> I think heat with humidity are more likely to dampen the spread compared to just heat

That's odd to me because I associate warm and wet with uncleanliness and festering cesspools.

This outbreak has made me realise how I've gone my whole adult life without knowing some basic things about bacteria and viruses. Like, I never knew about how soap dissolves the virus's outer coating...

Anyway apparently hot and wet is good for bacteria, but cold is better for viruses. The bit that made it click for me is that viruses aren't metabolising anything outside of the host-cell, so the best a virus can hope for is to not be destroyed -- and cold is a better preservative.

I'm still not sure whether hot and humid is better than hot and dry though? I think I read that hot and dry is worse, because it increases evaporation.

> I never knew about how soap dissolves the virus's outer coating

That's not true for every type of virus, but it is true for corona viruses.

Humidity makes flu less contagious, likely because something about the wet heavy air deactivates airborne viruses.

https://www.google.com/amp/s/www.livescience.com/amp/27533-f...

Welcome to living anywhere near the great lakes in summertime.

Qatar is more humid than people think for being a desert country, because it is a peninsula in the gulf. As I write this, it's about 70% relative humidity.

Dunno about Qatar but in Abu Dhabi humidity has reached 100%

Relative