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N95 or KF94? Which mask is best at protecting against COVID-19
The U.S. Centers for Disease Control and Prevention (CDC) has said Americans should wear the most protective mask they can, but stopped short of recommending an N95 or similar face covering.
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Here’s where to look for N95 and KN95 masks in California. Plus, how to spot a fake
The agency recommends different tiers of mask effectiveness in protecting individuals from COVID-19, with N95 masks as the most effective. KF94, KN95, double masks and fitted surgical masks are in ...