RFK Jr.'s Vaccine Advisers Withdraw Proposal to Revisit COVID-19 Shot

The federal Advisory Committee on Immunization Practices — reconstituted by Health and Human Services Secretary Robert F. Kennedy Jr. with members sympathetic to vaccine skepticism — has quietly shelved a proposal to revisit the recommendation for mRNA COVID-19 vaccines [1]. The reversal, first reported by The Washington Post on March 11, 2026, represents a rare moment of restraint in what has been the most aggressive overhaul of U.S. vaccine policy in modern history.

The decision did not emerge from new scientific evidence or a change of heart among the committee's members. Instead, according to two people familiar with the matter, it was driven by a far more pragmatic force: Republican anxiety about the 2026 midterm elections [1][2].

The Proposal That Wasn't

Several members of the reconstituted ACIP had been pushing to fundamentally re-evaluate the mRNA COVID-19 vaccines manufactured by Pfizer-BioNTech and Moderna [1]. The effort was led in part by a COVID-19 vaccine working group chaired by Retsef Levi, a professor of operations management at MIT's Sloan School of Management, who was appointed to ACIP by Kennedy [3][4].

Levi's working group had laid out an ambitious — and controversial — scope of review. Its stated terms of reference included investigating alleged DNA contamination in vaccine vials, the persistence of mRNA and spike protein in the body, immune system changes from repeated boosting, cardiovascular risks including myocarditis, and reproductive and pregnancy safety concerns [4]. Many of these topics, while they echo talking points from anti-vaccine communities, either reflect already-investigated and resolved safety signals or rest on debunked claims.

A CIDRAP op-ed published ahead of the planned March meeting directly challenged the premise of the review, noting that "the COVID vaccine myocarditis signal was real but is now resolved" and that the ACIP agenda "pretends otherwise" [5]. A Danish study of more than one million adults found no elevated myocarditis risk with JN.1-adapted vaccines, and two U.S. studies evaluating XBB.1.5 vaccines found no such signal either [5].

The proposal to potentially halt or restrict mRNA vaccine recommendations would have gone further than the committee's September 2025 actions, which already significantly weakened the federal posture on COVID-19 vaccination.

A Year of Upheaval

To understand the significance of this retreat, it must be placed within the broader context of vaccine policy changes that have unfolded since Kennedy took the helm at HHS in early 2025.

June 2025: The purge. Kennedy fired all 17 members of ACIP — an unprecedented action — and replaced them with eight new appointees [6][7]. Among the replacements were Robert Malone, who has claimed the COVID-19 vaccine could cause a form of AIDS and that Americans were "hypnotized" into getting vaccinated, and Martin Kulldorff, a co-author of the Great Barrington Declaration who was reportedly fired from Harvard Medical School for social media posts questioning COVID-19 vaccine necessity [8][9]. Two of the new appointees had received compensation as paid expert witnesses in vaccine-related cases against pharmaceutical manufacturer Merck [10].

September 2025: The first rollback. In a chaotic two-day meeting, the reconstituted ACIP voted unanimously to abandon the previous universal recommendation for annual COVID-19 vaccination for anyone six months and older [11]. Instead, the committee said Americans could get the shot "based on individual-based decision-making" — effectively relegating COVID vaccination from a public health recommendation to a personal choice [11]. A separate proposal to require a doctor's prescription for the COVID-19 vaccine resulted in a 6-to-6 tie, with chair Kulldorff casting the deciding vote against it [12].

January 2026: The childhood schedule overhaul. Following a presidential memorandum, the CDC overhauled the childhood immunization schedule to reduce universally recommended vaccines from 17 diseases to 11, modeling the new schedule on Denmark's approach [13][14]. The vaccines dropped from universal recommendation include hepatitis A, hepatitis B (for newborns), meningococcal disease, and rotavirus, among others. The administration maintained that ACA plans and federal insurance would continue to cover all previously recommended vaccines [14].

Source: CDC SchoolVaxView / KFF

Data as of Aug 4, 2025CSV

The Midterm Factor

The decision to pull back on the COVID vaccine proposal did not happen in a vacuum. It unfolded against a backdrop of intensifying Republican worry about the political costs of the administration's vaccine agenda.

Internal polling shared among GOP strategists has delivered a stark message. A Trump-aligned pollster found that "Republicans or Democrats adopting positions that remove long-standing vaccine recommendations would negatively impact their party's performance" [15]. The data showed that while the broader Make America Healthy Again (MAHA) agenda — focused on food quality, reducing ultra-processed ingredients, and drug pricing — polls favorably, "vaccine skepticism stands as an outlier, rejected by most voters even within the MAHA movement" [15].

GOP strategist Liz Mair put it bluntly: "For [candidates] who have to do a lot of appealing to suburban parents, I think [vaccine changes] are a hindrance." She noted that suburban women voters "are not naturally going to gravitate towards the party that puts an anti-vax guy" in charge of health policy [2].

The Washington Post reported in late February that Kennedy himself had been "staying quiet" about vaccine changes, with administration officials pivoting to emphasize food safety and drug pricing achievements instead [16]. The retreat on the mRNA COVID vaccine proposal appears to be part of this broader strategic recalibration.

The Public Health Toll

While the political calculus may have halted this particular proposal, the cumulative impact of the past year's vaccine policy changes is already measurable — and, according to public health officials, alarming.

COVID-19 vaccination uptake has plummeted. As of January 2026, only 16.1% of adults had received a 2025-26 COVID-19 vaccine, with rates of 30.8% among adults 65 and older and a dismal 9.0% among children [17]. Only 8.6% of adults reported they "definitely will" get vaccinated — a figure that reflects both the weakened recommendations and the erosion of public trust in the vaccination infrastructure [17].

Childhood vaccination rates, already declining before the policy changes, have continued their downward trajectory. During the 2024-25 school year, MMR vaccination coverage among kindergartners fell to 92.5%, down from 95.2% in 2019-20 [18]. Non-medical exemptions hit an all-time high of 3.4%, with 17 states reporting exemptions exceeding 5% [18].

The consequences are tangible. The United States experienced its worst year for measles in over three decades in 2025, with 2,283 confirmed cases — 93% of them in unvaccinated individuals [19]. As of March 5, 2026, another 1,281 cases have been reported, bringing the 15-month total to over 3,500 [19]. In November 2025, the Pan American Health Organization declared that the Americas — including the United States — had lost measles elimination status [19].

Source: CDC / ASTHO

Data as of Mar 5, 2026CSV

The Legal Battleground

The administration's vaccine policy changes have not gone unchallenged in the courts. In February 2026, a multistate lawsuit was filed against the Trump administration, challenging the January 5 CDC decision memo that stripped seven childhood vaccines of their universally recommended status [20]. The American Academy of Pediatrics had previously filed a lawsuit in July 2025 challenging the initial removal of COVID-19 vaccines from recommended schedules for healthy children and pregnant women [21].

A nearly 80-year-old federal law — the National Childhood Vaccine Injury Act of 1986, which ties insurance coverage mandates to ACIP recommendations — could serve as a check on the administration's ability to reshape the vaccine landscape [22]. Legal scholars have noted that the law creates a statutory framework that limits how far executive action alone can go in dismantling vaccine infrastructure.

Meanwhile, the majority of U.S. states have formally adopted the American Academy of Pediatrics' recommended vaccine schedule rather than the revised CDC guidance, and pediatricians nationwide continue to follow the AAP's recommendations as the professional standard of care [20].

What Comes Next

The ACIP meeting originally scheduled for March was postponed after HHS missed procedural deadlines, but has been rescheduled for March 18-19 [23]. The agenda still includes discussions of COVID-19 vaccine safety, long COVID, and potential changes to the committee's recommendation methodology [5]. Whether the retreat on mRNA vaccines holds through that meeting remains an open question.

The broader trajectory of vaccine policy under the Kennedy HHS also remains uncertain. The administration has achieved significant structural changes — a reconstituted advisory panel, a reduced childhood vaccination schedule, weakened COVID-19 vaccine recommendations — that will take years to reverse even if political winds shift.

For now, the retreat on the mRNA COVID vaccine proposal offers a revealing case study in the tension between ideological ambition and electoral reality. The same political system that enabled the most radical transformation of U.S. vaccine policy in generations may also be the force that sets its limits. Whether those limits hold — and whether the public health damage already inflicted can be repaired — will depend on what happens not just in the committee room, but at the ballot box.