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President Donald Trump signed an executive order on August 10 that identifies 11 core childhood vaccinations against the most serious diseases and calls for the measles, mumps and rubella vaccine to be split into three separate shots given at different times, the White House said in a fact sheet accompanying the action. Trump told reporters in the Oval Office that children received far fewer vaccines decades ago when people were healthier and that current autism rates were not observed then, according to a BBC News report on the event. The order directs federal health agencies to review and update recommendations in line with practices from peer developed countries while preserving access to available vaccines.
Health and Human Services Secretary Robert F Kennedy Jr stated that the proposed changes aimed to give parents greater choice rather than prohibit access to childhood vaccines. A White House assessment found that the United States recommends more childhood vaccines than any peer nation and more than twice as many doses as some European countries. The executive action also calls for development of alternatives to aluminium in vaccines and testing of their safety and effectiveness.
Centers for Disease Control and Prevention data show 2,465 confirmed measles cases in the United States so far in 2026, a total that has already surpassed all of 2025 and marks the highest annual figure since 1991. The American Academy of Pediatrics president Andrew Racine called the order disheartening and dangerous, noting in a statement that it arrives as measles cases reach a 35-year high and children prepare to return to school. Racine added that no new evidence justifies the changes and that delaying or skipping shots is risky.
A 2014 meta-analysis published in the journal Vaccine reviewed five cohort studies involving more than 1.2 million children and five case-control studies with more than 9,000 children, concluding that vaccines, their components and the MMR shot were not associated with autism. The Centers for Disease Control and Prevention has stated there is no published scientific evidence showing any benefit to separating the MMR vaccine into individual shots and that receiving the vaccine is much safer than contracting measles, mumps or rubella. Senator Bill Cassidy, a physician and chairman of the Senate health committee, wrote on social media that the president lacks the expertise for these changes and that vaccines are overwhelmingly safe, effective and do not cause autism.
The American Academy of Pediatrics continues to recommend immunizations protecting against 18 diseases in its 2026 schedule, diverging from the reduced federal list and maintaining endorsements from 12 national health organizations and 28 states. Public Authority for Civil Information figures and similar global health data underscore that vaccination schedules are timed to work best with children’s immune systems and periods of greatest vulnerability to disease. The federal government does not hold authority to enforce the new recommendations because requirements for school attendance are determined at the state level.
Trump administration officials have noted that the prior schedule included as many as 72 shots when counting combination vaccines and annual doses for flu and COVID-19, though vaccine experts describe that figure as inflated. The order builds on an earlier May 2026 directive to realign the schedule with best practices from peer nations while protecting religious freedoms and parental rights, according to White House records. Multiple international studies, including a 2019 Danish analysis of 657,461 children, have similarly found no support for a causal link between the MMR vaccine and autism.
