Judge Blocks Kennedy’s Vaccine Policy Changes

A federal judge has temporarily blocked several key changes to U.S. Vaccine policy implemented by Health and Human Services Secretary Robert F. Kennedy, dealing a significant setback to the administration’s efforts to reshape childhood immunization schedules and COVID-19 vaccine recommendations. The ruling stems from a lawsuit brought by several prominent medical organizations concerned about the scientific basis and procedural integrity of the changes.

Legal Challenges and Rulings

U.S. District Judge Brian E. Murphy ruled on Monday, March 16, 2026, that the Centers for Disease Control and Prevention (CDC)’s overhaul of the U.S. Childhood vaccine schedule did not follow proper legal procedures, thereby “undermining the integrity of its actions.” CNN reports. The judge also stayed the appointments of Kennedy’s handpicked members to the Advisory Committee on Immunization Practices (ACIP), citing violations of the Federal Advisory Committee Act (FACA). American Public Health Association

Specifically, the injunction halts the revised vaccine schedule issued by the Department of Health and Human Services (HHS) on January 5, overturns a May 2025 directive regarding COVID-19 vaccine recommendations, and reverses downgraded recommendations for the Hepatitis B vaccine made in December 2025. American Public Health Association

Concerns from Medical Organizations

The lawsuit was filed by the American Academy of Pediatrics, the American Public Health Association, the American College of Physicians, the Infectious Diseases Society of America, the Society for Maternal-Fetal Medicine, and several state-level medical organizations. Plaintiffs argued that Kennedy’s directives circumvented established, evidence-based procedures for developing national vaccine guidance, potentially undermining public health and eroding confidence in immunization policy. American Public Health Association The medical associations expressed concern that the changes would require them to spend additional time counseling patients about altered vaccine recommendations. CNN

HHS Response

HHS Spokesman Andrew Nixon stated that the department anticipates the judge’s decision will be overturned, mirroring previous rulings that favored the Trump administration. CNN

Background on Kennedy’s Appointments

In June 2025, Secretary Kennedy dismissed all 17 members of the CDC’s ACIP and replaced them with his own appointees, a move also challenged in court as a violation of federal procedures. CNN The ACIP meeting scheduled for this week has been postponed as a result of the judge’s ruling. CNN

Looking Ahead

The court has allowed the larger case to proceed, and the government’s motion to dismiss was denied. The outcome of this legal battle will significantly impact the future of U.S. Vaccine policy and the role of scientific expertise in public health decision-making. The New York Times