Health and Human Services Secretary Robert F. Kennedy Jr. convened a newly constituted vaccine advisory committee on 25–26 June after dismissing all 17 members of the long-standing Advisory Committee on Immunization Practices. The seven-member panel, led by biostatistician Martin Kulldorff, opened its first session by pledging to examine the entire childhood and adolescent immunization schedule, the cumulative exposure to vaccine ingredients, and the continued use of older shots. During the meeting the panel endorsed the customary recommendation that nearly everyone six months and older receive an annual influenza immunization, but voted 5-1, with one abstention, to restrict those doses to single-use, thimerosal-free formulations. A scheduled vote on whether to back an additional antibody product to protect infants from respiratory syncytial virus was postponed, and discussion of COVID-19 shots took place against the backdrop of Kennedy’s earlier decision to cease recommending the vaccine for healthy children and pregnant women. The American Academy of Pediatrics boycotted the session, saying the process "is no longer credible," and plans to publish its own vaccine schedule independently of the CDC panel. At least two CDC staff members and one newly appointed adviser resigned before the meeting. Former panelists and infectious-disease specialists warned that the committee’s re-orientation could sow confusion among insurers, state health departments and parents. Questions about transparency deepened after the Department of Health and Human Services failed to release promised conflict-of-interest forms for the new advisers and, on 9 July, abruptly postponed a separate meeting of the U.S. Preventive Services Task Force. Together, the moves signal a broader re-make of federal health advisory bodies and have intensified scrutiny of Kennedy’s ability to reshape U.S. vaccination policy.