Last mentioned: Feb 25, 2026
Expected Injunction Hearing
Courts are expected to hear arguments for a preliminary injunction to block the changes.
Arizona Joins Lead
Arizona officials confirm their lead role in the litigation, citing risks to state health infrastructure.
Multi-State Lawsuit Filed
More than a dozen states file a federal suit calling the rollback an illegal threat to public health.
Policy Shift Announced
The Trump administration announces significant rollbacks to CDC childhood vaccine recommendations.
A coalition of more than a dozen states, led by Arizona, has filed a federal lawsuit against the Trump administration over its decision to roll back childhood vaccine recommendations. The plaintiffs argue the move is an illegal administrative action that bypasses scientific consensus and poses a direct threat to public health.