Vaccine schedule authority in the United States is split. The FDA licenses vaccines for sale; ACIP votes on recommendations for use; the CDC director adopts those recommendations as official federal guidance; HHS issues final policy; states and school districts then set mandates. Insurers must cover ACIP-recommended vaccines at no cost under section 2713 of the Affordable Care Act.
The split exists because vaccine decisions span technical safety judgments, clinical effectiveness questions, and political tradeoffs about mandates. After HHS Secretary Kennedy fired all 17 ACIP members in June 2025 and announced COVID vaccine policy changes outside ACIP review, the American Academy of Pediatrics broke from the CDC in September 2025 and published its own evidence-based 2026 schedule -- the first time a major medical society refused to endorse the CDC schedule.
The authority is contested at every layer: courts review FDA licensing decisions, Congress controls HHS budgets, and states retain power to require or exempt vaccines from school entry. No single official can rewrite the entire schedule unilaterally without triggering legal and political pushback.
ACIP votes determine which vaccines insurers must cover without copays and which schools require. When that authority is captured by political appointees who reject the evidence, families pay -- either out of pocket or in preventable disease.
People often think CDC alone decides the childhood schedule. In practice, ACIP votes, CDC adopts, HHS issues, and the ACA ties insurance coverage to that vote -- a chain any one actor can disrupt.
ACIP votes determine which vaccines insurers must cover without copays and which schools require. When that authority is captured by political appointees who reject the evidence, families pay -- either out of pocket or in preventable disease.
People often think CDC alone decides the childhood schedule. In practice, ACIP votes, CDC adopts, HHS issues, and the ACA ties insurance coverage to that vote -- a chain any one actor can disrupt.