These are kids who will never pay taxes. They’ll never hold a job. They’ll never play baseball. They’ll never write a poem. They’ll never go out on a date. Many of them will never use a toilet unassisted,

Robert F. Kennedy Jr., the Health and Human Services secretary, has spoken several times in April about plans to find the origins of autism.

Kennedy, Hotez says, made a “false statement” in claiming that the scientific community denies that there are any environmental factors at play. “I’ve said to RFK Jr. that there could be an environmental component, but not vaccines, because autism occurs in fetal brain development well before kids ever see vaccines.”