So what's the recorded percentage of people working with & near CV patients in hospitals, healthcare facilities, etc that have correctly worn N95 masks and associated PPE have contracted the disease?
Very 1 sided. This only entails people who've basically shown symptoms, tested negative for the flu and finally tested positive for covid19.
I think we'll all be surprised when we see how many people test positive, but never became ill enough to get tested or never showed any symptoms at all.
I realize your question is about healthcare workers so only the latter in my previous comment applies since we'd hope they aren't knowingly going to work sick.