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The C.D.C. updates its definition of ‘close contact’ in relation to infection risk.

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By BY GINA KOLATA from NYT World https://ift.tt/2FTifpY
The C.D.C. updates its definition of ‘close contact’ in relation to infection risk. The C.D.C. updates its definition of ‘close contact’ in relation to infection risk. Reviewed by Anonymous on October 22, 2020 Rating: 5
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