As health officials scramble to minimize spread of the highly contagious Omicron variant, many experts have recommended that people switch from cloth or surgical masks to more-protective N95 and KN95 ...
SAN FRANCISCO -- Doctors say any mask is better than no mask, but cloth masks may not be getting the job done well enough against omicron. As cases surge, many are turning to N95 or KN95 masks to ...
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