Trump's Health Department Fired All 17 CDC Vaccine Advisers and Withheld Safety Studies

Susan Monarez ran the Centers for Disease Control and Prevention for 29 days.¹ On August 25, 2025, she testified, Health Secretary Robert F. Kennedy Jr. demanded that she approve in advance every recommendation of a vaccine committee whose members his department had fired and replaced, and that she dismiss career vaccine officials without cause.¹² She refused both demands, and she believed that refusal explained her firing.¹

The charge is political control over the advice Americans rely on for their health: the department fired the experts, changed vaccine recommendations without the required scientific process and withheld studies supporting vaccine safety.²³⁴ Trump appointed Kennedy to oversee the federal health agencies, and his own memorandum drove the change to the childhood vaccine schedule.⁵³ In August 2026, FactCheck.org reported, Trump signed an executive order calling for separate measles, mumps and rubella shots, with Kennedy present, and inaccurately said the combined vaccine is "quite lethal."⁶

All 17 Advisers Out at Once

The committee was new because Kennedy's department had emptied the old one: on June 9, 2025, HHS fired every sitting member of the Advisory Committee on Immunization Practices, the expert body whose recommendations guide the childhood schedule.²³ Kennedy said the committee had served industry interests and promised impartial science insulated from conflicts.² HHS also said that all 17 members had been appointed by the Biden administration and that keeping them would have prevented the current administration from choosing a majority until 2028.²

HHS announcement of ACIP reconstitution²

A clean sweep is necessary to reestablish public confidence in vaccine science

In the lawsuit that followed, the government pointed to the replacements' advanced degrees and expertise.³ On March 16, 2026, Judge Brian E. Murphy found that they did not represent the relevant expert community and that HHS had not explained why it disregarded the committee's membership rules.³

American Academy of Pediatrics v. Kennedy, preliminary-relief order³

As to that specific function, the newly appointed members appear distinctly unqualified.

Kennedy's removals reached a second panel that evaluates medical evidence: Bloomberg Law reported that in May 2026 he dismissed the two vice chairs of the U.S. Preventive Services Task Force before their terms ended, in letters calling the dismissals administrative and unrelated to performance.⁷ The Supreme Court had confirmed in June 2025 that he could remove its members at will.⁸ Kennedy cited updated governance and oversight procedures intended to protect the validity of future task-force actions, and both doctors were invited to reapply.⁷ Kennedy had said the vaccine committee served industry interests; in July 2026, AP reported, an FDA advisory panel augmented with industry-linked members recommended easing peptide-compounding restrictions despite FDA scientists' objections, in nonbinding 8-6 votes with one abstention.^29101112

Monarez Refused to Approve Conclusions Before Seeing Evidence

Trump had nominated Monarez to lead CDC, and Kennedy swore her in on July 31, 2025, praising her scientific credentials.¹ Testifying to the Senate HELP Committee that September, she described an August 19 directive requiring political-staff approval for CDC policy and personnel decisions.¹ Kennedy's demands followed six days later.¹

Senate HELP Committee testimony¹

He directed me to commit in advance to approving every ACIP recommendation regardless of the scientific evidence.

When she refused, she said, Kennedy told her he had already spoken with the White House several times about removing her.¹ Other accounts said she had offered to resign, was misaligned with administration priorities or was untrustworthy; she disputed them in her testimony.¹ She also said she supported Trump's demand for evidence and agreed with the administration's stated goals of stronger infrastructure, workforce and scientific rigor.¹ Her accusation was that Kennedy required predetermined conclusions, not that she opposed those goals.¹

A Presidential Order Reached the Childhood Schedule

The childhood schedule came next: the January 2026 version followed Trump's memorandum directing a comparison with other countries.³ It reduced routine recommendations from 17 to 11 and restricted recommendations for RSV, hepatitis A, hepatitis B, meningococcal ACWY, meningococcal B and dengue to high-risk groups.³ Murphy found the issuance likely contrary to law and arbitrary and capricious: following presidential orders did not excuse skipping the Administrative Procedure Act's requirements.³

The court explained that CDC immunization schedules affect no-cost insurance coverage, Medicaid and low-income children's benefits, and doctors' liability protections; veterans' health benefits are tied to the adult schedule. It did not decide exactly how changing a recommendation from routine to shared decision-making would affect that liability.³

The Court Stopped the Changes; Federal Guidance Stalled

Murphy's order temporarily blocked 13 challenged appointments, every vote the reconstituted committee had taken, and the January schedule memo.³ Without it, he found, there was a substantial risk to public health, and doctors and medical organizations faced substantial compliance costs they could not recover even if they won.³

The administration kept some ground. The order is preliminary; Georgetown Law's October 7 update lists the government's appeal as still in briefing.³¹³ Murphy declined to bar future committee meetings, leaving HHS free to assemble a lawful committee.³ He also declined to block a separate directive, Kennedy's May 2025 order that CDC stop recommending COVID vaccination for pregnant women and healthy children: the plaintiffs had not shown a viable claim likely to succeed because the directive might not be a final agency action or might have been superseded.³

Kennedy had promised restored trust. The result included a committee unable to meet with its challenged members and a federal recommendation process at a standstill.²³⁵ AP reported in September 2026 that FDA had approved mFlusiva for adults ages 50 to 64, but CDC retained last year's flu recommendations because of legal uncertainties, leaving the new vaccine without a CDC recommendation.⁵ Medical societies recommended it as an option, and private insurers continued paying for vaccines those societies recommended.⁵ AP also reported that the dismissals derailed an existing review of whether one HPV dose could suffice; medical societies could ultimately agree with Kennedy on fewer doses.⁵

FDA Withheld Studies Supporting Vaccine Safety

Reuters reported in May 2026 that FDA blocked publication of studies supporting the safety of COVID and shingles vaccines, and HHS spokesman Andrew Nixon confirmed the withdrawals.⁴ Nixon said the authors' broad conclusions exceeded the underlying data and that FDA acted to protect scientific integrity.⁴ The previous August, Reuters also reported, HHS had announced it would wind down nearly $500 million in mRNA vaccine development, canceling 22 projects overseen by the Biomedical Advanced Research and Development Authority.⁴

Senator Richard Blumenthal's letter of May 12 described what was held back: two COVID studies that medical journals had already accepted and two shingles-study abstracts blocked from conference submission.¹⁴ He asked Commissioner Martin Makary to allow resubmission and to provide records identifying who ordered the blocks and why.¹⁴

Kennedy, meanwhile, promoted claims of vaccine injury: in September 2026, FactCheck.org reported, he displayed a hepatitis B vaccine insert at the conference of Children's Health Defense, the organization he previously led, cited 454 listed adverse events across childhood vaccines and linked them to the chronic-disease epidemic, omitting the insert's warning that voluntary reports cannot reliably establish a causal relationship to vaccination.⁶¹⁵

CDC Turned Its Own Autism Assurance Into a Disclaimer

CDC had already rewritten its own page on vaccines and autism. In November 2025, it recast its longstanding assurance that vaccines do not cause autism as lacking an evidentiary basis, because studies had not ruled out the possibility that infant vaccines cause autism.¹⁶ It said health authorities had ignored studies supporting a link.¹⁶ The same page said its vaccines-do-not-cause-autism heading remained because of an agreement with the chair of the Senate HELP Committee.¹⁶ CDC thus presented the assurance it kept as a political commitment while questioning it in the text.¹⁶

The revised CDC page itself acknowledged that IOM and AHRQ reviews found high-strength evidence of no association between MMR vaccination and autism, while criticizing the underlying observational studies. FactCheck.org separately reported that extensive research had found no link between vaccines and autism.¹⁶⁶

In a September 2025 HHS release on autism, Trump and Kennedy announced an acetaminophen label-change process and public campaign while HHS acknowledged conflicting literature and no clear causal evidence; the same release warned of untreated-fever risks in pregnancy and advised clinicians to use the lowest effective dose for the shortest duration when treatment was required.¹⁷

The Powers Are Broad; the Scientific Rules Still Apply

The strongest defense is that elected administrations can change policy, choose executive officers and reorganize agencies: the President has broad appointment and removal powers, and Congress gave the Secretary broad discretion over advisory committees.¹⁸¹⁹²⁰ Those powers come with rules, and Murphy found that HHS likely broke them: the rules governing committee membership and the process for changing vaccine recommendations.³

Congress's impeachment power reaches abuse of a public trust, the standard Hamilton described in Federalist No. 65.¹⁸²¹ The criminal immunity that Trump v. United States gives former presidents does not remove that power.²²

Appointment, Direction and Continued Responsibility

HHS invoked Trump's executive order on scientific standards in describing how the new advisers would work.² In September 2026, six months after the court's order, Kennedy was still speaking as HHS Secretary.²³⁶ The Constitution requires the President to take care that the laws are faithfully executed and permits impeachment of both the President and civil officers.¹⁸

Trump's health department fired the 17 experts who advised CDC on vaccines, changed the childhood schedule in a way a federal judge found likely contrary to law and withheld studies supporting vaccine safety.²³⁴ The CDC director Trump nominated testified that she was told to approve the new committee's recommendations in advance.¹ Trump directed central parts of the program and kept Kennedy over the department after the court intervened.³²²³ These are abuses of a public trust, and they belong in the case for impeachment: presidential power carried responsibility for lawful, evidence-based public health, and the administration used it to displace the safeguards.¹⁸³²¹