Now that the kids are back at school, SIL has said her kids must isolate from both sets of grandparents in case they give them Covid picked up at school, and this must continue until a vaccine is found. All 4 grandparents are over 70 but healthy, no health conditions to speak of. My parents are particularly upset and don't understand it. I don't get it either and don't intend to stop them seeing my kids.
Are we missing something?