I mention the kid only because it was the the main change to sickness exposure. I suspect public transport and office work would have been enough. Given what w

I mention the kid only because it was the the main change to sickness exposure. I suspect public transport and office work would have been enough. Given what we could read about covid, exposure is a combination of length and probability of sharing air with sick people. Public transport is a short exposure with many people, evening with friend, long exposure, but less people. Kid: well for all the sickness they have bad immunity for, and the long length of exposure, you have good chances ti get something that you never had or have no immunity for anymore. My experience is that I now use public transport every day and I have two kids, I get sick time to times, but much less than a few years ago.