This is among the crucial questions - what is minimum effective filtration/fit for ~definitive protection? - of the aerosol debate
If less than N95 is effectively similar, that opens up many low-hanging possibilities for scalable highly protective masks for the publichttps://twitter.com/j_g_allen/status/1293298339694481414 …
Still hard to extrapolate from hospitals to community. On the one hand, lots of sick people. Sometimes aerosol generating procedures. On the other hand, everyone masked up, sometimes very much so, plus a lot of ventilation measures already in place.
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Agreed. I have been in a ton of aerosolizing procedures/scenarios with covid patients and I was always wearing appropriate PPE and as far as I know I haven’t gotten it yet. Many times the patients were not in negative pressure rooms because in a city hospital those are limited
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