The Executive Office of the President of the United States has signed a directive revising the recommended national immunization schedule for children. Under the new policy, the list of universally recommended childhood vaccines is reduced from 18 to 11. Key changes include removing routine vaccinations against hepatitis B, COVID-19, and seasonal influenza from the standard mandate for all children.

Additionally, the executive order replaces the combined MMR (measles, mumps, and rubella) vaccine with three separate monovalent injections, which are recommended to be administered during distinct medical visits. While supporters argue the policy grants parents greater flexibility and minimizes simultaneous vaccine exposure, public health organizations have expressed concern regarding potential declines in herd immunity and overall coverage rates.