I just got back from ER for an issue not related to COVID-19.
I had a N95 mask on and they took my temp which was normal. Then I was told that I didn’t need my mask beyond the checkpoint because everyone at that point had been tested. Except all the healthcare workers beyond the checkpoint were wearing masks. WTF?
ER worker masks are rated against body fluids - hardware store ones are not. People in ERs tend to, er, exude all manner of body fluid and in times of heavy ER traffic, staff will often wear those anyway. Far more and far worse than COVID-19 can be transmitted by body fluids.
https://multimedia.3m.com/mws/media/1794572O/surgical-n95-vs-standard-n95-which-to-consider.pdf
“Except all the healthcare workers beyond the checkpoint were wearing masks. WTF?”
Because they are exposed to stuff all day long, different stuff, not just CCP-19. They are the front lines. Wouldn’t want them to get you sick, and especially not each other.