Federal Court Blocks ACIP Meeting, Changes to Childhood Vaccine Schedule | 16 March 2026 | A federal court in Boston today blocked a key government vaccine advisory committee from holding its scheduled meeting this week, and paused changes the committee made to vaccine recommendations under U.S. Health Secretary Robert F. Kennedy. HHS spokesperson Andrew Nixon told The Defender in a statement that it “looks forward to this judge’s decision being overturned just like his other attempts to keep the Trump administration from governing.” U.S. District Judge [nominated to the bench by Joe Biden] Brian E. Murphy’s 45-page ruling also stayed the appointment of 13 new ACIP members appointed between June 2025 and January 2026. The ruling also stays the changes U.S. Health Secretary Robert F. Kennedy Jr. made in January to the CDC’s recommended childhood immunization schedule. Those changes reduced the number of diseases for which children would receive recommended routine vaccinations from 17 to 11.