This is the most consequential story in pharmacy this week. It broke May 5th. It lands directly on every pharmacist who administers vaccines, counsels hesitant patients, or works to hold the line on evidence-based care in an increasingly skeptical world.
What Actually Happened
Federal health officials at the FDA blocked the publication of multiple vaccine safety studies for COVID-19 and recombinant zoster vaccines in late 2025 and early 2026. FDA staff scientists conducted analyses of millions of patient records and found that serious adverse events were rare for both vaccines. Agency leadership directed the scientists not to publish.
Two COVID-19 vaccine studies were withdrawn in October 2025 after scientists received direction to pull them, studies that had already been accepted for publication in peer-reviewed medical journals. In February 2026, top FDA officials declined to approve submission of shingles vaccine study abstracts to a major drug safety conference.
A spokesperson for HHS, which oversees the FDA, confirmed the withdrawals. The official rationale: “The studies were withdrawn because the authors drew broad conclusions that were not supported by the underlying data.” Independent scientists and public health experts pushed back sharply on that justification.
Dr. Fiona Havers, a former CDC official who led CDC’s tracking of hospitalizations from COVID-19 and RSV, stated: “HHS leaders now have a clear pattern of blocking high-quality studies that include results that don’t support their overall anti-vaccine narrative. This censorship of taxpayer-funded science is extremely concerning.”
The withdrawals are taking place under HHS Secretary Robert F. Kennedy Jr., a prominent vaccine skeptic who has repeatedly expressed doubt about the safety and efficacy of several vaccines, including COVID-19 vaccines and childhood immunization schedules. Under his leadership, federal health agencies have softened COVID shot recommendations, cut vaccine research funding, and attempted to overhaul the childhood immunization schedule.
Why This Is a Pharmacist Problem Not Just a Policy Problem
The suppression of these studies doesn’t change the underlying data. But it changes the information environment your patients operate in, and you are the one standing at the counseling window when they bring their questions.
One expert framed the stakes directly: “That information goes out to medical care practitioners of all kinds, physicians, nurses, pharmacists, so that they can honestly and clearly represent the effectiveness and safety of vaccines to their patients. Not having this information readily available and published in the scientific literature is very unfortunate, as it impedes the appreciation of the safety and effectiveness of the vaccines now being recommended for use.”
Another expert put it plainly: “Critically, COVID vaccines are among the most studied in history, with large clinical trials and post-market surveillance consistently showing clear and substantial population benefits that outweigh any noted rare risks. Blocking confirmatory safety data doesn’t strengthen the science, it simply removes it from view. Vaccine confidence is not a fixed quantity; it erodes incrementally, and it erodes fastest when people sense that information is being managed rather than shared.”
That erosion doesn’t stay inside a federal agency. It reaches your pharmacy counter, amplified by social media, news coverage, and the patients who trust you enough to ask what you think.
What the Science Actually Says Your Counseling Foundation
The suppressed studies are not the only data. They are among thousands of data points in one of the most robust vaccine surveillance systems ever built, and that body of evidence has not changed.
Postmarketing surveillance systems, including the Vaccine Adverse Event Reporting System (VAERS) and the Vaccine Safety Datalink (VSD), have consistently demonstrated that serious adverse events are rare and that benefits outweigh risks for both COVID-19 vaccines and the recombinant zoster vaccine across diverse patient populations.
The Vaccine Safety Datalink is an active surveillance system, not a passive reporting database. It uses electronic health record data from healthcare organizations across the United States, established in 1990, monitoring safety continuously and detecting adverse events in near-real time. VSD findings directly inform U.S. vaccine safety recommendations.
While serious adverse events can happen after vaccination, they are rarely caused by the vaccine. VAERS is designed to detect unusual or unexpected patterns of adverse events rapidly, when a safety signal appears in VAERS, it triggers further investigation through more rigorous systems like VSD. The absence of persistent safety signals across these complementary systems, for both COVID-19 vaccines and Shingrix, is the scientific conclusion that matters.
The immunization guidance for both vaccines has not changed. The cumulative evidence base has not changed. What changed is whether one set of confirmatory findings, generated by FDA scientists, reached peer-reviewed journals. That is a transparency failure, not a safety failure.
The Hesitancy Script Your Patients Will Bring You
When a patient says: “I heard the government pulled studies showing vaccines aren’t safe”, here is the accurate answer, stated plainly:
The studies found the vaccines ARE safe. They found serious side effects to be rare. The studies were not published, but the findings align with everything else in the surveillance record from millions of patients monitored over years by multiple independent systems. The suppression of a confirmatory study does not change the underlying evidence. It is a regulatory process failure, not a scientific reversal.
Pharmacists should be prepared to contextualize such developments by emphasizing the robust body of existing safety data and the multiple independent systems that continuously monitor vaccine safety. The distinction between regulatory process decisions and scientific consensus is important, internal agency decisions can affect how and when data are released, but they do not change the underlying evidence regarding vaccine safety and efficacy.
That is not a political statement. It is clinical counseling grounded in evidence. You do not have to have an opinion about HHS leadership to deliver it. You only have to know what the science says.
The Trust Variable No Policy Can Replace
Research on pharmacist-led vaccine counseling consistently shows that pharmacists can play a pivotal role in addressing vaccine hesitancy because of the relationship of trust they have with patients and their ease of access. In one pharmacy-based intervention study, 77.2% of people who had not received a vaccine in the previous year changed their minds after receiving one-on-one counseling from their pharmacist.
That finding predates this controversy. It will hold during it, but only if pharmacists are prepared to meet the question directly, accurately, and with confidence.
In a moment of intentional scientific confusion, the pharmacist-patient relationship is not just a clinical asset. It is a public health infrastructure. When federal agencies create information vacuums, those vacuums fill with whatever is loudest. The loudest voice in your patients’ lives should be a credentialed, evidence-fluent pharmacist they have trusted for years.
What to Do Before Your Next Vaccine Appointment
Review your vaccine counseling script this week. Make sure you can articulate the full landscape of vaccine safety surveillance, VAERS, VSD, CDC monitoring, large-scale observational data, in plain language. Your patients do not need a lecture on study design. They need a trusted person to tell them what the evidence actually shows.
Prepare a one-sentence response to the suppression story. Something like: “The FDA scientists found the vaccines were safe. The studies weren’t published, but the conclusion matches everything else we know from millions of patients. The science hasn’t changed.” Direct, accurate, not political.
Don’t avoid the news. Patients who trust you will bring you the headline and wait to see how you respond. Hesitating, deflecting, or saying “I don’t know” in that moment erodes the trust that makes your counseling effective. Know the facts before the question arrives.
The FDA made a decision that damaged public trust in vaccine science. The pharmacist is now the most accessible credentialed expert most patients can reach. That responsibility didn’t come with a memo. It came with a pharmacy license, and the trust that was already there before any of this happened.
Use it.
Sources: Pharmacy Times / Contemporary Clinic (FDA Blocks Publication of COVID-19 and Shingles Vaccine Safety Studies: What Pharmacists Need to Know, May 6–9, 2026), ABC News (FDA Withdrew Studies Finding COVID and Shingles Vaccines Were Safe, May 5, 2026), CNBC (FDA Withdrew Studies Finding COVID, Shingles Vaccines Safe, May 5, 2026), Washington Post (FDA Halts Publication of Studies on COVID and Shingles Vaccines, May 5, 2026), Healthline (FDA Blocks COVID-19, Shingles Vaccine Safety Studies: Experts React, May 8, 2026), New York Times (FDA Blocked Publication of Vaccine Safety Research, May 5, 2026), CDC (About the Vaccine Safety Datalink, September 2025), CDC (About VAERS, April 2026), PMC / Vaccines (The Role of Pharmacists in Counteracting Vaccine Hesitancy, 2024)
