Health groups said on Jan. 9 they plan to sue the government over recent changes to the Centers for Disease Control and Prevention’s vaccine schedule for children.
“Plaintiffs have provided Defendants notice of their intention to seek leave to amend the Third Amended Complaint to challenge a new final agency action—Defendants’ recent actions to revise the childhood and adolescent immunization schedule,” the litigants stated.
They want an injunction against the changes, which would force the government to revert to the previous schedule.
The plaintiffs also plan to ask the court to bar the CDC’s vaccine advisory committee, known as ACIP, from holding a meeting that is currently slated to take place on Feb. 25 and Feb. 26, based on claims that false and misleading information was put forth at the last meeting, which happened in December 2025.
“Plaintiffs plan to move to enjoin the next meeting to prevent this ACIP from spreading more misinformation to the public,” the groups said.
The filing was lodged with the U.S. District Court for the District of Massachusetts.
Prior to the recent vaccine schedule changes, the CDC stopped recommending COVID-19 vaccination to healthy children and pregnant women. The agency was following orders from Health Secretary Robert F. Kennedy Jr.
Murphy ordered the plaintiffs and defendants to submit a proposed schedule for upcoming motions and other matters in the litigation.
The American Academy of Pediatrics and other plaintiffs told the judge that, in addition to rulings blocking the schedule changes and the upcoming ACIP meeting, they want documents related to the changes. The relevant timeframe is between Dec. 5, 2025, when President Donald Trump directed Kennedy and the acting CDC director to explore making changes based on how other countries handle vaccines, and Jan. 5, 2026, when the changes were announced, they said.
They also want documents related to the selection of agenda items and speakers for the three most recent ACIP meetings.
As for the scheduled February advisory meeting, the government said defendants “are under no obligation to produce records related to this meeting” because it is not part of the third amended complaint. Even if they were, no records exist for the meeting as of yet, they added.







