I've been wondering this since the beginning, as a parent of a relatively small child in preschool. I've had one prediction all along, which is that parents of

I've been wondering this since the beginning, as a parent of a relatively small child in preschool. I've had one prediction all along, which is that parents of small children would probably also have lower rates of symptomatic disease, lower severity, etc. than matched controls, because they'd also be exposed to prexisting coronaviruses and therefore have some cross-immunity. You could probably extend this to other groups too. I admit it might be totally wrong but it seems straightforward to test with the right data, and if it were wrong that would also be interesting.