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

October 21, 2020 NYT

By BY GINA KOLATA from NYT World https://ift.tt/3jkCx9e

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 sajjad on October 21, 2020 Rating: 5

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