As CDC Advisers Vote Against MMRV Vaccine For Kids Under 4, Here's What Parents Should Know

U.S. vaccine advisers on Thursday, September 18, 2025, moved to change how one of the country’s key childhood vaccines is used, marking another step in Health Secretary Robert F. Kennedy’s broader push to reshape national immunization policy.The advisory panel to the Centers for Disease Control and Prevention (CDC) recommended that parents should not have the option of giving children under 4 the combined measles-mumps-rubella-varicella (MMRV) shot. A separate vote on hepatitis B vaccines for newborns, which was expected the same day, has been pushed to Friday. That decision could alter decades of U.S. vaccine policy that has successfully kept annual hepatitis B cases in babies down to only a few dozen.With these shifts under way, here’s what parents should know about their children’s vacc