[nwallin]

The problem is that it's a transmission vector.

If it was observed that, for instance, dogs were a transmission vector of COVID-19 but rarely suffered severe effects, it would be critically important to shut down all the dog parks. Not to protect the dogs, or even the dog owners (in my very limited experience the people who tend to take their dogs to dog parks tend to be younger) but simply to curtail the spread of the disease.

If the schools are open, COVID will be rampant in the larger population, even if few kids are getting seriously ill.