2 ms·
Surgical and N95 masks were proven against other coronaviruses.
by pseudalopex 6y ago
Surgical and N95 masks were proven against other coronaviruses.
- cbsmith 6y agoRight... 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.