Persistent symptoms following SARS-CoV-2 infection in children and young people
journalofinfection.com
journalofinfection.com
It's important to understand this first.
Then, the numbers of CHILDREN who SELF-IDENTITY symptoms report single digits of lingering symptoms 125 days after infection.
Given the nature of children, their worried parents, and their susceptibility to a variety of factors, I would consider this study proof that Covid doesn't harm children, and is in fact harmless to them by being pretty darn close to the margin of error, and ascribing the rest to self reporting.