
By BY GINA KOLATA from NYT World https://ift.tt/3jkCx9e
via internal-essential New York Times https://ift.tt/3jkCx9e October 22, 2020 at 05:15AM
The C.D.C. updates its definition of ‘close contact’ in relation to infection risk.
Reviewed by Imran Rk
on
October 21, 2020
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