The BA.2 subvariant of Omicron accounts for over half of new U.S. coronavirus cases, the C.D.C. estimates.
By BY ADEEL HASSAN from NYT Health https://ift.tt/lJMSR6f
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The BA.2 subvariant of Omicron accounts for over half of new U.S. coronavirus cases, the C.D.C. estimates.
![The BA.2 subvariant of Omicron accounts for over half of new U.S. coronavirus cases, the C.D.C. estimates.]()
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