Face Masks, Tune-up your protection, Nov 2021 (use KN95 and N95 masks) from n95 masks at amazon Watch Video
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Description: I replaced this video with an updated version, as of 12 Dec 2021.nIt shows my best recommendations for mask use.nn+++nAlso see below data about masks.n+++nThe BELOW article seems to conclude that N95 and KN95 masks are very close to equivalent in filtration.nhttps://smartairfilters.com/en/blog/whats-the-difference-between-n95-and-kn95-masks/nWhat’s the Difference Between N95 and KN95 Masks? (2020-04-20)Thomas Talhelmn+++nEp 56 Osterholm Update COVID 19: Episode 56: From Checkers to ChessnM
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