Dr. Robert Malone, vice chair of the Advisory Committee on Immunization Practices (ACIP), resigned after a federal judge blocked the panel’s authority. Appointed by Robert F. Kennedy Jr. following a purge of prior members, Malone cited “hostile press, internal bickering, and weaponized leaking” as reasons for stepping down. The U.S. District Court for Massachusetts ruled the committee unqualified to advise on vaccines, halting its operations, including decisions to rescind childhood vaccine recommendations. Judge Brian Murphy criticized panelists’ expertise, prompting Malone to accuse him of “slandering” his mRNA technology contributions, which underpinned Pfizer and Moderna’s COVID-19 vaccines.

Malone’s resignation leaves the ACIP in limbo as the Department of Health and Human Services (HHS) prepares to appeal the ruling. Despite HHS’s efforts, Malone stated he would not rejoin even if the decision were overturned. His exit underscores tensions between Kennedy’s appointees and public health authorities. Dr. Joseph Hibbeln, a fellow panelist, noted Malone’s desire to “decrease drama” contrasts with his prior inflammatory remarks. Conflicts escalated after Malone clashed with HHS staff over speculation about new appointees.

The dispute highlights broader debates over vaccine policy and judicial oversight. Kennedy’s appointees, many vaccine skeptics, face scrutiny for lacking scientific consensus. HHS’s appeal could delay further decisions, leaving Americans without updated guidance. Meanwhile, Malone’s departure removes a vocal critic of mRNA vaccines from a pivotal advisory role. Apoorva Mandavilli, The New York Times’ health correspondent, contextualizes the fallout, emphasizing the panel’s fractured dynamics and implications for public trust in immunization programs.