U.S. Secretary of Health and Human Services Robert F. Kennedy Jr. fired all 12 members [1] of the CDC vaccine expert panel.
The move signals a sweeping restructuring of the Centers for Disease Control and Prevention's scientific leadership. Critics argue these dismissals politicize public health decision-making, while the administration maintains the changes are necessary to reform the agency's advisory process and increase transparency.
During a Senate Finance Committee hearing in Washington, D.C., on Thursday, July 4, 2026, the fallout from these personnel changes was detailed. The hearing took place the week after Kennedy's appointment as Health Secretary earlier in the year. The restructuring includes the complete removal of the advisory panel, which the administration intends to rebuild from scratch [2].
Former CDC officials have expressed alarm over the speed and scale of the changes. Dr. Debra Houry, a former CDC chief medical officer, spoke on the impact of the current leadership's approach to the agency's staffing.
"We are seeing a complete gutting of the CDC’s scientific infrastructure," Houry said.
Dr. Celine Gounder, a CDC scientist, also joined the discussion regarding the agency's shift in direction. The restructuring follows Kennedy's stated goal to overhaul how the U.S. government approaches vaccine recommendations and oversight.
The dismissals have sparked a crisis of confidence among public health professionals. Opponents of the move say that removing the entire panel of experts undermines the scientific integrity of the CDC, an agency tasked with providing evidence-based guidance to the public.
Kennedy said the changes are needed to reform the CDC’s vaccine advisory process [3]. The administration continues to push for a new model of transparency in how vaccine safety and efficacy are evaluated.
“"We are seeing a complete gutting of the CDC’s scientific infrastructure."”
The removal of the entire vaccine advisory panel represents a fundamental shift in how the U.S. government manages public health policy. By replacing established scientific experts with a new, yet-to-be-named group, the administration is moving away from the previous consensus-based model of vaccine recommendation. This creates a period of institutional instability at the CDC that may affect how vaccines are approved and promoted across the United States.
