Vaccine Policy, Emerging Infectious Diseases, and Preparedness Resources
On August 10, President Donald Trump signed Executive Order 14420 (EO-14420), which recommends changes to childhood vaccine practices, including administration of measles, mumps, and rubella (MMR) as separate vaccines when available. Because immunization requirements are established under state law, EO-14420 does not require states to modify their vaccination requirements. The order acknowledges state authority in...
August 24, 2026