The US Centers for Disease Control and Prevention (CDC) updated its vaccine safety page to suggest a possible link between vaccines and autism, influenced by Robert F. Kennedy Jr. and the US Secretary of Health and Human Services. This update deviated from decades of scientific consensus and omitted new research, instead citing an ongoing investigation and a political agreement with Senator Bill Cassidy. Medical experts and organizations criticized the CDC for bypassing scientific review, warning that the change could harm childhood immunizations and public trust.