[qiqing]

Some cultures have normalized this (good hygiene and mask wearing when sick) since the 1917 pandemic.

I'm cautiously optimistic that it can take hold in the West this time around.

[throwaway8581]

Is there any evidence that respiratory viruses spread less readily in those countries in a regular year?

[SketchySeaBeast]

At least in part, yeah. I know I will. And every bit helps.