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

NYT 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.

Dipraj Sarkar 5:05 PM

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

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