Which masks protect against delta COVID-19 variant?...

Fox News | 2021-07-27 17:55 UTC

The quality of the mask does matter. So if you can get your hands on a KN95 or N95 mask, that’s going to afford you a lot more protection." The agency also warns that about 60% of KN95 masks in the U.S. are counterfeit, and do not meet National Institute for Occupational Safety and Health (NIOSH) standards.

By Anonymous Submission on 2021-07-27 18:10 UTC
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