In a move that has drawn widespread condemnation from the scientific and medical communities, Health and Human Services (HHS) Secretary Robert F. Kennedy Jr. abruptly dismissed all 17 members of the Centers for Disease Control and Prevention’s (CDC) independent Advisory Committee on Immunization Practices (ACIP) on Monday. He swiftly replaced them with eight new appointees—many of whom are known for their criticism of vaccines and for promoting misinformation.