Study Warns RFK Jr.'s Measles Vaccine Change Endangers Vulnerable Toddlers

A new study warns that a change to measles vaccine policy under Health Secretary Robert F. Kennedy Jr. could harm some of the most vulnerable toddlers, who rely on a combination shot for protection. Researchers say the shift risks leaving young children exposed during a period of rising measles activity, sharpening an ongoing debate over the administration's approach to childhood immunization.