I am a London-based reporter for Forbes covering breaking news. Previously, I have worked as a reporter for a specialist legal publication covering big data and as a freelance journalist and policy analyst covering science, tech and health. I have a master’s degree in Biological Natural Sciences and a master’s degree in the History and Philosophy of Science from the University of Cambridge. Follow me on Twitter @theroberthart or email me at [email protected]
People who have received both doses of a Covid-19 vaccine are half as likely to be infected with the coronavirus than those who have not been vaccinated, according to a new
led by researchers at Imperial College London, though the scientists warned a new vaccine targeting the infectious delta variant may be needed to combat concerns over vaccine efficacy.... [+]Three times as many unvaccinated people tested positive for Covid-19 than those who had not been vaccinated, the REACTfound, with all positive samples analyzed indicating an infection with the delta Covid-19 variant.
Once other factors are taken into account, the study, which is based on data from over 98,000 swab tests taken between June 24 and July 12 and has not yet been peer reviewed, indicates full vaccination halves the risk of catching Covid-19. Fully vaccinated people who were infected with the virus tended to have less severe illness than unvaccinated people and seemed to have smaller amounts of virus in samples, the researchers added, meaning they may be less likely to pass it on if they are infected.
Professor Paul Elliott, director of the research program running the study, said the findings confirm “previous data showing that both doses of a vaccine offer good protection against getting infected,” but show there “is still a risk of infection among the fully vaccinated.”
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