Last mentioned: Mar 17, 2026
HHS Response
HHS announces intent to appeal and postpones the upcoming ACIP committee meeting.
Judicial Stay Issued
Judge Brian Murphy halts the policy implementation and stays ACIP decisions.
Federal Injunction
Judge Brian Murphy halts the implementation of the vaccine overhaul.
Court Ruling
Judge Brian Murphy issues a stay, halting the implementation of the vaccine overhaul.
Medical Groups Sue
AAP and ACP file suit in Massachusetts federal court to block the overhaul.
Legal Challenge
The AAP and ACP file suit in Massachusetts federal court to block the changes.
Legal Challenge Filed
The AAP and ACP file suit in Massachusetts federal court to block the changes.
HHS Policy Shift
Secretary Kennedy issues a memo reducing universal vaccine recommendations for children.
ACIP Reconstitution
HHS replaces existing ACIP members with new appointees aligned with RFK Jr.'s views.
ACIP Restructuring
HHS replaces existing ACIP members with figures aligned with the administration's views.
HHS Policy Shift
Secretary RFK Jr. issues a memo reducing universal vaccine recommendations.
HHS Policy Shift
Secretary RFK Jr. issues a memo reducing universal vaccine recommendations.
A Massachusetts federal judge has blocked the Trump administration's attempts to dismantle the standard U.S. vaccine schedule. The ruling halts Robert F. Kennedy Jr.’s efforts to reduce recommended pediatric immunizations, citing a failure to follow established scientific and procedural laws.
A federal judge in Massachusetts has issued a stay against the Department of Health and Human Services' sweeping changes to the national vaccine schedule. The ruling halts Secretary Robert F. Kennedy Jr.’s efforts to reduce recommended immunizations, finding the administration bypassed established scientific and legal protocols.
A federal judge in Massachusetts has issued a stay against the Trump administration's sweeping changes to the national vaccine schedule, ruling that the Department of Health and Human Services bypassed established scientific and legal procedures. The decision halts Secretary Robert F. Kennedy Jr.’s efforts to reduce recommended immunizations and suspends the activities of a newly reconstituted advisory panel.