Advisory Committee on Immunization Practices at a Crossroads

For over six decades, the Advisory Committee on Immunization Practices (ACIP) has served as a cornerstone of US public health. By reviewing current scientific evidence, this panel of independent experts provides the Centers for Disease Control and Prevention (CDC) with critical guidance on vaccine usage. These recommendations function as the national standard for clinical practice, ensuring consistent immunization schedules, influencing insurance coverage, and maintaining high levels of public trust and safety. Historically, the committee’s rigorous, transparent process—which includes conflict-of-interest monitoring and public deliberations—has been a global model for vaccine program management.

On June 9, 2025, the entire membership of the ACIP and its executive secretary were dismissed, with replacements appointed shortly thereafter. The authors of this paper, all of whom were members of the committee prior to this event, argue that this mass dismissal threatens the integrity of the US vaccine program. By replacing the entire cohort at once, the government has eliminated the institutional knowledge and continuity essential for effective operations. The ACIP charter was specifically designed to use overlapping member terms to prevent this exact type of disruption.

The authors highlight that this shift coincides with other concerns, such as the bypassing of standard review processes for vaccine policies and a perceived disregard for established scientific integrity. They emphasize that the rhetoric surrounding the appointment of new members—which calls for skepticism rather than evidence-based review—threatens to undo decades of progress in reducing vaccine-preventable diseases. The authors warn that these destabilizing actions, taken without a clear rationale, may ultimately reduce access to lifesaving vaccines and put the public at risk of serious, preventable illnesses.