3 ms·
Right... just as N95 masks were proven against other non-coronaviruses. Of course n95 masks only prevent entry through the mouth and nose, and particularly at
by cbsmith 6y ago
Right... just as N95 masks were proven against other non-coronaviruses.
Of course n95 masks only prevent entry through the mouth and nose, and particularly at the time we had reason to think those were other points of entry. So, saying that they were "proven" to work against SARS-CoV-2 at the time was simply false.