Health Secretary Robert F. Kennedy, Jr. has pledged to conduct transparent and quick studies to determine the cause of Autism Spectrum Disorder (ASD), with preliminary findings expected in six

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.”

RFK Jr., the head of HHS, said the agency is taking on a "massive testing and research effort" to determine the cause of autism. Here's what to know.