[REVISION HISTORY]

Trump administration reforms childhood vaccine schedule

Updated 45 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-19 16:17 UTC → 2026-09-22 07:30 UTC · added ~~removed~~

In August 2026, the Trump administration overhauled the federal childhood vaccination schedule through an executive order titled ‘Delivering Gold Standard Childhood Vaccine Recommendations For Americans.’ Supported by Health and Human Services Secretary Robert F. Kennedy Jr., the order reduces the number of recommended core vaccinations from 18 to 11. The new universal list includes protection against measles, mumps, rubella, diphtheria, tetanus, pertussis, polio, Haemophilus influenzae type b, pneumococcal disease, human papillomavirus (HPV), and varicella. Other vaccines, such as those for hepatitis A and B, meningococcal disease, rotavirus, seasonal influenza, and COVID-19, are reclassified for ‘at-risk groups’ or ‘joint clinical decision-making.’ The administration cited Denmark as a model for this approach. A central component of the directive is the recommendation to split the combined measles, mumps, and rubella (MMR) vaccine into three separate shots. In September 2026, President Trump ~~proposed further changes, suggesting~~ expanded these proposals, announcing that the White House would demand vaccine manufacturers split certain routine childhood vaccines ~~be divided~~ into five separate doses administered at six-month ~~intervals to introduce smaller amounts of vaccine into~~ intervals. Speaking from the ~~body at one time. The~~ Oval Office with Secretary Kennedy, the President stated each dose would contain approximately 20% of the amount found in current single-shot doses. He claimed ~~these changes could~~ this approach would lead to a “massive reduction in autism,” a claim that contradicts scientific ~~studies~~ consensus and ~~consensus, including~~ studies, such as a 2018 JAMA ~~study,~~ study and Danish cohort studies, which found no link between vaccines and autism. Medical experts, including Dr. Paul Offit, have ~~expressed concerns~~ criticized the plan, warning that ~~such a schedule~~ reducing dose amounts could ~~reduce vaccine efficacy. Offit noted that doses must meet~~ result in a ~~specific threshold~~ “subimmunogenic effect,” failing to trigger a protective immune ~~response, and reducing the amount could result in a “subimmunogenic effect.”~~ response.

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