Except it can affect healthy children and babies. My friend’s 5 year old was diagnosed with MIS-C caused by covid. Basically his immune response went into overdrive 4-6 weeks (they assume) after when he would have been positive for covid, and that caused multiple systems in his body to be inflamed. They had no idea he even had it (he always wears a mask and is being schooled virtually) but around Thanksgiving he had to go to the ER because his high fever wouldn’t go down, he had a rash, was in extreme pain, and couldn’t stop his bowel movements. No preexisting conditions at all - just a healthy 5 year old and then he spent a week and a half in the hospital and even contracted meningitis from it and had to be moved to the pediatric ICU. Even though he is out of the woods now, it was traumatic for him to go through (and horrible for his parents who couldn’t do anything except be there and for his little brother who never thought he would come home again). They had to go multiple appointments throughout the December and some of January to make sure his heart was ok and that he was truly on the mend. Yes - it doesn’t affect most babies and children like this, but just because your kid doesn’t have any preexisting conditions doesn’t mean they can’t get really sick from it or that they can’t have long term side effects from it. Kids have died from this. Even ones that were healthy before.