> if masks weren’t working at all, we’d see a lot of medical professionals catching covid. A lot lot more than we see now.
Post hoc, ergo propter hoc.
"I am carrying my anti-tiger rock. I have not encountered any tigers today. Therfore, my anti-tiger rock is working."
You realize that medical professionals are almost universally vaccinated, have in large number had the virus already, and take other precautions, right?
Whilst you have a good point for the present, it is noteworthy that medical professionals working in covid wards (and so the ones with FFP2/equivalent or better) had, in the studies I have read, consistently lower rates of infection than even other hospital workers (with only surgical masks) during the first wave.
I recall seeing studies from the UK and US showing this, and possibly other countries.
Post hoc, ergo propter hoc.
"I am carrying my anti-tiger rock. I have not encountered any tigers today. Therfore, my anti-tiger rock is working."
You realize that medical professionals are almost universally vaccinated, have in large number had the virus already, and take other precautions, right?