Tag Archives: COVID-19 vaccines

Will omicron – the new coronavirus variant of concern – be more contagious than delta? A virus evolution expert explains what researchers know and what they don’t

The omicron variant possesses numerous mutations in the spike protein, the knob-like protrusions (in red) that allow the virus to invade other cells. Juan Gaertner/Science Photo Library via Getty Images Suresh V. Kuchipudi, Penn State A new variant named omicron (B.1.1.529) was reported by researchers in South Africa on Nov. 24, 2021, and designated a “variant of concern” by the …

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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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Novavax COVID vaccine is nearing approval – but what impact will it have?

oasisamuel/Shutterstock Michael Head, University of Southampton The pandemic has been rumbling on for two years and is probably going to rumble on for years to come. And despite recent excitement about new drugs to treat COVID, it’s still vaccines that will underpin each country’s route out of the pandemic. Immunisation has proven a highly effective way of stopping people from …

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Want to know about vaccine rollouts in Africa? Click on a country here and find out

Shutterstock Catherine Kyobutungi, African Population and Health Research Center There has been a lot of focus on COVID-19 vaccine inequalities between high-income and low- and middle-income countries. For instance, it is estimated that up to 70% of all vaccines to be produced in 2021 were pre-booked by a handful of countries. This has caused severe bottlenecks in vaccine supply to …

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Q+A: COVID vaccine boosters – who will receive them and why are they being given?

ShotPrime Studio/Shutterstock Sarah Pitt, University of Brighton After consulting its vaccine advisers, the UK government is launching its much-discussed COVID-19 vaccine booster programme. From the week beginning September 20 2021, a third dose will be offered to all people who were prioritised in the first wave of the UK’s vaccine rollout. This includes all residents and staff of care homes, …

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How will the COVID pandemic end?

Paul Hunter, University of East Anglia After over 18 months of this pandemic, with the social distancing, mask wearing and on-off lockdowns, what we all want to know more than anything else is when it will all be over and how it will end. While nothing is certain, we have a lot of evidence on which to build some realistic …

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The impact of COVID-19 has been lower in Africa. We explore the reasons

International efforts should prioritise equitable access to vaccines. Immanuel A.Afolabi/Majority World/Universal Images Group via Getty Images Alex Ezeh, Drexel University; Michael Silverman, Western University, and Saverio Stranges, Western University There’s been an increase in COVID-19 deaths across Africa since mid-July 2021. But the impact of the pandemic in sub-Saharan Africa remains markedly lower compared to the Americas, Europe and Asia. …

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