DP for those who think Kids are not contagious, a nephew in1st grade caught it from his rebbi and now a few family members seem to have caught from him.
I have a 9 year old relative who tested positive after being exposed to another 9 y/o who’s family currently has it, and now this relative’s other 9 y/o friend (who he has been playing with since) just went for testing after developing symptoms.
The rest of the child’s family who have no antibodies but are being careful have not had any symptoms and tested negative several times since. They are even careful in the house.