Mutations may delay a return to normal as faster-spreading strains could make people sicker or render vaccines less effective
  • The Wall Street Journal
  • Jan 25, 2021

New Coronavirus Variants Complicate the Battle Against the Pandemic - The Wall Street Journal

The emergence of new variants of the virus that causes Covid-19including one in the U.K. that British officials say could be more deadly than earlier versionssignals a future in which health authorit… [+1302 chars]

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