A federal judge in Massachusetts has temporarily blocked the Trump administration’s bid to scale back the nation’s childhood vaccine recommendations, freezing a set of high‑profile changes advanced by Health and Human Services Secretary Robert F. Kennedy Jr. The preliminary injunction stops federal health officials from implementing a revised immunization schedule that would have reduced the number of routinely recommended childhood vaccines from 17 to 11 and narrowed recommendations for shots including hepatitis A, hepatitis B, some meningitis vaccines, flu, rotavirus, and RSV.
U.S. District Judge Brian Murphy ruled that Kennedy’s moves to rewrite the pediatric immunization schedule and to remake a key federal vaccine advisory panel likely ran afoul of the Administrative Procedure Act, which governs how agencies must develop and justify major policy changes. Medical societies led by the American Academy of Pediatrics and joined by public health and physician groups sued HHS last year, arguing that the department sidelined scientific expertise, bypassed long‑standing procedures, and created confusion for pediatricians and parents.
The judge’s order not only pauses the January 2026 schedule changes but also suspends the effect of decisions made by the reconstituted Advisory Committee on Immunization Practices, the expert body that shapes federal vaccine guidance and influences insurance coverage. Kennedy had dismissed the committee’s prior 17 members and installed new appointees, including several prominent vaccine skeptics, as part of a broader effort to tighten federal support for certain vaccines and scale back COVID‑19 vaccine recommendations for children and pregnant women.
For now, national pediatric guidance effectively reverts to the pre‑January schedule favored by mainstream medical organizations, which have urged clinicians to keep following long‑standing recommendations while the case proceeds. Public health leaders cast the ruling as a win for evidence‑based policymaking and a stabilizing moment after months of policy whiplash in pediatric vaccination, while HHS officials signaled they intend to appeal, setting up a protracted legal fight that could ultimately reach the Supreme Court.
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