If a creature that quacks like a duck killed over 1000 children in less than 3 years(1) I would be surprised if people still treated it as a duck.
1) https://data.cdc.gov/NCHS/Deaths-by-Sex-Ages-0-18-years/xa4b...
1) https://data.cdc.gov/NCHS/Deaths-by-Sex-Ages-0-18-years/xa4b...
Kids were relatively resilient from the virus.
Now addressing the logic in your response, are you suggesting we should have similar school shutdown measures for the flu every year? For a similar three year period influenza will kill 400-600 kids.