Why most of us should be wearing N95 masks
1/21/22
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from The Washington Post,
1/20/22:
N95 respirators have long been the best disposable face coverings for protection against airborne viruses, but until recently, they were scarce.
When worn properly, N95s can filter out at least 95 percent of particles in the air, including the virus that causes covid-19. Only pricey air-purifying respirators or hazmat suits offer better protection.
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