and microRNA (miRNA). Since 2018, six siRNA-based therapies have been approved by the US Food and Drug Administration for the treatment of neural, skin, heart and renal diseases. Several more siRNA drugs are at various clinical trial stages for different types of cancer and a diverse range of other diseases. Within cells, there are two kinds of nucleic acid molecules that contain coded information vital to life: DNA and RNA. While DNA contains genetic information, mRNA — one among the different types of RNA — carries the codes for the proteins. In addition, there are also non-coding RNA, some of which are functionally important. siRNA and miRNA are examples of such non-coding RNA. The RNA vaccine for an individualised neoantigen therapy is a cocktail of mRNA carrying the codes for neoantigens — the mutated fingerprint proteins in cancerous cells. For the <a href="https://www.nature.com/articles/d41591-023-00072-0" target="_blank" rel="noopener">Moderna-Merck study</a>, scientists identified 34 neoantigens per patient. They delivered the corresponding mRNA vaccine cocktail packed in lipid nanoparticles, just like the mRNA vaccines for COVID-19 developed by Moderna and Pfizer-BioNTech. When the vaccine is delivered after removing the tumour, it trains the immune system to recognise neoantigens and fight back against the cancer returning. Usually, the body’s natural immune system corrects mutations and prevents us from having cancers. However, in some cases this natural immune response is insufficient, leading to tumour growth. In individualised neoantigen therapy, these mutations in the tumour cells are used for vaccine development and for training the immune system to fight back against relapse after removal of the tumour. Recent advances in artificial intelligence are helping identify potential neoantigens and manage personalised therapies. Firstly, gene sequencing of tumours and normal blood cells of a patient and their comparison produces a huge amount of data. AI is used to find the genetic mutations of the patient’s cancer in such ‘big data’. Moreover, individualised therapy requires timely production and delivery of vaccines that are different for each patient. AI is also useful in the management of such data. The individualised nature of the treatment is probably why it has been <a href="https://www.nature.com/articles/d41591-023-00072-0" target="_blank" rel="noopener">more effective in trials</a> than previous, unsuccessful RNA vaccine candidates. However, this personalisation is also likely to raise challenges for the timely and cost-effective delivery of treatment to populations around the world. The siRNA and miRNA treatments work in a way opposite to mRNA. While each mRNA in a vaccine carries the code for producing a protein from a pathogen (antigen) or tumour (neoantigen) to train our immune systems against future attacks by the pathogen or tumour, siRNA directly targets the mRNA of the antigen or neoantigen and terminates the production of the protein it codes. Thus, the effect of a siRNA is more direct and immediate (like a drug), rather than a protection against future attacks (like a vaccine). Discovered at the turn of this millennium, siRNA-based therapeutics attracted immediate attention, but their initial success was limited due to their inherent low stability, difficulties in delivering them to desired locations, and rapid clearance from the bloodstream. However, in recent years, siRNA therapies have been boosted through chemical modifications that have increased their stability and ability to be delivered to specific locations such as tumours, and improved delivery systems such as lipid nanoparticle encasings. These improvements led to recent successes in FDA approvals of siRNA-based therapies and further <a href="https://www.rockefeller.edu/news/35461-a-new-way-to-target-the-culprit-behind-a-deadly-liver-cancer/" target="_blank" rel="noopener">promising reports of advances</a> in the treatment of diseases including a type of liver cancer. Research scientist Dr Bidyut Sarkar is the DBT-Wellcome Trust India Alliance Intermediate Fellow in the Department of Chemistry at Shiv Nadar Institute of Eminence, Delhi NCR, India. Originally published under <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank" rel="noopener">Creative Commons</a> by <a href="https://360info.org/" target="_blank" rel="noopener">360info</a>™. Image credits: Shutterstock <div> </div> <img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=304875&title=The+growing+promise+of+cancer+vaccines" width="1" height="1" loading="lazy" aria-label="Syndication Tracker" data-spai-target="src" data-spai-orig="" data-spai-exclude="nocdn" /></div> <div id="contributors"> <a href="https://cosmosmagazine.com/the-body/the-growing-promise-of-cancer-vaccines/">This article</a> was originally published on <a href="https://cosmosmagazine.com">Cosmos Magazine</a> and was written by <a href="https://cosmosmagazine.com/contributor/360info-2/">360info</a>. Originally published under Creative Commons by 360info™. </div>

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AstraZeneca admits to Covid vaccine's deadly side effect

AstraZeneca has admitted that their Covid vaccine carries a very rare but deadly side effect, as "dozens" of class-action lawsuits pile up. The UK pharmaceutical giant could be facing damages of up to $38 million, as lawyers representing complainants whose loved ones who were injured or killed from the jab called the vaccine "defective". Those who received the AstraZeneca Covid-19 vaccine could be susceptible to a rare and potentially blood clotting disorder called thrombosis with thrombocytopenia syndrome, or TTS, in which patients suffer from blood clots as well as a low blood platelet count. While the side effect is rare, recent research from RMIT University and Monash University found Australia’s Covid-19 vaccination rollout likely prevented the death of 17,760 people aged over 50 in New South Wales between August 2021 and July 2022, with some researchers suggesting that AstraZeneca alone helped saved as many as six million lives worldwide, according to the <a title="nypost.com" href="https://nypost.com/2024/04/29/world-news/astrazeneca-cops-to-rare-deadly-side-effect-of-covid-jab-as-lawsuits-mount/">New York Post.</a> AstraZeneca, which is contesting the claims, acknowledged in a February legal document that its vaccine can “in very rare cases,” cause the clotting condition, while also acknowledging that the potential complication was listed as a side effect of the vaccine since its release. So far, 51 cases have been filed in London’s High Court, estimated to be worth around $190 million (GBP100 million) total, according to the UK newspaper<a title="www.telegraph.co.uk" href="https://www.telegraph.co.uk/news/2024/04/28/astrazeneca-admits-covid-vaccine-causes-rare-side-effect/"> The Telegraph</a>. However, thanks to a deal struck between AstraZeneca and the UK government during the worst of the pandemic, the drugmaker has been pre-emptively indemnified against future lawsuits – which means any successful claims for payouts will be born by taxpayers. One of the claimants is father-of-two Jamie Scott, who was left with a permanent brain injury after suffering a clot following receiving the vaccine in April 2021. His wife, Kate, told <a title="www.telegraph.co.uk" href="https://www.telegraph.co.uk/news/2024/04/28/astrazeneca-admits-covid-vaccine-causes-rare-side-effect/">The Telegraph </a>she’s hopeful the company’s admission will accelerate the outcome of their case. “We need an apology, fair compensation for our family and other families who have been affected. We have the truth on our side, and we are not going to give up.” Image credits: Getty Images

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There are new flu vaccines on offer for 2024. Should I get one? What do I need to know?

<a href="https://theconversation.com/profiles/allen-cheng-94997">Allen Cheng</a>, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a> Influenza is a common respiratory infection. Although most cases are relatively mild, flu can cause more severe illness in young children and older people. Influenza virtually <a href="https://pubmed.ncbi.nlm.nih.gov/33243355/">disappeared</a> from Australia during the first years of the COVID-19 pandemic when public health restrictions reduced contact between people. Since 2022, it has returned to a seasonal pattern, although the flu season has started and peaked a few months earlier than before 2020. It’s difficult to predict the intensity of the flu season at this point in the year, but we can sometimes get clues from the northern hemisphere. There, the season <a href="https://www.who.int/tools/flunet">started</a> <a href="https://gis.cdc.gov/grasp/fluview/flu_by_age_virus.html">earlier</a> than usual for the third year running (peaking in early January rather than late February/March), with a similar number of reported cases and hospitalisations to the previous year. Influenza vaccines are recommended annually, but there are now an increasing number of different vaccine types. Here’s what to know about this year’s shots, available from <a href="https://www.health.gov.au/topics/immunisation/vaccines/influenza-flu-vaccine">this month</a>. <h2>What goes into a flu vaccine?</h2> Like other vaccines, influenza vaccines work by “training” the immune system on a harmless component of the influenza virus (known as an antigen), so it can respond appropriately when the body encounters the real virus. Influenza strains are constantly changing due to genetic mutation, with the pace of genetic change <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421855">much higher</a> than for SARS-CoV-2 (the virus that causes COVID). The strains that go into the vaccine are <a href="https://www.who.int/teams/global-influenza-programme/vaccines/who-recommendations">reviewed</a> twice each year by the World Health Organization (WHO), which selects vaccine strains to match the next season’s predicted circulating strains. All current influenza vaccines in <a href="https://www.tga.gov.au/resources/publication/meeting-statements/aivc-recommendations-composition-influenza-vaccines-australia-2024">Australia</a> contain four different strains (known as quadrivalent vaccines). One of the strains appeared to <a href="https://www.nejm.org/doi/full/10.1056/NEJMp2314801">disappear</a> during the COVID pandemic, and the WHO has recently <a href="https://cdn.who.int/media/docs/default-source/influenza/who-influenza-recommendations/vcm-southern-hemisphere-recommendation-2024/202309_qanda_recommendation.pdf?sfvrsn=7a6906d1_5">recommended</a> dropping this strain from the vaccine. It’s expected trivalent (three strain) vaccines will become available in the near future. <h2>What’s different about new flu vaccines?</h2> There are eight brands of flu vaccines <a href="https://www.health.gov.au/resources/publications/atagi-statement-on-the-administration-of-seasonal-influenza-vaccines-in-2024?language=en">available</a> in Australia in 2024. These include egg-based vaccines (Vaxigrip Tetra, Fluarix Tetra, Afluria Quad, FluQuadri and Influvac Tetra), cell-based vaccines (Flucelvax Quad), adjuvanted vaccines (Fluad Quad) and high-dose vaccines (Fluzone High-Dose Quad). Until recently, the process of manufacturing flu vaccines has remained similar. Since the development of the influenza vaccine in the <a href="https://www.who.int/news-room/spotlight/history-of-vaccination/history-of-influenza-vaccination">1940s</a>, influenza viruses were grown in chicken eggs, then extracted, inactivated, purified and processed to make up the egg-based vaccines that are still used widely. However, there have been several enhancements to influenza vaccines in recent years. Older people’s immune systems tend not to respond as strongly to vaccines. In some flu vaccines, adjuvants (components that stimulate the immune system) are included with the influenza antigens. For example, an adjuvant is used in the Fluad Quad vaccine, recommended for over 65s. Studies <a href="https://ncirs.org.au/sites/default/files/2021-02/Adjuvanted%20influenza%20vaccine%20vs%20standard%20dose%20influenza%20vaccine%20SoF%20EP%20E2D%20tables_26%20Feb%202021_Final.pdf">suggest</a> adjuvanted influenza vaccines are slightly better than standard egg-based vaccines without adjuvant in older people. An alternative approach to improving the immune response is to use higher doses of the vaccine strains. An example is Fluzone High-Dose Quad – another option for older adults – which contains the equivalent of four doses of a standard influenza vaccine. Studies <a href="https://ncirs.org.au/sites/default/files/2022-05/HD%20vs%20sIV%20SoF%20EP%20E2D_March%202022_Final.pdf">suggest</a> the high dose vaccine is better than the standard dose vaccine (without an adjuvant) in preventing hospitalisation and complications in older people. Other manufacturers have updated the manufacturing process. Cell-based vaccines, such as Flucelvax Quad, use cells instead of eggs in the manufacturing process. Other vaccines that are <a href="https://www.cdc.gov/flu/prevent/advances.htm">not yet available</a> also use different technologies. In the past, <a href="https://pubmed.ncbi.nlm.nih.gov/31151913/">manufacturing issues</a> with egg-based vaccines have reduced their effectiveness. Using an alternative method of production provides some degree of insurance against this in the future. <h2>What should I do this year?</h2> Given indications this year’s flu season may be earlier than usual, it’s probably safest to get your vaccine early. This is particularly <a href="https://www.health.gov.au/resources/publications/atagi-statement-on-the-administration-of-seasonal-influenza-vaccines-in-2024?language=en">important</a> for those at highest risk of severe illness, including older adults (65 years and over), those with chronic medical conditions, young children (six months to five years) and Aboriginal and Torres Strait Islander people. Influenza vaccines are also recommended in pregnancy to protect both the mother and the baby for the first months of life. Influenza vaccines are widely available, including at GP clinics and pharmacies, while many workplaces have occupational programs. For high-risk groups, <a href="https://www.health.gov.au/topics/immunisation/vaccines/influenza-flu-vaccine">four of the vaccines</a> are subsidised by the Australian government through the <a href="https://www.health.gov.au/our-work/national-immunisation-program">National Immunisation Program</a>. In older people, a number of vaccines are now recommended: <a href="https://www.health.gov.au/sites/default/files/2024-03/atagi-statement-on-the-administration-of-covid-19-vaccines-in-2024.pdf">COVID</a> and influenza, as well as one-off courses of <a href="https://www.health.gov.au/sites/default/files/documents/2020/06/national-immunisation-program-pneumococcal-vaccination-schedule-from-1-july-2020-clinical-advice-for-vaccination-providers.pdf">pneumococcal</a> and <a href="https://www.health.gov.au/topics/immunisation/vaccines/shingles-herpes-zoster-immunisation-service">shingles</a> vaccines. In general, most vaccines can be given in the same visit, but talk to your doctor about which ones you need. <h2>Are there side effects?</h2> All influenza vaccines can <a href="https://www.health.gov.au/topics/immunisation/vaccines/influenza-flu-vaccine">cause</a> a sore arm and sometimes more generalised symptoms such as fever and tiredness. These are expected and reflect the immune system reacting appropriately to the vaccine, and are mostly mild and short-term. These side effects are slightly more common in <a href="https://ncirs.org.au/sites/default/files/2021-02/Adjuvanted%20influenza%20vaccine%20vs%20standard%20dose%20influenza%20vaccine%20SoF%20EP%20E2D%20tables_26%20Feb%202021_Final.pdf">adjuvanted</a> and <a href="https://ncirs.org.au/sites/default/files/2022-05/HD%20vs%20sIV%20SoF%20EP%20E2D_March%202022_Final.pdf">high dose</a> vaccines. As with all medications and vaccines, allergic reactions such as anaphylaxis can occur after the flu vaccine. All vaccine providers are trained to recognise and respond to anaphylaxis. People with egg allergies should discuss this with their doctor, but in general, <a href="https://www.allergy.org.au/patients/food-allergy/egg-allergy-flu-vaccine">studies suggest</a> they can safely receive any (including egg-based) influenza vaccines. Serious side effects from the influenza vaccine, such as Guillain-Barré syndrome, a neurological complication, are very rare (one case per million people vaccinated). They are <a href="https://pubmed.ncbi.nlm.nih.gov/23810252/">thought</a> to be less common after influenza vaccination than after infection with influenza.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/226623/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/allen-cheng-94997">Allen Cheng</a>, Professor of Infectious Diseases, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/there-are-new-flu-vaccines-on-offer-for-2024-should-i-get-one-what-do-i-need-to-know-226623">original article</a>.

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What are the new COVID booster vaccines? Can I get one? Do they work? Are they safe?

<a href="https://theconversation.com/profiles/paul-griffin-1129798">Paul Griffin</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> As the COVID virus continues to <a href="https://pubmed.ncbi.nlm.nih.gov/36680207/">evolve</a>, so does our vaccine response. From <a href="https://www.health.gov.au/ministers/the-hon-mark-butler-mp/media/new-covid-19-vaccines-available-to-target-current-variants?language=en">December 11</a>, Australians will have access to <a href="https://www.health.gov.au/news/atagi-recommendations-on-use-of-the-moderna-and-pfizer-monovalent-omicron-xbb15-covid-19-vaccines?language=en">new vaccines</a> that offer better protection. These “monovalent” booster vaccines are expected to be a <a href="https://theconversation.com/cdc-greenlights-two-updated-covid-19-vaccines-but-how-will-they-fare-against-the-latest-variants-5-questions-answered-213341">better match</a> for currently circulating strains of SARS-CoV-2, the virus that causes COVID. Pfizer’s monovalent vaccine will be <a href="https://www.health.gov.au/ministers/the-hon-mark-butler-mp/media/new-covid-19-vaccines-available-to-target-current-variants?language=en">available</a> to eligible people aged five years and older. The Moderna monovalent vaccine can be used for those aged 12 years and older. Who is eligible for these new boosters? How do they differ from earlier ones? Do they work? Are they safe? <h2>Who’s eligible for the new boosters?</h2> The federal government has accepted the Australian Technical Advisory Group (ATAGI) recommendation to use the new vaccines, after Australia’s regulator <a href="https://www.tga.gov.au/products/covid-19/covid-19-vaccines/covid-19-vaccines-regulatory-status">approved their use last month</a>. However, vaccine eligibility has remained the same since September. ATAGI <a href="https://www.health.gov.au/news/atagi-recommendations-on-use-of-the-moderna-and-pfizer-monovalent-omicron-xbb15-covid-19-vaccines?language=en">recommends</a> Australians aged over 75 get vaccinated if it has been six months or more since their last dose. People aged 65 to 74 are recommended to have a 2023 booster if they haven’t already had one. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/560533/original/file-20231120-21-4igdnx.png?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/560533/original/file-20231120-21-4igdnx.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/560533/original/file-20231120-21-4igdnx.png?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=315&fit=crop&dpr=1 600w, https://images.theconversation.com/files/560533/original/file-20231120-21-4igdnx.png?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=315&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/560533/original/file-20231120-21-4igdnx.png?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=315&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/560533/original/file-20231120-21-4igdnx.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=396&fit=crop&dpr=1 754w, https://images.theconversation.com/files/560533/original/file-20231120-21-4igdnx.png?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=396&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/560533/original/file-20231120-21-4igdnx.png?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=396&fit=crop&dpr=3 2262w" alt="" /></a><figcaption>For people without risk factors. <a class="source" href="https://www.health.gov.au/sites/default/files/2023-10/atagi-recommended-covid-19-vaccine-doses.pdf">Health.gov.au</a></figcaption></figure> Adults aged 18 to 64 with underlying risk factors that increase their risk of severe COVID are also recommended to have a 2023 booster if they haven’t had one yet. And if they’ve already had a 2023 booster, they can consider an additional dose. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/560532/original/file-20231120-26-70jfyr.png?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/560532/original/file-20231120-26-70jfyr.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/560532/original/file-20231120-26-70jfyr.png?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=311&fit=crop&dpr=1 600w, https://images.theconversation.com/files/560532/original/file-20231120-26-70jfyr.png?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=311&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/560532/original/file-20231120-26-70jfyr.png?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=311&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/560532/original/file-20231120-26-70jfyr.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=391&fit=crop&dpr=1 754w, https://images.theconversation.com/files/560532/original/file-20231120-26-70jfyr.png?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=391&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/560532/original/file-20231120-26-70jfyr.png?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=391&fit=crop&dpr=3 2262w" alt="" /></a><figcaption>Advice for people with risk factors. <a class="source" href="https://www.health.gov.au/sites/default/files/2023-10/atagi-recommended-covid-19-vaccine-doses.pdf">Health.gov.au</a></figcaption></figure> For adults aged 18 to 64 without underlying risk factors who have already received a 2023 booster, an additional dose isn’t recommended. But if you’re aged 18 to 64 and haven’t had a booster in 2023, you can consider an additional dose. Additional doses aren’t recommended for children without underlying conditions that increase their risk of severe COVID. A primary course is not recommended for children aged six months to five years without additional risk factors. <h2>Monovalent, bivalent? What’s the difference?</h2> From monovalent The initial COVID vaccines were “monovalent”. They had one target – the original viral strain. But as the virus mutated, we assigned new letters of the Greek alphabet to each variant. This brings us to Omicron. With this significant change, we saw “immune evasion”. The virus had changed so much the original vaccines didn’t provide sufficient immunity. To bivalent So vaccines were updated to target an early Omicron subvariant, BA.1, plus the original ancestral strain. With two targets, these were the first of the “bivalent” vaccines, which were approved in Australia <a href="https://theconversation.com/omicron-specific-vaccines-may-give-slightly-better-covid-protection-but-getting-boosted-promptly-is-the-best-bet-190736">in 2022</a>. Omicron continued to evolve, leading to more “immune escape”, contributing to repeated waves of transmission. The vaccines were updated again in <a href="https://theconversation.com/havent-had-covid-or-a-vaccine-dose-in-the-past-six-months-consider-getting-a-booster-199096">early 2023</a>. These newer bivalent vaccines target two strains – the ancestral strain plus the subvariants BA.4 and BA.5. Back to monovalent Further changes in the virus have meant our boosters needed to be updated again. This takes us to the recent announcement. This time the booster targets another subvariant of Omicron known as XBB.1.5 (sometimes known as <a href="https://theconversation.com/the-kraken-subvariant-xbb-1-5-sounds-scary-but-behind-the-headlines-are-clues-to-where-covids-heading-198158">Kraken</a>). This vaccine is monovalent once more, meaning it has only one target. The target against the original viral strain has been removed. According to advice given to the World Health Organization <a href="https://www.who.int/news/item/18-05-2023-statement-on-the-antigen-composition-of-covid-19-vaccines">in May</a>, this is largely because immunity to this original strain is no longer required (it’s no longer infecting humans). Raising immunity to the original strain may also hamper the immune response to the newer component, but we’re not sure if this is occurring or how important this is. The United States <a href="https://theconversation.com/cdc-greenlights-two-updated-covid-19-vaccines-but-how-will-they-fare-against-the-latest-variants-5-questions-answered-213341">approved</a> XBB.1.5-specific vaccines from Pfizer and Moderna in <a href="https://www.fda.gov/news-events/press-announcements/fda-takes-action-updated-mrna-covid-19-vaccines-better-protect-against-currently-circulating">mid-September</a>. These updated vaccines have also been <a href="https://www.tga.gov.au/sites/default/files/2023-10/auspar-spikevax-xbb.1.5-231012.pdf">approved in</a> places including Europe, Canada, Japan and Singapore. In Australia, the Therapeutic Goods Administration (TGA) approved them <a href="https://www.tga.gov.au/products/covid-19/covid-19-vaccines/covid-19-vaccines-regulatory-status">in October</a>. <h2>Do these newer vaccines work?</h2> Evidence for the efficacy of these new monovalent vaccines comes from the results of research <a href="https://www.ebs.tga.gov.au/ebs/picmi/picmirepository.nsf/pdf?OpenAgent=&id=CP-2023-PI-02409-1&d=20231117172310101">Pfizer</a> and <a href="https://www.tga.gov.au/resources/auspar/auspar-spikevax-xbb15">Moderna</a> submitted to the TGA. Evidence also comes from a <a href="https://www.medrxiv.org/content/10.1101/2023.08.22.23293434v2">preprint</a> (preliminary research available online that has yet to be independently reviewed) and an update Pfizer <a href="https://www.cdc.gov/vaccines/acip/meetings/downloads/slides-2023-09-12/10-COVID-Modjarrad-508.pdf">presented</a> to the US Centers for Disease Control. Taken together, the available evidence shows the updated vaccines produce good levels of antibodies in <a href="https://www.tga.gov.au/resources/auspar/auspar-spikevax-xbb15">laboratory studies</a>, <a href="https://www.medrxiv.org/content/10.1101/2023.08.22.23293434v2">in humans</a> and <a href="https://www.tga.gov.au/resources/auspar/auspar-spikevax-xbb15">mice</a> when compared to previous vaccines and when looking at multiple emerging variants, including EG.5 (sometimes known as <a href="https://theconversation.com/the-who-has-declared-eris-a-variant-of-interest-how-is-it-different-from-other-omicron-variants-211276">Eris</a>). This variant is the one causing high numbers of cases around the world currently, including in Australia. It is very similar to the XBB version contained in the updated booster. The updated vaccines should also cover <a href="https://theconversation.com/how-evasive-and-transmissible-is-the-newest-omicron-offshoot-ba-2-86-that-causes-covid-19-4-questions-answered-212453">BA.2.86 or Pirola</a>, according to <a href="https://www.tga.gov.au/sites/default/files/2023-10/auspar-spikevax-xbb.1.5-231012.pdf">early results</a> from clinical trials and the US <a href="https://www.cdc.gov/respiratory-viruses/whats-new/covid-19-variant.html">Centers for Disease Control</a>. This variant is responsible for a rapidly increasing proportion of cases, with case numbers growing <a href="https://twitter.com/BigBadDenis/status/1725310295596560662?s=19">in Australia</a>. It’s clear the virus is going to continue to evolve. So performance of these vaccines against new variants will continue to be closely monitored. <h2>Are they safe?</h2> The <a href="https://www.ebs.tga.gov.au/ebs/picmi/picmirepository.nsf/pdf?OpenAgent=&id=CP-2023-PI-02409-1&d=20231117172310101">safety</a> of the updated vaccines has also been shown to be similar to previous versions. Studies <a href="https://www.medrxiv.org/content/10.1101/2023.08.22.23293434v2">comparing them</a> found no significant difference in terms of the adverse events reported. Given the availability of the updated vaccines, some countries have removed their approval for earlier versions. This is because newer versions are a closer match to currently circulating strains, rather than any safety issue with the older vaccines. <h2>What happens next?</h2> The availability of updated vaccines is a welcome development, however this is not the end of the story. We need to make sure eligible people get vaccinated. We also need to acknowledge that vaccination should form part of a comprehensive strategy to limit the impact of COVID from now on. That includes measures such as mask wearing, social distancing, focusing on ventilation and air quality, and to a lesser degree hand hygiene. Rapidly accessing antivirals if eligible is also still important, as is keeping away from others if you are infected.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/217804/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/paul-griffin-1129798">Paul Griffin</a>, Professor, Infectious Diseases and Microbiology, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-are-the-new-covid-booster-vaccines-can-i-get-one-do-they-work-are-they-safe-217804">original article</a>.

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Should I get a flu vaccine this year? Here’s what you need to know

<a href="https://theconversation.com/profiles/paul-griffin-1129798">Paul Griffin</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> After having low rates of influenza (flu) transmission in recent years thanks to our COVID control strategies, case numbers are now rising. So far this year, Australia has had <a href="https://www.immunisationcoalition.org.au/news-data/influenza-statistics/">more than 32,000</a> lab-confirmed cases of the flu and 32 deaths. Getting a flu vaccine is the best way to protect against getting the flu. These are reformulated each year to protect against the most widely circulating strains – if our predictions are right. Below you’ll find everything you need to know about the 2023 flu vaccine. But first, some flu basics. <h2>What are the different types of flu?</h2> There are two main types of influenza: influenza A and influenza B. On the surface of the influenza virus there are two main proteins, the hemagglutinin (HA or H) and neuraminidase (NA or N). Different strains are named after their versions of the H and N proteins, as in H1N1 or “swine flu”. <figure class="align-center "><img src="https://images.theconversation.com/files/525044/original/file-20230509-15-c78c12.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/525044/original/file-20230509-15-c78c12.png?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=396&fit=crop&dpr=1 600w, https://images.theconversation.com/files/525044/original/file-20230509-15-c78c12.png?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=396&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/525044/original/file-20230509-15-c78c12.png?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=396&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/525044/original/file-20230509-15-c78c12.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=498&fit=crop&dpr=1 754w, https://images.theconversation.com/files/525044/original/file-20230509-15-c78c12.png?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=498&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/525044/original/file-20230509-15-c78c12.png?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=498&fit=crop&dpr=3 2262w" alt="" /><figcaption>HA is the yellow spike, while the NA is the green oval. <a class="source" href="https://www.shutterstock.com/image-vector/structure-influenza-virus-infographics-vector-illustration-542924464?src=ixiW0w-59I3I17RpN4L3wQ-1-12">Shutterstock</a></figcaption></figure> Minor changes in the proteins (HA and NA) on the surface are common because the enzyme the virus uses to make copies of itself is prone to errors. Sometimes the influenza virus can change more abruptly when it mixes up components from different influenza viruses – including influenza viruses that typically infect birds, pigs or bats – to create a virus that’s basically new. The regular change in the virus is the reason the vaccine is updated every year. The <a href="https://www.tga.gov.au/about-tga/advisory-bodies-and-committees/australian-influenza-vaccine-committee-aivc">Australian Influenza Vaccine Committee</a> meets late in the year to plan what should be included in the vaccine for the following season, after considering what happened in our last flu season and in the Northern hemisphere winter. <h2>What strains does this year’s flu shot protect against?</h2> Modern flu vaccines typically protect against four strains. For this year’s vaccine, the committee <a href="https://www.tga.gov.au/resources/publication/meeting-statements/aivc-recommendations-composition-influenza-vaccines-australia-2023">has recommended</a> it includes: <ul> <li> an A/Sydney/5/2021 (H1N1)pdm09-like virus </li> <li> an A/Darwin/9/2021 (H3N2)-like virus </li> <li> a B/Austria/1359417/2021 (B/Victoria lineage)-like virus </li> <li> a B/Phuket/3073/2013 (B/Yamagata lineage)-like virus. </li> </ul> The naming of the viral components can sometimes be confusing. The name is <a href="https://www.cdc.gov/flu/about/viruses/types.htm">derived from</a> the virus type (A or B)/the place it was first isolated/strain number/year isolated (virus subtype). This year’s vaccine therefore includes an influenza A virus similar to the 2009 pandemic-causing H1N1 isolated from Sydney in 2021 and a second influenza A virus (H3N2) isolated in Darwin in 2021. Influenza B viruses are classified into 2 lineages: Victoria and Yamagata. This year’s vaccine includes an influenza B isolated from Austria in 2021 (Victoria lineage) and an influenza B isolated in Phuket in 2013 (Yamagata lineage). <h2>Who should get a flu shot?</h2> Health authorities <a href="https://www.health.gov.au/topics/immunisation/vaccines/influenza-flu-vaccine">recommend</a> everyone aged six months of age or over should get the flu vaccine every year. <a href="https://www.health.gov.au/news/2023-national-immunisation-program-influenza-vaccination-early-advice-for-vaccination-providers">Some groups</a> are at greater risk of significant disease from the flu and can access the flu vaccine for free. This includes: <ul> <li> Aboriginal and Torres Strait Islander people aged six months and over </li> <li> children aged six months to five years </li> <li> pregnant women at any stage of pregnancy </li> <li> people aged 65 years or over </li> <li> people aged five years to 65 years who have certain underlying health conditions affecting the heart, lungs, kidneys or immune system, and those with diabetes. </li> </ul> <h2>How can I get it?</h2> You can get a flu shot from your local general practice or pharmacy. Or you may have an opportunity to get vaccinated at your workplace if your employer supplies it. While the vaccine is free for those in the <a href="https://www.health.gov.au/sites/default/files/2023-02/fighting-flu-starts-with-you-consumer-fact-sheet.pdf">above groups</a>, there can be a consultation or administration fee, depending on where you get your vaccine. If you aren’t eligible for a free vaccine, it usually costs around A$20-$30. <h2>Are there different options?</h2> For over 65s, whose immune systems may not work as well as when they were younger, a <a href="https://www.health.gov.au/sites/default/files/2023-03/atagi-advice-on-seasonal-influenza-vaccines-in-2023.pdf">specific vaccine</a> is available that includes an adjuvant which boosts the immune response. This is free for over-65s under the national immunisation program. A high-dose vaccine is also available for people aged 60 and over. However this isn’t currently funded and costs around $70 on a private prescription. People with egg allergies can safely get the egg-based flu vaccine. However there is also a cell-based immunisation for people who don’t want a vaccine made in eggs. When vaccines are grown in eggs, sometimes the virus can change and this might affect the level of protection. Cell-based vaccines aim to address this issue. The cell-based vaccine isn’t funded so patients will pay around $40 for a private prescription. <h2>How well do they work?</h2> The vaccine’s effectiveness depends on how well the strains in the vaccine match those circulating. It generally <a href="https://www.health.gov.au/resources/publications/aisr-2022-national-influenza-season-summary">reduces</a> the chance of being admitted to hospital with influenza by <a href="https://www.health.gov.au/sites/default/files/documents/2022/08/influenza-vaccine-efficacy-effectiveness-and-impact-explained.docx">30-60%</a>. <h2>What are the side effects?</h2> You can’t get the flu from the vaccine as there’s no live virus in it. When people get a flu-like illness after the vaccine, it can be due to mild effects we sometimes see after vaccination, such as headaches, tiredness or some aches and pains. These usually go away <a href="https://www.health.gov.au/topics/immunisation/vaccines/influenza-flu-vaccine#possible-side-effects-of-influenza-vaccination">within a day or two</a>. Alternatively, symptoms after getting a flu shot may be due to another respiratory virus such as respiratory syncytial virus (RSV) that circulates in winter. <h2>When’s the best time to get your flu shot?</h2> The vaccine provides <a href="https://immunisationhandbook.health.gov.au/contents/vaccine-preventable-diseases/influenza-flu#vaccine-information">peak protection</a> around three to four months <a href="https://www.health.gov.au/topics/immunisation/vaccines/influenza-flu-vaccine#when-to-get-the-influenza-vaccine">after</a> you get it. The <a href="https://www.immunisationcoalition.org.au/news-data/influenza-statistics/">peak of the flu season</a> is usually between June and September, however this changes every year and can vary in different parts of the country. Given this, the best time to get the vaccine is usually around late April or early May. So if you haven’t already, now would be a good time to get it.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/203406/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/paul-griffin-1129798">Paul Griffin</a>, Associate Professor, Infectious Diseases and Microbiology, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/should-i-get-a-flu-vaccine-this-year-heres-what-you-need-to-know-203406">original article</a>.

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Fran Drescher calls for an end to “bull***t” vaccine mandates

Fran Drescher has divided audiences after using her platform to go on a tirade about bringing an end to “bull***t” vaccine mandates. The former star of The Nanny took to the stage at the 2023 Screen Actors Guild (SAG) Awards on Sunday, and used the opportunity to voice her controversial opinions about Covid-19 restrictions. “As the nation declares an end to the Covid emergency this May, I hope we will see everyone return to work in equal opportunity,” Drescher, 65, said in her speech during the telecast, <a href="https://nypost.com/2023/02/27/fran-drescher-calls-for-end-to-vaccine-mandate-in-sag-speech/?utm_campaign=SocialFlow&utm_medium=SocialFlow&utm_source=NYPTwitter">Page Six</a> reports. The entertainment industry’s pandemic protocols were originally set to end on January 31st, but have been extended until April 1st. Meanwhile, more than 20 US states still enforce vaccine mandates to varying degrees. “Our industry brings billions of production dollars to states across the nation, but if they want our business, let’s wield our financial influence to make governors act in the best interest of freedom, diversity, inclusion and democracy,” Drescher said. “As my character Bobbi Flekman said in This Is Spinal Tap – money talks and bulls**t walks!” Her divisive comments were met with a mixed reaction online, with many viewers claiming it was “irresponsible” for Drescher to use her platform in such a way. <blockquote class="twitter-tweet"> Fran Drescher’s comments on the <a href="https://twitter.com/hashtag/CovidVaccine?src=hash&ref_src=twsrc%5Etfw">#CovidVaccine</a> were irresponsible. Using her logic, people wouldn’t be universally vaccinated against diseases like measles and tetanus. Public health is PUBLIC because it takes collective work. — 🇺🇦мег 🇺🇦 (@sassybibrarian) <a href="https://twitter.com/sassybibrarian/status/1630038810095648768?ref_src=twsrc%5Etfw">February 27, 2023</a></blockquote> <blockquote class="twitter-tweet"> God I love Fran Drescher, but her speech at the SAG awards could have been an email. — Francis (@Fusterduster) <a href="https://twitter.com/Fusterduster/status/1630022506668249088?ref_src=twsrc%5Etfw">February 27, 2023</a></blockquote> <blockquote class="twitter-tweet"> Woody Harrelson and now Fran Drescher. Big weekend for anti-vaxxers. — 𝐓𝐨𝐦𝐚𝐬 ⁽ʷʰᵒ ⁱˢ ᵍᵃʸ⁾ (@cinema_gay) <a href="https://twitter.com/cinema_gay/status/1630021950293655554?ref_src=twsrc%5Etfw">February 27, 2023</a></blockquote> Elsewhere in her speech, Drescher also discussed her efforts to help make Hollywood more environmentally friendly by joining with Green Council with a goal to eliminate single-use plastic both on camera and behind the scenes. She also applauded IMDb for “taking a stand against ageism, stereotyping and gender rigidity by allowing our members to define themselves their way on their profile page – for free.” Image credits: Getty Images

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Thousands of Tasmanian devils are dying from cancer – but a new vaccine approach could help us save them

Tasmanian devils are tough little creatures with a ferocious reputation. Tragically, each year thousands of Tasmanian devils suffer and die from contagious cancers – devil facial tumours. We have discovered that a modified virus, like the attenuated adenovirus used in the AstraZeneca COVID-19 vaccine, can make devil facial tumour cells more visible to the devil immune system. We have also found key immune targets on devil facial tumour cells. These combined advances allow us to move forward with a vaccine that helps the devil immune system find and fight the cancer. And we have a clever way to deliver this vaccine, too – with edible baits. A puzzling cancer Tasmanian devils mainly suffer from the original devil facial tumour, or DFT1. A second type of devil facial tumour (DFT2) has begun emerging in southern Tasmania that further threatens the already endangered devil population. DFT1 and DFT2 are <a href="https://www.tcg.vet.cam.ac.uk/about/DFTD">transmissible cancers</a> – they spread living cancer cells when the devils bite each other. This has presented a puzzle: a cancer cell that comes from another animal should be detected by the immune system as an invader, because it is “genetically mismatched”. For example, in human medicine, tissue transplants need to be genetically matched between the donor and recipient to avoid the immune system rejecting the transplant. Somehow, DFT1 and DFT2 seem to evade the immune system, and devils die from tumours spreading throughout their body or from malnutrition due to the facial tumours disrupting their ability to eat. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/495558/original/file-20221116-12-jv29a8.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/495558/original/file-20221116-12-jv29a8.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/495558/original/file-20221116-12-jv29a8.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=338&fit=crop&dpr=1 600w, https://images.theconversation.com/files/495558/original/file-20221116-12-jv29a8.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=338&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/495558/original/file-20221116-12-jv29a8.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=338&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/495558/original/file-20221116-12-jv29a8.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=424&fit=crop&dpr=1 754w, https://images.theconversation.com/files/495558/original/file-20221116-12-jv29a8.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=424&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/495558/original/file-20221116-12-jv29a8.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=424&fit=crop&dpr=3 2262w" alt="Close-up of a Tasmanian devil held by human hands, with a tumour on its lower jaw" /></a><figcaption>A Tasmanian devil with DFT1. Andrew S. Flies @WildImmunity</figcaption></figure> On the bright side, the immune systems of a few wild devils have been able to overcome DFT1. Furthermore, <a href="https://www.nature.com/articles/srep43827">previous vaccine and immunotherapy trials</a> showed the devil immune system can be activated to kill DFT1 cells and clear away sizeable tumours. This good news from both the field and the laboratory has allowed our team to zoom in on key DFT protein targets that the devil immune system can attack. This helps us in our quest to develop a more effective and scalable vaccine. How can we vaccinate wild animals? Even if we succeed in producing a <a href="https://doi.org/10.1080/14760584.2020.1711058">protective DFT vaccine</a>, we can’t trap and inject every devil. Luckily, clever researchers in Europe in the 1970s figured out that <a href="https://doi.org/10.1371/journal.pntd.0003953">vaccines can be incorporated into edible food baits</a> to vaccinate wildlife across diverse landscapes and ecosystems. In 2019, we hypothesised an oral bait vaccine could be made to protect devils from DFT1 and DFT2. Fast forward to November 2022 and the pieces of this ambitious project are falling into place. First, using samples from <a href="https://doi.org/10.1007/s00432-021-03601-x">devils with strong anti-tumour responses</a>, we have found that the main immune targets are <a href="https://doi.org/10.1098/rsob.220208">major histocompatibility proteins</a>. These are usually the main targets in transplant rejection. This tells us what to put into the vaccine. Second, we tested a virus-based delivery system for the vaccine. We used a weakened adenovirus most of the human population has already been exposed to, and found that in the lab this virus can enter devil facial tumour cells. Importantly, the weakened adenovirus can be modified to produce proteins that can <a href="https://doi.org/10.1099/jgv.0.001812">stimulate the devil immune system</a>. This means it forces the devil facial tumour cells to show the major histocompatibility proteins they normally hide, making the cells “visible” to cancer-killing immune cells. This vaccine approach is much like the AstraZeneca COVID-19 vaccine that uses a weakened chimpanzee adenovirus to deliver cargo to our immune system, getting it to recognise SARS-CoV-2. <a href="https://www.aphis.usda.gov/wildlife_damage/nepa/states/US/us-2019-onrab-ea.pdf">Adenoviral vaccines have also been widely used</a> in oral bait vaccines to protect raccoons from the rabies virus. Edible protection But there were additional challenges to overcome. Our collaborators in the USA who research and develop other wildlife vaccines suggested that developing an effective bait for devils might be as challenging as making the vaccine itself. Our first studies of placebo baits in the wild confirmed this. Contrary to previous studies which showed devils eating most of the baits, we found the baits were also readily consumed by other species, including eastern quolls, brushtail possums, and Tasmanian pademelons. This led us to test an automatic bait dispenser supplied by our collaborators at the US Department of Agriculture National Wildlife Research Center. The <a href="https://www.publish.csiro.au/WR/justaccepted/WR22070">dispensers proved quite effective</a> at reducing the amount of “off target” bait consumption and showed devils could successfully retrieve the baits with their dexterous paws. <figure><iframe src="https://www.youtube.com/embed/5BEBfFqOY8k?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>Tasmanian devil retrieving a placebo bait from an automatic bait dispenser.</figcaption></figure> Encouragingly, a recent mathematical modelling study suggests an <a href="https://lettersinbiomath.journals.publicknowledgeproject.org/index.php/lib/article/view/555">oral bait vaccine could eliminate DFT1</a> from Tasmania. Successful delivery of the vaccine would be a demanding and long-term commitment. But with it, we could prevent the suffering and deaths of thousands of individual devils, along with helping to reestablish a healthy wild devil population. Can’t stop now A bit of additional good news fell into place in late 2022 with the announcement that our international team was awarded an Australian Research Council Linkage Project grant to develop better baits and ways to monitor wildlife health in the field. These oral bait vaccine techniques that eliminate the need to catch and jab animals could be applied to future wildlife and livestock diseases, not just Tassie devils. Building on this momentum, we are planning to start new vaccine trials in 2023. We don’t know yet if this new experimental vaccine can prevent devils from getting devil facial tumours. However, the leap we have made in the past three years and new technology gives us momentum and hope that we might be able to stop DFT2 before it spreads across the state. Perhaps, we can even eliminate DFT1.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/194536/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> Writen by Andrew S. Flies, Chrissie Ong and Ruth Pye. Republished with permission from <a href="https://theconversation.com/thousands-of-tasmanian-devils-are-dying-from-cancer-but-a-new-vaccine-approach-could-help-us-save-them-194536" target="_blank" rel="noopener">The Conversation</a>. Image: Getty Images

Family & Pets

Cruise ships are back and carrying COVID. No, it’s not 2020. But here’s what needs to happen next

Cruise ships carrying passengers with COVID are back in the news. The Coral Princess, with an unconfirmed number of people testing positive on board, is <a href="https://www.canberratimes.com.au/story/7959796/virus-infected-cruise-ship-to-dock-in-wa/" target="_blank" rel="noopener">set to dock</a> at Fremantle, Western Australia. The Quantum of The Seas, with passengers reportedly testing positive, <a href="https://twitter.com/9NewsQueensland/status/1585194230825246721" target="_blank" rel="noopener">is heading for</a> Brisbane. There have been similar situations at other ports in <a href="https://www.rnz.co.nz/news/national/477429/cruise-ship-with-covid-19-cases-failed-to-follow-current-isolation-guidelines" target="_blank" rel="noopener">New Zealand</a> and <a href="https://www.cruiselawnews.com/2022/10/articles/disease/covid-cruise-ships-return-down-under-with-hundreds-of-infected-guests/" target="_blank" rel="noopener">the Pacific</a>. <blockquote class="twitter-tweet"> FIRST ON 9: A COVID-riddled cruise ship is heading for Brisbane, with passengers reporting hundreds of people are confined to their rooms. <a href="https://twitter.com/Anna_Rawlings?ref_src=twsrc%5Etfw">@Anna_Rawlings</a> <a href="https://twitter.com/hashtag/9News?src=hash&ref_src=twsrc%5Etfw">#9News</a> <a href="https://t.co/ygLdE5FlqG">pic.twitter.com/ygLdE5FlqG</a> — 9News Queensland (@9NewsQueensland) <a href="https://twitter.com/9NewsQueensland/status/1585194230825246721?ref_src=twsrc%5Etfw">October 26, 2022</a></blockquote> But this isn’t 2020. The cruise ship industry and health authorities have learned much from large outbreaks linked to the Ruby Princess and Diamond Princess cruise ships early in the pandemic. Yet, there’s even more we can do to limit the impact of SARS-CoV-2 (the virus that causes COVID) spreading from cruise ships to communities on land. Why are we worried about cruise ships? Cruise ships can have epidemics of a variety of infectious diseases, <a href="https://theconversation.com/cruise-ships-can-be-floating-petri-dishes-of-gastro-bugs-6-ways-to-stay-healthy-at-sea-this-summer-126351" target="_blank" rel="noopener">not just COVID</a>, facilitated by large numbers of people in close proximity, especially during indoor social activities. We know SARS-CoV-2 is spread mainly by <a href="https://theconversation.com/the-pressure-is-on-for-australia-to-accept-the-coronavirus-really-can-spread-in-the-air-we-breathe-160641" target="_blank" rel="noopener">inhaling contaminated air</a>, so indoor activities may pose a risk if ventilation is poor. Cruises typically last at least a week, which covers the incubation period for infections such as influenza and COVID. So all it takes is for one infected person to be on the ship to set off an epidemic. <blockquote class="twitter-tweet"> More than 130 passengers and crew on the first cruise ship to arrive in the country in two years have tested positive for Covid-19.<a href="https://t.co/tA73LTzQad">https://t.co/tA73LTzQad</a> — RNZ (@radionz) <a href="https://twitter.com/radionz/status/1584959572342878208?ref_src=twsrc%5Etfw">October 25, 2022</a></blockquote> Staff stay on ships much longer than passengers, and can continue to infect new passengers, perpetuating a cycle of outbreaks. But <a href="https://www.nature.com/articles/s41591-020-0869-5#Fig1" target="_blank" rel="noopener">almost half</a> of infections are transmitted asymptomatically. So, without testing everyone on board (before they board and during outbreaks), infectious people can board a ship without being aware they are infected and cause an epidemic. Infected staff can also infect new passengers, and passengers can infect communities they visit on land. What happened with cruise ships and COVID in 2020? Early in the pandemic, large outbreaks on ships, such as the <a href="https://theconversation.com/yes-australians-on-board-the-diamond-princess-need-to-go-into-quarantine-again-its-time-to-reset-the-clock-131906" target="_blank" rel="noopener">Diamond Princess</a> made the headlines. Some 634 of 3,711 (17%) people on board <a href="https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2020.25.10.2000180" target="_blank" rel="noopener">tested positive</a> for COVID. The ship was quarantined for two weeks. An <a href="https://elifesciences.org/articles/58699?utm_source=content_alert&utm_medium=email&utm_content=fulltext&utm_campaign=26-August-20-elife-alert" target="_blank" rel="noopener">estimated 69%</a> of transmissions on board were transmitted asymptomatically. The Ruby Princess had a COVID outbreak in March 2020 with <a href="https://www.abc.net.au/news/2022-10-12/nsw-ruby-princess-class-action-trial-covid-19-testing-sydney/101527156" target="_blank" rel="noopener">around 700 cases</a>. Yet health authorities allowed passengers to disembark in Sydney without testing, who then dispersed around the country at a time we had no vaccines. Our research <a href="http://www.ijtmgh.com/article_119534_550421b9e1139603f85c3fc9af97d25a.pdf" target="_blank" rel="noopener">showed</a> this resulted in growing community clusters for weeks afterwards. But it’s not 2020 We now have vaccines. But vaccination rates vary globally (and cruise passengers are often from many countries). Some vaccines are <a href="https://pmj.bmj.com/content/postgradmedj/98/1159/389.full.pdf" target="_blank" rel="noopener">less effective than others</a>, not everyone is up-to-date with their <a href="https://theconversation.com/millions-of-australians-still-havent-had-their-covid-boosters-what-message-could-convince-them-now-190482" target="_blank" rel="noopener">booster shots</a>, <a href="https://www.bmj.com/content/377/bmj-2022-071113" target="_blank" rel="noopener">vaccine immunity wanes</a> (even after having a booster), and current vaccines are generally <a href="https://theconversation.com/whats-the-difference-in-protection-against-omicron-between-2-doses-and-3-doses-of-vaccine-176447" target="_blank" rel="noopener">less-effective</a> against currently circulating Omicron subvariants. This means people can be infected and infectious despite being vaccinated. Many of us have also had COVID, especially in 2022. But our immunity following infection (whether or not we’re also up to date with our vaccines) wanes too. People who were infected with older variants may also have a <a href="https://www.science.org/doi/10.1126/science.abq1841" target="_blank" rel="noopener">dampened immune response to Omicron</a>, which means limited protection. <blockquote class="twitter-tweet"> Australia’s COVID vax program has lost all momentum: booster rates are going nowhere. The $11 million winter booster communication campaign had no impact. An updated Omicron vaccine is on the way, but have we lost the motivation to get a shot? <a href="https://twitter.com/GrattanInst?ref_src=twsrc%5Etfw">@GrattanInst</a> <a href="https://t.co/DjHeW59ssT">pic.twitter.com/DjHeW59ssT</a> — #UnhealthyIndustries (@WePublicHealth) <a href="https://twitter.com/WePublicHealth/status/1575705478461419520?ref_src=twsrc%5Etfw">September 30, 2022</a></blockquote> Cruise ships and health authorities have also tightened up their COVID protocols. The New South Wales government, for instance, publishes on its website <a href="https://www.nsw.gov.au/covid-19/travel/cruising-rules" target="_blank" rel="noopener">the COVID risk</a> of in-coming vessels. It places ships in one of three categories according to a number of factors, including the number of COVID cases on board. Cruise ships also have <a href="https://cruisepassenger.com.au/news/coral-princess-covid-outbreak/" target="_blank" rel="noopener">strict protocols</a> for controlling and managing outbreaks. This includes masks for close contacts, mandatory isolation for infected passengers for five days, and testing of anyone with symptoms. The problem is that transmission can continue because of asymptomatic infections. The ship may need medical evacuations or assistance for severely ill people. There is also the problem of infection being transmitted to communities on shore after people without symptoms disembark. <blockquote class="twitter-tweet"> .<a href="https://twitter.com/PrincessCruises?ref_src=twsrc%5Etfw">@PrincessCruises</a> Majestic Princess had at least 116 <a href="https://twitter.com/hashtag/cruise?src=hash&ref_src=twsrc%5Etfw">#cruise</a> guests with <a href="https://twitter.com/hashtag/COVID19?src=hash&ref_src=twsrc%5Etfw">#COVID19</a> when it arrived in <a href="https://twitter.com/hashtag/Tahiti?src=hash&ref_src=twsrc%5Etfw">#Tahiti</a>, according to a local newspaper. <a href="https://t.co/LtvDaVKIaR">https://t.co/LtvDaVKIaR</a> — James (Jim) Walker (@CruiseLaw) <a href="https://twitter.com/CruiseLaw/status/1585389753591279616?ref_src=twsrc%5Etfw">October 26, 2022</a></blockquote> We can do more People disembarking and unknowingly spreading the virus is especially a problem for small towns. The itinerary of the Coral Princess, which has since been modified, included the Western Australian towns of Broome and Geraldton, both of which have large Aboriginal communities, and other towns, such as Albany and Busselton. Small towns may not have a hospital, may have limited access to health care, and would not have capacity to deal with many severely ill patients. Capacity for medical evacuations are also limited. In the map below, we can see how hospitals are distributed in rural areas around Broome. Most hospitals are near Perth and the southwest coast. Broome has one hospital with about 40 beds. Large hospitals in Perth and Darwin are about 2,000 kilometres away, which would be the destinations for medical evacuations of severely ill patients. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/492085/original/file-20221027-36452-5tqk25.png?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/492085/original/file-20221027-36452-5tqk25.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/492085/original/file-20221027-36452-5tqk25.png?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=849&fit=crop&dpr=1 600w, https://images.theconversation.com/files/492085/original/file-20221027-36452-5tqk25.png?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=849&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/492085/original/file-20221027-36452-5tqk25.png?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=849&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/492085/original/file-20221027-36452-5tqk25.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=1067&fit=crop&dpr=1 754w, https://images.theconversation.com/files/492085/original/file-20221027-36452-5tqk25.png?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=1067&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/492085/original/file-20221027-36452-5tqk25.png?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=1067&fit=crop&dpr=3 2262w" alt="Map showing distribution of hospitals in Western Australia" /></a><figcaption>Most major hospitals are near Perth, which is about 2,000 kilometres from Broome. Samsung Lim, author provided</figcaption></figure> So it’s important to monitor for outbreaks in Broome after the Coral Princess docked there this week, and ensure availability of testing to enable early intervention (such as antiviral drugs) to control outbreaks. Cruises with outbreaks on board should ideally <a href="https://ozsage.org/working_group/regional-rural-and-remote/" target="_blank" rel="noopener">avoid</a> small towns or remote locations with limited health services or vulnerable populations, as the impacts on these communities may be much greater than in a large city. Visiting small towns during an on-board epidemic <a href="https://ozsage.org/media_releases/ozsage-position-statement-cruise-ship-epidemic-and-risk-to-small-towns-in-western-australia/" target="_blank" rel="noopener">would be safer</a> if everyone who disembarks is tested first, is negative, and wears a mask on shore. What else could we do? The cruising industry has acknowledged the reality of COVID being a continuing threat. This could be improved by recognising the role of asymptomatic transmission in testing policies. For instance, all passengers and crew should have a negative rapid antigen test at the start of the cruise, and during an outbreak. All close contacts and all disembarking passengers should be tested for COVID, regardless of symptoms. The cost of testing would be much less than the lost costs of large epidemics. During a cruise epidemic, companies also need to consider the locations being visited, how much COVID is already present there (some remote towns have very little COVID) and available health-care systems for locals. Rapid use of antivirals may also help to control epidemics on board as these allow passengers testing positive to <a href="https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(22)00644-2/fulltext" target="_blank" rel="noopener">clear the virus faster</a>. The aviation industry <a href="https://www.ashrae.org/file%20library/technical%20resources/covid-19/12-19_walkinshaw.pdf" target="_blank" rel="noopener">does well</a> in providing safe air in-flight. The cruise industry has also started <a href="https://www.cruisecritic.com.au/articles.cfm?ID=5474" target="_blank" rel="noopener">changing ventilation</a> to add fresh air instead of recirculated air indoors. But there is still some way to go before we can say the threat of COVID is over, on-board or on land.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/193384/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> Writen by C Raina MacIntyre. Republished with permission from <a href="https://theconversation.com/cruise-ships-are-back-and-carrying-covid-no-its-not-2020-but-heres-what-needs-to-happen-next-193384" target="_blank" rel="noopener">The Conversation</a>. Image: Getty Images

Cruising

Viral infections including COVID are among the important causes of dementia – one more reason to consider vaccination

With more of us living into old age than at any other time, dementia is increasing steadily worldwide, with major individual, family, societal and economic consequences. Treatment remains largely ineffective and aspects of the underlying pathophysiology are still unclear. But there is good evidence that neurodegenerative diseases – and their manifestation as dementia – are not an inevitable consequence of ageing. Many <a href="https://blogs.otago.ac.nz/pubhealthexpert/dementia-update-on-causes-and-prevention-including-the-role-of-covid-19/" target="_blank" rel="noopener">causes of dementia</a>, including viral infections, are preventable. COVID and other viral infections are centrally involved in insults to the brain and subsequent neurodegeneration. COVID-positive outpatients have a more than three-fold higher risk of Alzheimer’s and more than two-fold <a href="https://www.frontiersin.org/articles/10.3389/fneur.2022.904796/full" target="_blank" rel="noopener">higher risk of Parkinson’s disease</a>. A study of almost three million found risks of psychiatric disorders following COVID infection returned to baseline after one to two months. But other disorders, including “<a href="https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0366(22)00260-7/fulltext" target="_blank" rel="noopener">brain fog</a>” and dementia, were still higher than among controls two years later. <blockquote class="twitter-tweet"> 🚨I wrote about “brain fog”—one of the most common & disabling symptoms of long COVID (and many other pre-pandemic conditions), and one of the most misunderstood. Here’s what brain fog actually is, and what it’s like to live with it. 1/ <a href="https://t.co/Gq8iylgfBr">https://t.co/Gq8iylgfBr</a> — Ed Yong is on sabbatical (@edyong209) <a href="https://twitter.com/edyong209/status/1569302974811308032?ref_src=twsrc%5Etfw">September 12, 2022</a></blockquote> Among more than six million adults older than 65, individuals with COVID were at a <a href="https://content.iospress.com/articles/journal-of-alzheimers-disease/jad220717" target="_blank" rel="noopener">70% higher risk than the uninfected</a> for a new diagnosis of Alzheimer’s disease within a year of testing positive for COVID. More than 150,000 people with COVID and 11 million controls have been involved in a <a href="https://www.nature.com/articles/s41591-022-02001-z" target="_blank" rel="noopener">study</a> of long-term consequences of acute COVID infection. A year after infection, there was an overall 40% higher risk (an additional 71 cases per 1000 people) of neurologic disorders, including memory problems (80% higher risk) and Alzheimer’s disease (two-fold higher risk). These risks were elevated even among those not hospitalised for acute COVID. SARS-CoV-2, the virus that causes COVID, can <a href="https://rupress.org/jem/article/218/3/e20202135/211674/Neuroinvasion-of-SARS-CoV-2-in-human-and-mouse" target="_blank" rel="noopener">invade brain tissue</a>. Other viruses can also cause direct damage to the brain. A study of almost two million people showed the <a href="https://pubmed.ncbi.nlm.nih.gov/35723106/" target="_blank" rel="noopener">risk of Alzheimer’s was markedly lower</a> in those who had been vaccinated against influenza. The cost of dementia Dementia is characterised by <a href="https://www.who.int/en/news-room/fact-sheets/detail/dementia" target="_blank" rel="noopener">progressively deteriorating cognitive function</a>. This involves memory, thinking, orientation, comprehension, language and judgement, often accompanied by changes in mood and emotional control. It is one of the major causes of disability among older people. Worldwide prevalence exceeds 55 million and there are almost ten million new cases annually. It is the seventh leading cause of death. In 2019, the estimated global cost of dementia was US$1.3 trillion and rising. The best known form of dementia – Alzheimer’s – was <a href="https://pubmed.ncbi.nlm.nih.gov/8713166/" target="_blank" rel="noopener">first described in 1907</a>. Dementia is generally described as developing in three stages: <ul> <li> impairment of memory, losing track of time and becoming lost in familiar places </li> <li> further deterioration of memory with forgetfulness of names and recent events, becoming confused at home, losing communication skills and personal care habits, repeated questioning, wandering </li> <li> increased difficulty walking, progressing to inactivity, marked memory loss, involving failure to recognise relatives and friends, disorientation in time and place, changes in behaviour, including lack of personal care and emergence of aggression. </li> </ul> Treatments largely unsuccessful There are no cures and no resounding treatment successes. Management involves support for patients and carers to optimise physical activity, stimulate memory and treat accompanying physical or mental illness. Dementia has a <a href="https://www.who.int/en/news-room/fact-sheets/detail/dementia" target="_blank" rel="noopener">disproportionate impact on women</a>, who account for 65% of dementia deaths and provide 70% of carer hours. We may know less about the pathology of dementia than we imagined: some key data are under scrutiny for <a href="https://www.science.org/content/article/potential-fabrication-research-images-threatens-key-theory-alzheimers-disease" target="_blank" rel="noopener">possible inappropriate manipulation</a>. But we do know about many of the causes of dementia and therefore about prevention. In addition to viral infections, there are at least four other contributing causes: <a href="https://pubmed.ncbi.nlm.nih.gov/19782001/" target="_blank" rel="noopener">cardiovascular disease</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/30833374/" target="_blank" rel="noopener">type 2 diabetes</a> (especially if untreated), <a href="https://pubmed.ncbi.nlm.nih.gov/29653873/" target="_blank" rel="noopener">traumatic brain injury</a> and <a href="https://www.bmj.com/content/357/bmj.j2353" target="_blank" rel="noopener">alcohol</a>. The brain has its own immune system – cells called microglia. These play a role in brain development, <a href="https://www.nature.com/articles/s41588-022-01149-1" target="_blank" rel="noopener">account for 5-10% of brain mass</a> and become activated by damage and loss of function. They are also <a href="https://pubmed.ncbi.nlm.nih.gov/23622250/" target="_blank" rel="noopener">implicated in Alzheimer’s</a> and their inflammation has been shown to be <a href="https://pubmed.ncbi.nlm.nih.gov/23254930/" target="_blank" rel="noopener">central to its pathology</a>. Dementia is preventable In the absence of effective treatment, prevention is an important goal. The association with viral infections means we should pay careful attention to vaccine availability and uptake (for influenza, COVID and any future variants) and place greater emphasis on combatting misinformation regarding vaccines. The association with atherosclerosis and stroke, as well as diabetes, supports primary prevention that involves healthier diets (plant-based diets low in salt and saturated fats), physical activity and weight control. Alcohol consumption is a major problem globally. We have allowed high intake to be normalised and talk about no more than two glasses per day as though that is innocuous. Despite the myth of some beneficial aspects of alcohol, the <a href="https://www.thelancet.com/article/S0140-6736(18)31310-2/fulltext" target="_blank" rel="noopener">safest intake is zero drinks per week</a>. <blockquote class="twitter-tweet"> My article speaks about a study that showed that people who chronically consume alcohol and become unconscious because of it, their chances of having dementia increase 10 fold. <a href="https://t.co/0DOFf9X5Zx">https://t.co/0DOFf9X5Zx</a> <a href="https://twitter.com/mrcopsych?ref_src=twsrc%5Etfw">@mrcopsych</a> — Hannah (@Hannah46221416) <a href="https://twitter.com/Hannah46221416/status/1575274580788355074?ref_src=twsrc%5Etfw">September 29, 2022</a></blockquote> This requires a complete <a href="https://pubmed.ncbi.nlm.nih.gov/19560606/" target="_blank" rel="noopener">national rethink</a> around the availability and acceptability of alcohol as well as assistance with alcohol addiction and treatment of alcohol-related disorders. Traumatic brain injury is associated with sport and, more importantly, falls and car crashes. It is recognised as a global priority and there is increasing awareness of the preventability of falls among older people. The management of head injuries is being ramped up in contact sports. However, data on the impact of best management of the initial injury on subsequent risk of dementia are lacking and <a href="https://pubmed.ncbi.nlm.nih.gov/29381704/" target="_blank" rel="noopener">risk remains elevated</a> even 30 years after the initial trauma. The evidence that dementia has preventable causes, including viral infection, should better inform policy and our own behaviour.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/190962/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/john-donne-potter-1275983" target="_blank" rel="noopener">John Donne Potter</a>, Professor, Research Centre for Hauora and Health, <a href="https://theconversation.com/institutions/massey-university-806" target="_blank" rel="noopener">Massey University</a> This article is republished from <a href="https://theconversation.com" target="_blank" rel="noopener">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/viral-infections-including-covid-are-among-the-important-causes-of-dementia-one-more-reason-to-consider-vaccination-190962" target="_blank" rel="noopener">original article</a>. Image: Getty Images

Mind

Vaccine status no longer required

International travellers to Australia will no longer be required to submit their covid vaccine status. Chief Medical Officer Paul Kelly amended the Biosecurity Act 2015 which will come into effect from July 6. “The Australian Government makes decisions on COVID related issues after considering the latest medical advice,” Health Minister Mark Butler said. “The Chief Medical Officer has advised it is no longer necessary for travellers to declare their vaccine status as part of our management of COVID. “Unvaccinated Australians, as well as certain groups of visa holders, have been able to travel to Australia for some time. “We will continue to act on the medical advice as needed.” Travellers however must still comply with the Covid-19 rules of airlines, including states and territories, and other countries. This currently includes wearing masks on inbound international flights. State and territory orders mandating masks on domestic flights also remain in place. Image: Shutterstock

International Travel

Time to remove vaccine mandates? Not so fast – it could have unintended consequences

Several Australian states have used mandates to drive up COVID vaccination rates. Governments justified the mandates on the basis of <a href="https://www.facebook.com/photo.php?fbid=479962466825937&set=pb.100044365632393.-2207520000..&type=3">preventing the spread of disease</a> and <a href="https://statements.qld.gov.au/statements/93754">protecting the vulnerable</a>. Now many states are rolling back these mandates, with Queensland <a href="https://www.abc.net.au/news/2022-04-05/qld-coronavirus-covid19-vaccination-mandate-eased-april-14/100958850">removing the requirement to show you’re vaccinated</a> before entering cafes, pubs, galleries and other public spaces from tomorrow. It would be nice to think that when mandates have served their purpose, they can be removed. In practice, removing mandates may affect public attitudes about the importance of vaccination and the likelihood of getting boosters. Remind me, what were the mandates? <a href="https://theconversation.com/vaccine-passports-are-coming-to-australia-how-will-they-work-and-what-will-you-need-them-for-167531">Public space mandates</a> involve governments mandating that venues (such as restaurants, libraries and sporting venues) check individuals’ vaccination status and <a href="https://theconversation.com/is-it-time-to-rethink-vaccine-mandates-for-dining-fitness-and-events-we-asked-5-experts-176356">exclude the unvaccinated</a>. This is facilitated by <a href="https://theconversation.com/could-a-france-style-vaccine-mandate-for-public-spaces-work-in-australia-legally-yes-but-its-complicated-165814">vaccine passports and certificates</a>. <a href="https://www.sciencedirect.com/science/article/pii/S0264410X21015309?via%3Dihub">Government employment mandates</a> involve governments requiring workers in specific industries to be vaccinated. Businesses and organisations may also implement their own policies requiring the vaccination of their staff, their clients, or both. Most states and territories embraced public space mandates and all have required vaccination of aged and health-care workers. But many are on their way out. NSW eased its requirements last year. South Australia has recently revoked mandates for police, teachers and transport workers. Queensland’s new policy is noted above. Victoria, Western Australia, and the Northern Territory are sitting with their existing requirements for now. What could happen next? It’s unclear what impact removing vaccine mandates will have in Australia. However, we can learn from other public health measures and COVID vaccine mandates implemented overseas. Seat-belt laws converted a government requirement into a widespread social norm. Car manufacturers reinforced the norm with vehicles that beep at us when we don’t comply. But just because something has become habitual doesn’t mean we can lose the law. If governments removed the seat-belt law now and expected us to comply because we are informed, educated, and socialised, some people would still conclude that seat belts are no longer important. Removal of a requirement can send a bad message. The Italian government learned this when the region of Veneto suspended childhood vaccine mandates for four childhood vaccines in 2007. Officials thought the region’s wealthy and educated population would continue to vaccinate their children if the regional government provided strong education and messaging. They were <a href="https://doi.org/10.1007/s11077-021-09427-1">wrong</a>. Their strategy worked until there was a national vaccine scare in 2012. Vaccination rates in Veneto plummeted faster than anywhere else in the country. Eventually, the national government <a href="https://research-repository.uwa.edu.au/en/publications/recent-vaccine-mandates-in-the-united-states-europe-and-australia">mandated more vaccines</a> for the whole country. Other countries have already experimented with introducing, removing, and sometimes re-introducing mandates. Some, such as <a href="https://www.thelancet.com/journals/lanres/article/PIIS2213-2600(22)00063-7/fulltext">Austria</a> and the <a href="https://www.instituteforgovernment.org.uk/explainers/vaccine-mandates">United Kingdom</a>, have flip-flopped, providing little opportunity to study the impact of their mandates’ introduction or removal. Israel, which vaccinated its population promptly with Pfizer to the envy of the world, used a “public space” mandate (with an opt-out of a negative COVID test). The mandate has been <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8582817/">switched on and off</a> depending on the disease situation at the time. Unfortunately, Israelis’ uptake of subsequent doses has <a href="https://datadashboard.health.gov.il/COVID-19/general">dropped over time</a>, but its government still <a href="https://www.news.com.au/world/coronavirus/global/israel-rolls-back-green-pass-as-prime-minister-declares-the-covid-wave-is-breaking/news-story/b6f9ce495359166126b16c477af062b3">ended the mandate</a> in February. Mandates are also not without <a href="https://www.mja.com.au/journal/2021/215/11/policy-considerations-mandatory-covid-19-vaccination-collaboration-social">risks and costs</a>. They can provoke reactance, making those who are reluctant to vaccinate more determined not to do so. They may also prompt activism against vaccines and mandates. High vaccination rates help contain COVID One of the biggest challenges is nobody knows what the next phase of COVID will look like. Neither infection nor the current vaccines provide long-lasting immunity. We don’t know whether the next strain will continue the trajectory towards less serious symptoms started by Omicron (and helped by high vaccination rates). Whether we continue to be able to stay on top of COVID and whether the disease continues to remain less severe in most people infected will depend on maintaining high vaccination coverage rates. Governments across the nation and the world have struggled to get third doses into populations at the same level and with the same enthusiasm people showed towards the first two. Uptake in paediatric populations is also lagging in Australia – and there are no mandates. Now adults are being asked to prepare for and accept our fourth doses. Leading the way Western Australia has one of the highest rates of uptake in the country, with 76.7% of people aged over 16 <a href="https://www.facebook.com/photo?fbid=533610064794510&set=a.263657845123068">triple dosed</a>. This compares with the <a href="https://www.health.gov.au/sites/default/files/documents/2022/04/covid-19-vaccine-rollout-update-8-april-2022.pdf">national average</a> of 52.3%. It’s no coincidence the state’s employment mandates, which cover 75% of the workforce, require workers have their third dose within a month of becoming eligible. The WA mandate did not contain three doses to begin with, but it was very easy for the government to build it in. Faced with rolling back the mandate or keeping it operational for the fourth dose, the government will have to grapple with whether the population continues to support these measures – and there are definitely people who reluctantly accepted two doses and are not prepared to keep having more. WA’s public space mandate only covers two doses for now. WA’s COVID vaccination experience has shown that mandates, including for third doses, drive high levels of uptake, and are <a href="https://www.ijhpm.com/article_4210.html">easy for governments to implement</a>. However, much of the rest of Australia is moving in an opposite direction to WA in removing its mandates. As we live through the continued natural experiment of living with COVID – and not allowing it to defeat us – we now move into a new phase of making sense of what to do with the policy instruments governments used.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/180781/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/katie-attwell-94905" target="_blank" rel="noopener">Katie Attwell</a>, Associate professor, <a href="https://theconversation.com/institutions/the-university-of-western-australia-1067" target="_blank" rel="noopener">The University of Western Australia</a> This article is republished from <a href="https://theconversation.com" target="_blank" rel="noopener">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/time-to-remove-vaccine-mandates-not-so-fast-it-could-have-unintended-consequences-180781" target="_blank" rel="noopener">original article</a>. Image: Getty Images

Domestic Travel

Scientists creating inhalable Covid vaccine

Scientists are a step closer to creating an inhalable “aerogel” vaccine that successfully induces an immune response against Covid. Researchers at Penn State University developed and patented a gel-like material, called an "aerogel," to deliver antimicrobials to the lungs to treat bacterial respiratory infections, particularly tuberculosis. Graduate student in biomedical engineering and a lead author of the <a href="https://www.psu.edu/news/story/inhalable-aerogel-triggers-immunity-covid-19-mice-may-block-transmission/" target="_blank" rel="noopener">study</a> Atip Lawanprasert said there was an advantage to the inhalable formulation for those who don’t like needles. “One is avoidance of needles. Inhalable vaccines might be able to help increase the rate of vaccination because so many people are afraid of injections,” he said. “No matter how high the efficacy of a vaccine, if people don’t get it, then it’s not useful.” Scott Medina, an assistant professor of biomedical engineering at the university, said the team started working on the inhalable vaccine when the pandemic began. “When the pandemic started, we decided to develop an inhalable formulation for COVID-19 by combining our aerogel with a nucleic acid-encoded antigen — specifically, DNA that encodes the SARS-CoV-2 proteins,” he said. Their Covid formula, also known as CoMiP (coronavirus mimetic particle), was created to target alveolar macrophages, a type of white blood cell that surrounds and kills microorganisms, removes dead cells, and stimulates the action of other immune system cells. “Alveolar macrophages represent attractive targets for inhalable vaccines because they are abundant within the lungs, and previous evidence has suggested that they may be important in early COVID-19 pathogenesis,” Medina explained. “Alveolar macrophages are one of our key defenders against viral infection because they serve to present antigens to the rest of the immune system.” The CoMips were tested on mice which were then given a booster dose two weeks later. The samples from the animals were collected 14 days after the vaccine, and day 28, after the booster, which found no significant change in the systemic antibody levels between mice who received CoMiP and those that didn't. The researchers also collected samples from immunised mice to assess differences in the total and spike-protein specific lung mucosal IgA antibodies - the predominant antibody isotype in the mucosal immune system They found a significant increase in the total IgA for mice vaccinated with CoMiPs, but IgA specifically targeting the SARS-CoV-2 spike protein was lower than expected for the vaccinated animals. Medina said data was “encouraging” but more will need to be done. Image: Shutterstock

Body

All the tunes used to repel NZ anti-vaccine mandate protesters

As a protest against vaccine mandates enters its sixth day outside New Zealand’s Parliament House, Speaker of the House Trevor Mallard adopted a rather unconventional way to send protesters packing.With the rain and wind brought on by Cyclone Dovi not appearing to deter protesters, Mallard first attempted to shoo them away by turning on the sprinklers.When that didn’t work either, he <a href="https://theconversation.com/three-unconventional-forms-of-travel-you-should-try-if-you-cant-go-abroad-this-summer-163776" target="_blank" rel="noopener">began blasting</a> widely disliked tunes instead at full volume, along with repeated pro-vaccination messages.<blockquote class="twitter-tweet">Last night the lovely govt played on loop Macarena, vax messaging, & Trevor Mallard warning protesters that erecting structures on parliament lawns was unlawful. All night long. Despite this audio torture & the howling gale, the protest continues. <a href="https://twitter.com/hashtag/Parliament?src=hash&ref_src=twsrc%5Etfw">#Parliament</a> <a href="https://twitter.com/hashtag/convoy2022NZ?src=hash&ref_src=twsrc%5Etfw">#convoy2022NZ</a> <a href="https://t.co/QCtK4T69N7">pic.twitter.com/QCtK4T69N7</a>— @victoria_dlV (@victoria_dlV) <a href="https://twitter.com/victoria_dlV/status/1492654821325041668?ref_src=twsrc%5Etfw">February 13, 2022</a></blockquote>To start with, Mallard’s playlist featured a selection of Copacabana singer Barry Manilow’s songs, Macarena by Los Del Rio, and the children’s tunes including Baby Shark and Let it Go from Disney film Frozen. As news of the Speaker’s playlist spread online, singer James Blunt even weighed in, taking to Twitter to suggest that the NZ government include his music if Manilow’s proved ineffective.<blockquote class="twitter-tweet">Give me a shout if this doesn’t work. <a href="https://twitter.com/nzpolice?ref_src=twsrc%5Etfw">@NZPolice</a> <a href="https://t.co/AM2dZ6asMS">https://t.co/AM2dZ6asMS</a>— James Blunt (@JamesBlunt) <a href="https://twitter.com/JamesBlunt/status/1492586180226990083?ref_src=twsrc%5Etfw">February 12, 2022</a></blockquote>Mallard saw Blunt’s “very kind offer” and quickly added the Brit’s smash hit, You’re Beautiful, to the playlist.<blockquote class="twitter-tweet"><a href="https://twitter.com/JamesBlunt?ref_src=twsrc%5Etfw">@JamesBlunt</a> we will take up your very kind offer. My only doubt is whether it is fair to our <a href="https://twitter.com/nzpolice?ref_src=twsrc%5Etfw">@nzpolice</a> officers but I think they will be able to cope. <a href="https://t.co/spb1BDK50u">https://t.co/spb1BDK50u</a>— Trevor Mallard (@SpeakerTrevor) <a href="https://twitter.com/SpeakerTrevor/status/1492612830935531521?ref_src=twsrc%5Etfw">February 12, 2022</a></blockquote>Other entries on Mallard’s playlist included a humorous rendition of Celine Dion’s My Heart Will Go On, featuring musician Matt Mulholland playing a recorder quite poorly, as well as Randa’s Vaccinate the Nation.<blockquote class="twitter-tweet">This is another suggestion………Crybabies Caravan With Full Band <a href="https://t.co/zjxaet7Wn1">https://t.co/zjxaet7Wn1</a> via <a href="https://twitter.com/YouTube?ref_src=twsrc%5Etfw">@YouTube</a>— Trevor Mallard (@SpeakerTrevor) <a href="https://twitter.com/SpeakerTrevor/status/1492607298476605440?ref_src=twsrc%5Etfw">February 12, 2022</a></blockquote>Social media users have also been sending in recommendations for what has been described as Mallard’s “counter protest”, while others have compiled playlists of annoying tunes guaranteed to irritate.Image: Getty Images

Music

New booster vaccine approved in Australia

An additional vaccine has been <a href="https://www.9news.com.au/national/astrazeneca-booster-shots-provisionally-approved-australia-therapeutic-goods-administration/cb666fd3-dff2-4603-8a56-663b7ad0b225" target="_blank" rel="noopener">granted provisional approval</a> to be used as a booster shot by the Therapeutic Goods Administration (TGA).The TGA announced that a vaccine produced by AstraZeneca, called Vaxzevria, could be administered to individuals over the age of 18 who are yet to receive their third, ‘booster’ dose of a COVID-19 vaccine.However, the TGA continues to recommend that Australians choose Moderna or Pfizer over the newly-approved jab.“The third (booster) dose may be given if clinically indicated with reference to official guidance regarding the use of a heterologous third dose (e.g. mRNA vaccine),” it said in a statement.“This means that the decision to receive Vaxzevria as a booster must be made in consultation with a medical professional.”Dr Vinod Balasubramaniam, a virologist from Monash University’s Jeffrey Cheah School of Medicine and Health Sciences in Malaysia, said the addition of a third vaccine is particularly important as the world battles the Omicron variant.“It’s important to increase the vaccine portfolio in the fight against COVID-19, in particular against the current highly contagious Omicron variant, a multi-pronged approach is definitely needed for us to win the war,” he <a href="https://www.scimex.org/newsfeed/expert-reaction-tga-provisionally-approves-astrazeneca-boosters-for-ages-18" target="_blank" rel="noopener">said</a>.“Diversifying the vaccine portfolio in including AstraZeneca vaccines as part of the booster dose regimen is important, especially when used as a mix-and-match for individuals who experienced adverse reactions with their primary vaccinations with other types of vaccines.”Dr Andy Files, a senior research fellow at the Menzies Institute for Medical Research within the University of Tasmania, agreed and noted that the mix-and-match approach has been proved as an effective way of protecting people from the virus.“From a basic immunology perspective, swapping vaccines should help to focus the immune response on the SARS-CoV-2 spike protein encoded in the vaccines, rather than the other components of the vaccine, thus providing the intended boost in protection against the coronavirus,” he explained.“The AstraZeneca booster will be most useful for people that had strong side effects to the mRNA vaccines or have histories of myocarditis or pericarditis.”Image: Getty Images

Body

Rich countries donating half their COVID vaccine supply would be a “win-win”

The message emerging from expert dialogue on the trajectory of COVID is increasingly clear: this show won’t be over until the whole world is vaccinated. The appearance of <a href="https://cosmosmagazine.com/health/covid/omicron-update-170122/" target="_blank" rel="noreferrer noopener">Omicron</a> on the scene, with <a href="https://www.sbs.com.au/news/son-of-omicron-victoria-detects-a-handful-of-covid-19-sub-variant-cases/095ee479-723b-40a9-a2ca-77e90968d6e7" target="_blank" rel="noreferrer noopener">son-of-Omicron</a> (the BA.2 sub-variant) hot on its heels, has been a stark reminder that making it through one wave doesn’t mean we’ve weathered the storm – as long as there are under-vaccinated populations, this virus will continue to develop new variants that will sweep across the globe, making vaccine equity crucial to COVID defense.Just how much should we prioritise vaccine sharing over increasing immunity within our own borders? A new <a href="https://doi.org/10.1038/s41562-022-01289-8" target="_blank" rel="noreferrer noopener">modelling study</a> published in Nature Human Behaviour has put firm figures to this tricky question, finding that if high-income countries were to donate up to 46% of their total vaccine supply to low- and middle-income countries, the benefits could include substantial decreases in global mortality and protection against further pandemic waves.Using a mathematical model, the researchers projected the consequences of vaccine inequity over five years, against the backdrop of evolving strains of SARS-CoV-2 and global mobility.The results showed that if we want to get on top of COVID, we’re going to have look beyond short-term immunity gains within our own borders and start playing a globally focused long-game.The model indicated that increasing national vaccination rates through booster programs, such as the controversial <a href="https://cosmosmagazine.com/health/covid/fourth-covid-shot-wont-prevent-omicron-infection/" target="_blank" rel="noreferrer noopener">four-dose regime</a> being rolled out across Israel, does lead to faster declines in mortality in high-income countries in the first year. But these gains are swallowed up by an increasing vulnerability to infection in subsequent years as the global threat of newly emerging strains grows.Conversely, modelling equitable vaccine allocation strategies showed a substantial curbing of the spread of new strains, providing greater benefits to both high-income and low- and middle-income countries.Regardless of where individual countries stand on the ethics of tending to your own flock ahead of assisting disadvantaged global populations, this model makes it clear that allocating nearly half of high-income countries’ vaccine supplies is, over the longer-term, in their own interest.Addressing vaccine equity is a practical but highly effective variant-suppression measure that could be achieved by immediate and more-generous vaccine donations to low- and middle-income countries, but convincing governments to reframe their national COVID strategies in this global light remains a challenge.As of 31 December 2021, more than nine billion COVID-19 vaccination doses had been administered worldwide – but the distribution of these doses remains highly imbalanced. Over 70% of people in high-income countries are now fully vaccinated against COVID-19; in low-income countries, that number is 4%.Organisations such as COVAX, which is co-led by <a href="https://www.gavi.org/" target="_blank" rel="noreferrer noopener" data-type="URL" data-id="https://www.gavi.org/">Gavi</a>, <a href="https://www.who.int/initiatives/act-accelerator/covax" target="_blank" rel="noreferrer noopener" data-type="URL" data-id="https://www.who.int/initiatives/act-accelerator/covax">the WHO</a>, and <a href="https://cepi.net/" target="_blank" rel="noreferrer noopener" data-type="URL" data-id="https://cepi.net/">CEPI</a>, are attempting to tackle the vaccine inequity problem, and announced in January that they had delivered their <a href="https://cosmosmagazine.com/health/covid/billionth-covax-dose/" target="_blank" rel="noreferrer noopener">billionth vaccine dose</a> – an admirable achievement, but well short of their 2 billion dose goal. The organisation cited hoarding and stockpiling by wealthy countries as a key roadblock to their progress. Many high-income countries have access to enough vaccines to vaccinate their populations several times over, leaving some low- and middle-income countries struggling to obtain sufficient supplies to vaccinate their populations even once.But, as the current study makes clear, pandemics pay no heed to borders. Until there is international commitment to global vaccine equity, the waves will continue to crash in.<div id="contributors"><a href="https://cosmosmagazine.com/health/covid/combatting-vaccine-inequity-win-win/" target="_blank" rel="noopener">This article</a> was originally published on <a href="https://cosmosmagazine.com" target="_blank" rel="noopener">Cosmos Magazine</a> and was written by <a href="https://cosmosmagazine.com/contributor/jamie-priest" target="_blank" rel="noopener">Jamie Priest</a>. Jamie Priest is a science journalist at Cosmos. She has a Bachelor of Science in Marine Biology from the University of Adelaide.Image: Getty Images</div>

Body

Restaurant in strife for accepting puppy pics instead of vaccination proof

A restaurant in Canada was ordered to temporarily cease its indoor dining services after it was discovered that customers were being allowed a seat after presenting cute dog photos instead of proof of vaccination against COVID-19 or negative test results, health officials said.Alberta Health Services issued the closure order Friday after it investigated complaints about the Granary Kitchen in Red Deer.Two investigators posing as customers visited the restaurant at different times after providing photos and personal identification to restaurant staff, the agency said in the order.“In both instances, facility staff used a tablet to make it appear as if they were scanning a QR code, when in fact the staff member was presented with a photograph of a dog,” the agency said.“The staff member then proceeded to ask the test shopper for personal identification and offered dine-in services.” The restaurant was ordered to close its indoor dining area and submit a written COVID-19 compliance plan that follows the province’s indoor dining rules.In a Facebook post Friday, the restaurant called the incident “an unfortunate circumstance at our front door which involved one of our underage hostesses”.“We are taking the weekend to retrain and regroup,” the restaurant said.“We look forward to serving you again as soon as we are ready to reopen."In closing we would like to remind everyone of the tremendous pressure being placed on front staff, and please remember to be kind.”Image: Getty

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Could the shingles vaccine lower your risk of dementia?

What’s the difference between ‘strep throat’ and a sore throat? We’re developing a vaccine for one of them

Are you up to date with your COVID, flu and other shots? It might depend on who your GP is

COVID vaccines saved millions of lives – linking them to excess deaths is a mistake

The growing promise of cancer vaccines

AstraZeneca admits to Covid vaccine's deadly side effect

There are new flu vaccines on offer for 2024. Should I get one? What do I need to know?

What are the new COVID booster vaccines? Can I get one? Do they work? Are they safe?

Should I get a flu vaccine this year? Here’s what you need to know

Fran Drescher calls for an end to “bull***t” vaccine mandates

Thousands of Tasmanian devils are dying from cancer – but a new vaccine approach could help us save them

Cruise ships are back and carrying COVID. No, it’s not 2020. But here’s what needs to happen next

Viral infections including COVID are among the important causes of dementia – one more reason to consider vaccination

Vaccine status no longer required

Time to remove vaccine mandates? Not so fast – it could have unintended consequences

Scientists creating inhalable Covid vaccine

All the tunes used to repel NZ anti-vaccine mandate protesters

New booster vaccine approved in Australia

Rich countries donating half their COVID vaccine supply would be a “win-win”

Restaurant in strife for accepting puppy pics instead of vaccination proof

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Could the shingles vaccine lower your risk of dementia?

What’s the difference between ‘strep throat’ and a sore throat? We’re developing a vaccine for one of them

Are you up to date with your COVID, flu and other shots? It might depend on who your GP is

COVID vaccines saved millions of lives – linking them to excess deaths is a mistake

The growing promise of cancer vaccines

AstraZeneca admits to Covid vaccine's deadly side effect

There are new flu vaccines on offer for 2024. Should I get one? What do I need to know?

What are the new COVID booster vaccines? Can I get one? Do they work? Are they safe?

Should I get a flu vaccine this year? Here’s what you need to know

Fran Drescher calls for an end to “bull***t” vaccine mandates

Thousands of Tasmanian devils are dying from cancer – but a new vaccine approach could help us save them

Cruise ships are back and carrying COVID. No, it’s not 2020. But here’s what needs to happen next

Viral infections including COVID are among the important causes of dementia – one more reason to consider vaccination

Vaccine status no longer required

Time to remove vaccine mandates? Not so fast – it could have unintended consequences

Scientists creating inhalable Covid vaccine

All the tunes used to repel NZ anti-vaccine mandate protesters

New booster vaccine approved in Australia

Rich countries donating half their COVID vaccine supply would be a “win-win”

Restaurant in strife for accepting puppy pics instead of vaccination proof ﻿

Restaurant in strife for accepting puppy pics instead of vaccination proof