I think that stat came from a chart in this article https://yourlocalepidemiolog... | Hacker News

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larubbio on Jan 12, 2022 | parent | context | favorite | on: Switching to an N95 mask gives a 75x boost in Covi...

I think that stat came from a chart in this article https://yourlocalepidemiologist.substack.com/p/a-quick-note-...

paulcole on Jan 12, 2022 [–]

Also this one: https://www.axios.com/n95-mask-protection-covid-958039c9-07f...

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