I suspect there's at least one thing that Antarctica does worse than everyone else: air supply. I suspect they recycle their air really heavily, to minimize the energy cost of heating up outside air. But that matters for the spread of something like Covid.

I'm guessing. I don't know. If anyone has actual information, feel free to jump in...

Well that's generally how heat exchangers work, for that reason, even in temperate climates.

I know there are some standards for recycling air in public buildings such as schools, and air born sickness seems like something they would have to worry about normally, so I would imagine they were pretty prepared for that aspect

I skimmed this but didn't really see much past the actual heat source https://www.cibsejournal.com/general/life-support-keeping-sc...