Will Shortened Isolation Periods Without Testing Spread the Virus?

Without rapid testing, some experts fear new U.S. guidelines may mean infected people leave isolation while still contagious. The C.D.C. director said masking was a better option.,Without rapid testing, some experts fear new U.S. guidelines may mean infected people leave isolation while still contagious. The C.D.C. director said masking was a better option.

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