How switching to an N95 mask gives a 75x boost in COVID protection ...

2023-06-03 20:23:58

How switching to an N95 mask gives a 75x boost in COVID protection https://www.axios.com/2022/01/11/n95-mask-protection-covid

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Morgan Fairchild on Nostr: How switching to an N95 mask gives a 75x boost in COVID protection ...