COVID-19 shots might be tweaked if variants get worse

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Feb 16 2021	COVID-19 shots might be tweaked if variants get worse
The makers of COVID-19 vaccines are figuring out how to tweak their recipes just in case the shots need an update against worrisome virus mutations


Source:https://abcnews.go.com/Technology/wireStory/covid-19-shots-tweaked-variants-worse-75905132

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