Danish Study Questions Use of Masks to Protect WearersNYT > U.S. News

Masks prevent people from transmitting the coronavirus to others, scientists now agree. But a new trial failed to document protection from the virus among the wearers.Masks prevent people from transmitting the coronavirus to others, scientists now agree. But a new trial failed to document protection from the virus among the wearers.NYT > U.S. News

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