[fmajid]

The studies are in villages, but the real concern is dense urban environments like New York (or Dhaka) where people are tightly packed together and at risk of contagion. I'm pretty sure masks make little difference in Wyoming either, where the population is 5 people per square mile.

[asdff]

Whats more important than population density is activity. A New Yorker who is mostly keeping to themselves and wearing a mask is unlikely to get the virus. A Wyoming native attending church service maskless and singing indoors for an hour is more likely to get the virus.