When I got my Moderna vaccine, the questionnaire asked if I had been infected within the past 90 days. The antibodies from that either could have made it ineffective or heightened my chance of a negative reaction to the vaccine, I forget which. I told the doc that I had a positive diagnosis and we had to go back on a calendar to make sure before she felt comfortable vaccinating me.

I bet vaccine approval is going to come within that window for kids who get infected going back to school. An initial surge to get them all vaccinated ASAP, partial knowledge of infection history because it presents more mildly and there are lots of other respiratory viruses that kids get, staged exposure for those kids as classmates come back from sick days.