Trump signs executive order to reduce recommended childhood vaccines from 18 to 11

President Donald Trump signed an executive order on August 10, 2026, to overhaul the U.S. childhood immunization schedule, reducing universally recommended vaccines from 18 to 11 and recommending that the combined MMR vaccine be split into three separate shots. The order, which mirrors a previously blocked plan by Health Secretary Robert F. Kennedy Jr., was heavily criticized by medical experts, including the American Academy of Pediatrics and Republican Senator Bill Cassidy, who warned it lacks scientific backing, could cause dangerous immunization delays, and relies on debunked claims linking vaccines to autism.

Trump childhood vaccine executive order

• ▪The executive order directs the Justice Department to challenge state vaccination laws that conflict with parental authority, religious freedom, disability accommodations, and equal protection.
• ▪The executive order advises states with school vaccine mandates to consider updating their laws to reflect the administration's preferred schedule of 11 recommended immunizations.
• ▪President Donald Trump signed an executive order on August 10, 2026, backing a major overhaul of the U.S. childhood immunization schedule to reduce the number of universally recommended vaccines from 18 to 11.
• ▪The executive order recommends that childhood immunizations be administered at separate medical visits to the maximum extent feasible.
• ▪The executive order recommends that vaccines for COVID-19, rotavirus, influenza, hepatitis A, hepatitis B, and bacterial meningitis be administered through shared clinical decision-making.

RFK Jr. vaccine schedule overhaul

• ▪Health and Human Services Secretary Robert F. Kennedy Jr. stated that the Advanced Research Projects Agency for Health is preparing a major initiative focused on the foundational causes and biology of autism.
• ▪The executive order mirrors childhood vaccine schedule changes previously advanced by Health and Human Services Secretary Robert F. Kennedy Jr. in January 2026, which were later blocked by a federal court.

MMR vaccine splitting recommendation

• ▪The executive order recommends splitting the combined measles, mumps, and rubella (MMR) vaccine into three separate shots delivered at separate medical visits.
• ▪The executive order tasks Health and Human Services Secretary Robert F. Kennedy Jr. with developing options within 90 days to make separate measles, mumps, and rubella shots available.
• ▪There are currently no licensed single-antigen measles, mumps, or rubella vaccines available on the market in the United States.

Medical expert criticism

• ▪The American Academy of Pediatrics, led by President Dr. Andrew Racine, criticized the executive order as dangerous, disheartening, and not based on gold-standard science.
• ▪Vaccine manufacturer Merck stated that there is no published scientific evidence showing any benefit to splitting the combination MMR vaccine, and that doing so could lead to delayed or missed immunizations.
• ▪The World Health Organization defended science-based childhood immunization schedules, stating that recommendations are based on more than 60 years of research by national authorities and independent expert groups.
• ▪Republican Senator Bill Cassidy of Louisiana, a physician who chairs the Senate health committee, condemned the executive order as wrong, stating that the president lacks the expertise to make these changes.

Vaccine-autism claims debunked

• ▪President Donald Trump repeatedly suggested a link between childhood vaccines and rising rates of autism during the signing of the executive order on August 10, 2026.
• ▪The American Academy of Pediatrics stated that receiving multiple vaccines does not overwhelm a child's immune system, and that modern vaccines target fewer antigens than older versions.
• ▪Dozens of high-quality studies encompassing data on millions of children, including a 2019 Danish study of 657,461 children, have found no evidence linking childhood vaccines to autism.

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