N=1, but childcare has been the biggest avenue of infections I've seen here in Germany. Basically every childcare of colleagues with children has been shut down at one point in October/November (when the numbers started rising here) due to infections among the children. In most cases one or multiple of the families have been completely infected as a result of that, and I guess the only reason it hasn't spread around the workplace is due to good precautions.

It's the reason we aren't sending our kid to daycare, despite the private facilities here in Poland staying open for a large part of this pandemic.

I have exacty the same suspicion. Cases started spiking exactly 3 weeks after we opened schools after summer break in Poland, and did not start falling down until we closed down schools again.

N=1 as well, but we haven't seen a single case of it. In the area, I'm aware of one school that had a case of COVID a few months ago, and our local one - in which our child is nominally enrolled, but isn't attending physically - lasted with zero cases until two weeks ago.

Same in my family. Kid was fine, grandparents just couldnt live without seeing her weekly (slaps forehead :/) so got infected (one critical condition at one point), so did the parents.