New Coronavirus Variants Appear To Have Evolved In The U.S.
Scientists are evaluating domestic COVID-19 variants to see whether they pose a new threat, as public health experts warn the U.S. needs better surveillance to spot mutations and slow their spread.
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Via https://www.npr.org/2021/02/16/968252558/new-coronavirus-variants-appear-to-have-evolved-in-the-u-s
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