Both are Extremely rare extremely rare with are with out covid
multisystem inflammatory syndrome in children (MIS-C). This syndrome is rare, and most children who have it eventually get better with medical care. Though children of all ages can become sick with coronavirus disease 2019 (COVID-19), most kids who are infected typically don't become as sick as adults do. Some children who have an active infection with the virus that causes COVID-19 might not show any signs or symptoms at all.
Still, you may have heard about a serious inflammatory syndrome in children, including some teenagers, that appears to be linked to COVID-19. It's called multisystem inflammatory syndrome in children (MIS-C). This syndrome is rare, and most children who have it eventually get better with medical care.
https://www.mayoclinic.org/diseases...depth/mis-c-in-children-covid-19/art-20486809