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How well do face masks protect against COVID-19?
The virus that causes COVID-19 spreads mainly through the air when a person coughs, sneezes, sings, talks or breathes. Virus particles can drift in the air and be inhaled, especially in crowded places ...
The case is growing stronger that Americans should wear face covers when they venture outdoors, but N-95 and surgical masks, are strongly discouraged for general use. Dr. Patel warns, "for every N-95 ...
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