Nothing, obviously, as by the time you realise you have COVID, you would almost certainly have already have infected your child (unless you somehow had no contact with it for the previous few days). Odds are they'd be fine and not even show symptoms, but the last thing you do is take the potentially infectious child to someone else, obviouslyputting it out there...I dont have kids btw
But if you and your partner were both covid, but your kids werent...
what would you do?