[kruffalon]

Hmm, that's interesting, I thought the causality is that when you're cold your body is busy generating heat so is worse at fighting of infections.

[taneq]

I think it’s more just that you’re inside a lot with other people, easing transmission.

[type0]

that and less humidity in the indoor air, sedentary work doesn't help either, less blood-flow and it's harder for lymphocytes to fight off infections