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COVID-19 vaccines may be tweaked if emerging coronavirus variants worsen, spread


COVID-19 vaccines may be tweaked if emerging coronavirus variants worsen, spread
The WHO and FDA are looking to the global flu vaccine system to make decisions around the COVID-19 shots.
The Associated Press
February 16, 2021 09:54:42 IST
Russian s Sputnik V COVID-19 vaccine is also under WHO s pre-approval process. Image: RDIF
The makers of COVID-19
vaccines are figuring out how to tweak their recipes against worrisome virus mutations and regulators are looking to flu as a blueprint if and when the shots need an update.  It’s not really something you can sort of flip a switch, do overnight, cautioned Richard Webby, who directs a World Health Organization flu center from St. Jude Children’s Research Hospital. Viruses mutate constantly, and it takes just the right combination of particular mutations to escape vaccination. But s ....

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