@Infoseepage Two of my infections I'd been in an at least moderately busy place the week before (although one of them with an FFP2 mask). The other one I hadn't really ever seen more than one person at a time. Also had countless close interactions with people who (turned out to be/)were positive and didn't get it. Not sure it's very deterministic. If I hadn't tested so often I would solidly believe I'd never been infected 🙂.