Tag Archives: COVID vaccines

COVID vaccines: why second boosters are being offered to vulnerable people in the UK – but not young and healthy people yet

nednapa/Shutterstock Rebecca Aicheler, Cardiff Metropolitan University Until recently, the UK government limited a fourth dose of the COVID vaccine to people with severely weakened immune systems over the age of 16. But, following a resurgence of COVID cases in the UK, the government has followed some other countries such as Israel, Germany and Sweden, and expanded the eligibility for a …

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Hybrid immunity: a combination of vaccination and prior infection probably offers the best protection against COVID

Kateryna Kon/Shutterstock Grace C Roberts, University of Leeds and Lena Glaser, Queen’s University Belfast When we’re exposed to a pathogen such as a virus, our immune system identifies it as a foreign invader and mounts an attack. This ultimately results in the formation of antibodies which can neutralise the invading pathogen next time we encounter it. It’s a complex process. …

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Are new COVID variants like Omicron linked to low vaccine coverage? Here’s what the science says

Shutterstock Jennifer Juno, The Peter Doherty Institute for Infection and Immunity and Adam Wheatley, The University of Melbourne The emergence of a new SARS-CoV-2 variant of concern, Omicron, has reignited global discussions of vaccine distribution, virus mutation, and immunity against new virus strains. Some experts have suggested the emergence of a new strain could be a result of low levels …

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Is it the adenovirus vaccine technology, used by AstraZeneca and Johnson & Johnson, causing blood clots? There’s no evidence yet

Kylie Quinn, RMIT University This week, US health authorities recommended pausing the rollout of the one-shot Johnson & Johnson/Janssen COVID-19 vaccine while investigations into exceptionally rare blood clots take place. Six women suffered blood clots out of nearly seven million doses administered. The J&J vaccine uses broadly similar vaccine technology as the AstraZeneca vaccine, known as adenoviral vectors, which has …

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COVID-19 vaccines are a victory for public research, not ‘greed’ and ‘capitalism’

David Whyte, University of Liverpool Boris Johnson, the UK prime minister, reportedly attributed the success of the COVID-19 vaccines to “capitalism” and “greed”. But he is wrong – the idea that private ingenuity and naked competition produced the vaccines is a complete fantasy. Before COVID-19, the vaccine market was notoriously sluggish, taking between five and 15 years to develop a …

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COVID-19 vaccines are highly effective for pregnant women and their babies – new study

New infectious diseases come with all kinds of risks for women during pregnancy and childbirth. https://www.pexels.com/, FAL Catherine Thornton, Swansea University and April Rees, Swansea University COVID-19 vaccines are proving highly effective in pregnancy, according to a newly published study in the American Journal of Obstetrics and Gynecology. It has also found that mothers who have been vaccinated are passing …

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Coronavirus: will immunity rapidly fade or last a lifetime?

Luke O’Neill, Trinity College Dublin The COVID vaccines are working. Data from Israel and Scotland shows that they are protecting people and may also be decreasing the spread of the SARS-CoV-2 virus. If it all holds up, people will be protected from severe disease, the amount of virus will progressively decrease, and we can truly plan for a way out …

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Yes, export bans on vaccines are a problem, but why is the supply of vaccines so limited in the first place?

Cecilia Fabiano/AP Deborah Gleeson, La Trobe University News of the blockage of a shipment of 250,000 COVID-19 vaccines from Europe to Australia has caused concern and outrage. The immediate problem will probably be quickly solved through diplomatic channels. Even if it is not, onshore manufacturing of the AstraZeneca vaccine will soon make up for any shortfall in Australia’s vaccine supply. …

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COVID-19 vaccines: how and when will lower-income countries get access?

Rory Horner, University of Manchester COVID-19 vaccination programmes are gathering pace in high-income countries, but for much of the world, the future looks bleaker. Although a number of middle-income countries have started rolling out vaccines, widespread vaccination could still be years away. The first two COVID-19 vaccines authorised in Europe and the United States – made by Pfizer/BioNTech and Moderna …

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