Tag Archives: Before

Five years before a vaccine can ‘hold the line’ against Covid variants, England’s medical chief says

Covid vaccinator, Petra Moinar, prepares syringes with the AstraZeneca vaccine before it is administered at Battersea Arts Centre on March 8, 2021 in London, England. Chris J Ratcliffe | Getty Images News | Getty Images LONDON — England’s top medical officer has warned that the coming winter will continue to be difficult for the country’s… Read More »

Novel coronavirus circulated undetected months before first COVID-19 cases in Wuhan, China

Using molecular dating tools and epidemiological simulations, researchers at University of California San Diego School of Medicine, with colleagues at the University of Arizona and Illumina, Inc., estimate that the SARS-CoV-2 virus was likely circulating undetected for at most two months before the first human cases of COVID-19 were described in Wuhan, China in late-December… Read More »