anti-vaccine

CDC vaccine panel realizes again it has no idea what it’s doing, delays big vote

anti-vaccine, CDC, health, robert f kennedy jr / Paul Patrick / December 4, 2025

Today’s meeting was chaotic and included garbage anti-vaccine presentations.

Dr. Robert Malone speaks during a meeting of the CDC Advisory Committee on Immunization Practices (ACIP) at CDC Headquarters on December 4, 2025 in Atlanta, Georgia. Credit: Getty | Elijah Nouvelage

The panel of federal vaccine advisors hand-selected by anti-vaccine Health Secretary Robert F. Kennedy Jr. has once again punted on whether to strip recommendations for hepatitis B vaccinations for newborns—a move it tried to make in September before realizing it didn’t know what it was doing. The decision to delay the vote today came abruptly this afternoon when the panel realized it still does not understand the topic or what it was voting on.

Prior to today’s 6–3 vote to delay a decision, there was a swirl of confusion over the wording of what a new recommendation would be. Panel members had gotten three different versions of the proposed recommendation in the 72 hours prior to the meeting, one panelist said. And the meeting’s data presentations this morning offered no clarity on the subject—they were delivered entirely by anti-vaccine activists who have no subject matter expertise and who made a dizzying amount of false and absurd claims.

“Completely inappropriate”

Overall, the meeting was disorganized and farcical. Kennedy’s panel has abandoned the evidence-based framework for setting vaccine policy in favor of airing unvetted presentations with misrepresentations, conspiracy theories, and cherry-picked studies. At times, there were tense exchanges, chaos, confusion, and misunderstandings.

Still, the discussion was watched closely by the medical and health community, which expects that the panel—composed of Kennedy allies who espouse anti-vaccine views—will strip the recommendation for a hepatitis B vaccine birth dose. Decisions by the committee, the Advisory Committee on Immunization Practices (ACIP) in the Centers for Disease Control and Prevention, have historically set national vaccine policy. Health insurance programs are required to cover, at no cost, vaccinations recommended by the ACIP. So rescinding a recommendation means Americans could lose coverage.

Medical and public health experts consider the birth-dose vaccination to be critical for protecting all infants from contracting the highly infectious virus that, when acquired early in life from their mother or anyone else, almost always causes chronic infections that lead to liver disease, cancer, and early death. There is no data suggesting harms from the newborn dose, nor any safety data suggesting that delaying the first dose by a month or two, as ACIP is considering, would be safer or better in any way. But studies do indicate that such a delay would lead to more hepatitis B infections in babies

These points were hard to find in today’s presentations. Abandoning standard protocol, the meeting did not include any presentations or data reviews led by CDC scientists or subject matter experts. Kennedy has also barred medical and health expert liaisons—such as the American Medical Association, the Infectious Disease Society of America, and the American Academy of Pediatrics—from participating in the ACIP working groups, which compile data and set language for proposed vaccine recommendations.

Anti-vaccine presentations

Instead, today, ACIP heard only from anti-vaccine activists. The first was Cynthia Nevison, a climate researcher and anti-vaccine activist with ties to Children’s Health Defense, Kennedy’s anti-vaccine organization. She was also a board member of an advocacy group called Safe Minds, which promotes a false link between autism and vaccines, specifically the mercury-containing vaccine preservative thimerosal, which was removed from routine childhood vaccines in the early 2000s. (Safe Minds stands for Sensible Action For Ending Mercury-Induced Neurological Disorders.) According to her academic research profile at the University of Colorado Boulder, her expertise is in “global biogeochemical cycles of carbon and nitrogen and their impact on atmospheric trace gases.”

Far from that topic, Nevison gave a presentation downplaying the transmission of hepatitis B and the benefits of vaccines. She falsely claimed that the dramatic decline in hepatitis B infections that followed vaccination efforts was not actually due to the vaccination efforts—despite irrefutable evidence that it was. And she followed that up with her own unvetted modeling claiming that CDC scientists overestimate the risk of transmission. She ended by presenting a few studies showing declines in blood antibody levels after initial vaccination, which she claimed suggests that the hepatitis B vaccine does not offer lifelong protection, an incorrect takeaway based on her lack of expertise.

The author of one of the studies just happened to be present at today’s meeting. Pediatrician Amy Middleman, who is an ACIP liaison representing the Society for Adolescent Health and Medicine (SAHM) and a professor at Case Western Reserve University School of Medicine, was the first author on a key study Nevison referenced. Middleman was quick to point out that Nevison had completely misunderstood the study, which actually showed that cell-based immune protection from the vaccine offers robust lifelong protection, even after initial antibody levels decline (called an anamnestic response).

“This is where a really experienced understanding of immunization comes into play,” Middleman said. “The entire point of our study is that for most vaccines, the anamnestic response is really their superpower. So this study showed that memory cells exist such that when they see something that looks like the hepatitis B disease, they actually attack. The presence of a robust and anamnestic response, regardless of circulating antibody years later, shows true protection.”

The next presentation was from Mark Blaxill, an anti-vaccine activist installed at the CDC in September. Blaxill gave a presentation on hepatitis B vaccine safety, despite having no background in medicine or science. He previously worked as an executive for a technology investment firm and, like Nevison, also worked for Safe Minds, where he was vice president. Blaxill has written books and many articles falsely claiming that vaccines cause a variety of harms in children. In 2004, when an Institute of Medicine analysis concluded that there were no convincing links between vaccines and autism, Blaxill publicly protested the result.

In his presentation, he attacked the quality of safety data in past hepatitis B studies. Though he stopped short of suggesting any specific harms from the vaccine, he aired unsubstantiated possibilities popular with anti-vaccine activists. He also noted a study finding that some babies had fatigue and irritability after vaccination, which he bizarrely suggested was a sign of encephalitis (inflammation of the brain).

Real-time feedback

Cody Meissner, a pediatrician and voting member of ACIP who is the most qualified and experienced member of the panel, quickly called out the suggestion as ridiculous. “That is absolutely not encephalitis,” Meissner said with frustration in his voice. “That’s not a statement that a physician would make. [Those symptoms] are not related to encephalitis, and you can’t say that.”

As in previous meetings, Jason Goldman, the ACIP liaison representing the American College of Physicians, gave the most biting response to the meeting overall, saying:

Once again, this committee fails to use the evidence to recommend framework and shows absolutely no understanding of the process or the gravity of the moment of the recommendations that you make. We need to look at all the evidence and data and not cherry-pick them… This meeting is completely inappropriate for an administration that wants to avoid fraud, waste, and abuse. You are wasting taxpayer dollars by not having scientific, rigorous discussion on issues that truly matter. The best thing you can do is adjourn the meeting and discuss vaccine issues that actually need to be taken up… As physicians, your ethical obligation is primum non nocere, first do no harm, and you are failing in that by promoting this anti-vaccine agenda without the data and evidence necessary to make those informed decisions.

The panel will reconvene tomorrow for an all-day meeting in which the members will consider a vote on the hepatitis B vaccine for a third time. The meeting will also host other anti-vaccine presentations attacking the childhood vaccine schedule in its entirety.

Beth is Ars Technica’s Senior Health Reporter. Beth has a Ph.D. in microbiology from the University of North Carolina at Chapel Hill and attended the Science Communication program at the University of California, Santa Cruz. She specializes in covering infectious diseases, public health, and microbes.

CDC vaccine panel realizes again it has no idea what it’s doing, delays big vote Read More »

Meet CDC’s new lead vaccine advisor who thinks shots cause heart disease

ACIP, anti-vaccine, CDC, fda, health, Kirk Milhoan, myocarditis, robert f kennedy jr, vinay prasad / Paul Patrick / December 2, 2025

Milhoan has a history of touting unproven COVID cures while disparaging vaccines.

Kirk Milhoan, James Pagano, and Robert Malone are seen during a meeting of the CDC’s Advisory Committee on Immunization Practices on September 18, 2025 in Chamblee, Georgia. Credit: Getty | Elijah Nouvelage

When the federal vaccine committee hand-picked by anti-vaccine Health Secretary Robert F. Kennedy Jr. meets again this week, it will have yet another new chairperson to lead its ongoing work of dismantling the evidence-based vaccine recommendations set by the Centers for Disease Control and Prevention.

On Monday, the Department of Health and Human Services announced that the chairperson who has been in place since June—when Kennedy fired all 17 expert advisors on the committee and replaced them with questionably qualified allies—is moving to a senior role in the department. Biostatistician Martin Kulldorff will now be the chief science officer for the Office of the Assistant Secretary for Planning and Evaluation (ASPE), HHS said. As such, he’s stepping down from the vaccine committee, the Advisory Committee on Immunization Practices (ACIP).

Kulldorff gained prominence amid the COVID-19 pandemic, criticizing public health responses to the crisis, particularly lockdowns and COVID-19 vaccines. He was a co-author of the Great Barrington Declaration that advocated for letting the deadly virus spread unchecked through the population, which was called unethical by health experts.

As ACIP chair, Kulldorff frequently made false and misleading statements about vaccine safety and efficacy that were in line with Kennedy’s views and statements. While Kulldorff presided over the committee, it made a series of decisions that were sharply denounced by scientific and medical groups as being based on ideology rather than evidence. Those include voting for the removal of the vaccine preservative thimerosal from some flu vaccines, despite well-established data indicating it is safe, with no evidence of harms. The committee also added restrictions to a combination measles, mumps, rubella, and varicella (chickenpox) MMRV vaccine and made an unprecedented effort to prevent Americans from getting COVID-19 vaccines, though the moves were largely ineffective.

In his new role, Kulldorff will be working with ASPE to provide analyses on health policy options, coordinate research efforts, and provide policy advice.

“It’s an honor to join the team of distinguished scientists that Secretary Kennedy has assembled,” Kulldorff said in a press release announcing his new role. “I look forward to contributing to the science-based public health policies that will Make America Healthy Again.”

The new chair, Kirk Milhoan

With Kulldorff moving on, ACIP will now be chaired by Kirk Milhoan, a pediatric oncologist with a track record for spreading COVID-19 misinformation and anti-vaccine views. In August 2021, the Hawaii Medical Board filed a complaint against Milhoan after he appeared on a panel promoting ineffective COVID-19 treatments, downplaying the severity of the disease, and spreading misinformation about COVID-19 vaccines, according to the Maui News. The complaint was dropped in April 2022 after state regulators said they had insufficient evidence to prove a violation of statutes regarding the practice of medicine.

While Milhoan claimed at the time that he is “pro-vaccine,” his statement, affiliations, and prescribing practices suggest otherwise. Milhoan is a member of the Independent Medical Alliance (formerly the Front Line COVID-19 Critical Care Alliance), a group of dubious health care providers set up amid the pandemic to promote the use of the anti-malaria drug hydroxychloroquine and the de-worming drug ivermectin to treat COVID-19. Both drugs have shown to be ineffective and potentially harmful when used to treat or prevent COVID-19. The IMA also emphasizes vaccine injuries while pushing vitamins and other unproven treatments.

In 2024, Milhoan appeared on a panel set up by Rep. Marjorie Taylor Greene (R-Ga.) to discuss alleged injuries from COVID-19 vaccines alongside other prominent anti-vaccine and COVID-19 misinformation voices. In his opening statement, Milhoan suggested that COVID-19 vaccines were causing severe cardiovascular disease and death in people aged 15 to 44—an unsubstantiated claim he frequently echoes. In his bio for the IMA, he touts that he offers treatment for “vaccine-related cardiovascular toxicity due to the spike protein.”

CDC data has found that boys and young men, aged 12 to 24, have a heightened risk of myocarditis (inflammation of the heart) after COVID-19 vaccination. However, the cases are rare, relatively mild, and almost always resolve, according to CDC data. In a COVID-19 safety data presentation in June, CDC staff scientists reported that its vast vaccine safety monitoring systems indicated that in males 12–24, there are 27 myocarditis cases per million doses of COVID-19 vaccine administered (roughly one case in 37,000 doses). In cases identified during 2021, 83 percent recovered within three months, with more than 90 percent recovering within the year. The monitoring data found no instances of cardiac transplant or death from COVID-19 vaccination.

While anti-vaccine activists have seized on this minor risk from vaccination, health experts note that the risk of myocarditis and other inflammatory conditions from a COVID-19 infection is significantly greater than the risk from vaccination. Exact estimates vary, but one CDC study in 2021 found that people with COVID-19 infections had a 16-fold higher risk of myocarditis than people without the infection. Specifically, the study estimated that there were 150 myocarditis cases among 100,000 COVID-19-infected patients versus just nine myocarditis cases among 100,000 people without COVID-19 infections and who were also unvaccinated. Similar to what’s seen with vaccination, the study found that young males were most at risk of myocarditis.

Kennedy’s allies attack on COVID-19 shots

Kennedy and his allies, like Milhoan, have consistently inflated the risk of myocarditis from COVID-19 vaccination, with some claiming without evidence that they have caused sudden cardiac arrest and deaths in young males, though studies have found no such link. In 2022, Milhoan and fellow ACIP member and conspiracy theorist Robert Malone were featured in a viral social media post suggesting that 50 percent of college athletes in the Big Ten athletic conference had myocarditis linked to COVID-19 vaccines, which could lead to deaths if they played. But the two were referencing a JAMA Cardiology study that examined subclinical myocarditis in Big Ten athletes after COVID-19 infection—not vaccination. In fact, researchers confirmed for an AFP fact check that none of the athletes in the study were vaccinated. And the rate of subclinical myocarditis in the group was 2.3 percent, not 50 percent.

Milhoan’s misinformation about the cardiovascular harms from COVID-19 vaccines seems particularly pertinent to the direction of Kennedy’s anti-vaccine allies. On Friday, Vinay Prasad, the Food and Drug Administration’s top vaccine regulator, sent a memo to staff claiming without evidence that COVID-19 vaccines have killed 10 children. The memo provides little information about the extraordinary claim, but it hints that the deaths were linked to myocarditis and found among reports submitted between 2021 and 2024 to the CDC’s Vaccine Adverse Event Reporting System (VAERS).

VAERS is a system by which anyone, including members of the public, can report anything they think could be linked to vaccines. The reports are considered a type of early warning system, but the vast majority of the reports submitted are not actually related to vaccines. Further, CDC scientists have thoroughly evaluated VAERS reports and ruled out deaths attributed to COVID-19 vaccines. Prasad’s memo—which experts have speculated was designed to be leaked to produce alarming headlines about child deaths—claimed that before Trump administration officials with anti-vaccine views began sifting through the data, these deaths were “ignored” by FDA and CDC scientists. Prasad also claimed that there could be many more deaths that have gone unreported, despite the fact that healthcare providers have been legally required to report any deaths that occurred after COVID-19 vaccination, regardless of cause.

This week’s ACIP meeting

In this week’s scheduled ACIP meeting on Thursday and Friday, COVID-19 vaccines don’t appear on the draft agenda. Instead, ACIP is expected to vote to remove a recommendation for a birth dose of the hepatitis B vaccine. That dose protects newborns from contracting the highly infectious virus from their mothers during birth or from other family or acquaintances shortly after birth. About half of the people infected with hepatitis B are not aware of their infections, and testing of mothers before birth is imperfect. That can leave newborns particularly vulnerable, as infections that start at or shortly after birth almost always develop into chronic infections that can lead to liver disease, liver transplant, and cancer. In a previous ACIP meeting, CDC staff scientists presented data showing that there are no significant harms of birth doses and there is no evidence that delaying the immunization offers any benefit.

The committee is also taking on the childhood vaccine schedule as a whole, though the agenda on this topic is not yet clear. In his memo, Prasad attacked the common practice of providing multiple vaccinations at once, hinting that it could be a way in which the committee will try to dismantle current childhood vaccination recommendations. On Tuesday, The Washington Post reported that the committee will examine whether the childhood vaccine schedule as a whole is causing allergies and autoimmune diseases, something Kennedy and his anti-vaccine organization have long floated despite evidence refuting a link.

Under clear attack are aluminum salt adjuvants, which are used in many vaccines to help spur protective immune responses. Aluminum salts have been used safely in vaccines for more than 70 years. The FDA notes that the most common source of aluminum exposure is from food and water, not vaccines.

Meet CDC’s new lead vaccine advisor who thinks shots cause heart disease Read More »

RFK Jr.’s new CDC deputy director prefers “natural immunity” over vaccines

anti-vaccine, CDC, health, public health, ralph abraham, Robert F Kenned Jr., vaccine / Kris Guyer / November 26, 2025

Under ardent anti-vaccine Health Secretary Robert F. Kennedy Jr., the Centers for Disease Control and Prevention has named Louisiana Surgeon General Ralph Abraham as its new principal deputy director—a choice that was immediately called “dangerous” and “irresponsible,” yet not as bad as it could have been, by experts.

Physician Jeremy Faust revealed the appointment in his newsletter Inside Medicine yesterday, which was subsequently confirmed by journalists. Faust noted that a CDC source told him, “I heard way worse names floated,” and although Abraham’s views are “probably pretty terrible,” he at least has had relevant experience running a public health system, unlike other current leaders of the agency.

But Abraham hasn’t exactly been running a health system the way most public health experts would recommend. Under Abraham’s leadership, the Louisiana health department waited months to inform residents about a deadly whooping cough (pertussis) outbreak. He also has a clear record of anti-vaccine views. Earlier this year, he told a Louisiana news outlet he doesn’t recommend COVID-19 vaccines because “I prefer natural immunity.” In February, he ordered the health department to stop promoting mass vaccinations, including flu shots, and barred staff from running seasonal vaccine campaigns.

RFK Jr.’s new CDC deputy director prefers “natural immunity” over vaccines Read More »

As shutdown ends, dubious CDC panel gets back to dismantling vaccine schedule

ACIP, american academy of pediatrics, anti-vaccine, CDC, health, hepatitis B, kennedy, robert f kennedy jr, vaccines / Tim Belzer / November 14, 2025

Nevertheless, Kennedy’s ACIP members planned to push the first dose back a month. A vote was prepared to recommend not giving a birth dose unless there was “individual based decision-making.” While at first the panel seemed poised to vote in favor of the change, the plan collapsed with basic questioning.

Voting ACIP member Joseph Hibbeln, a psychiatrist, noted: “I’m unclear if we’ve been presented with any safety or data comparing before one month to after one month,” he said. They had not.

“And,” Hibbeln continued, “I’m wondering why one month was selected as our time point and if there are data to help to inform us if there’s greater risk of adverse effects before one month or after one month at all.”

There is no data suggesting that such a move would be more or less safe.

The discussion quickly spiraled from there with an eventual vote of 11-1 to table voting on the vaccine recommendation. According to the Federal Register notice, ACIP will try to take up the topic again. They could revive the vote or attack some other aspect of vaccine recommendations.

Pediatricians fight back

Health experts have blasted Kennedy’s lineup and their attacks on childhood vaccines, including the hepatitis B vaccination schedule. The current schedule “remains the best protection against serious health problems like liver disease and cancer,” the American Academy of Pediatrics emphasized to Ars.

With ACIP’s standing tarnished under Kennedy, AAP has put forth its own evidence-based vaccine schedule for pediatricians to trust. They’ve also been a prominent opponent among medical organizations to Kennedy’s efforts. For instance, in a revised federal lawsuit, the AAP along with other medical organizations is seeking to overturn all decisions made by Kennedy’s ACIP and replace the entire panel with actual experts.

Kennedy’s appointees “lack the credentials and experience required of their role,” and all their votes should be declared “null and void,” the organization said.

AAP President Susan Kressly said that pediatricians are already seeing the effects of having an anti-vaccine activist as the US health secretary, namely “fear, decreased vaccine confidence, and barriers for families to access vaccines.”

“The nation’s children are already paying the price in avoidable illnesses and hospitalizations,” Kressly said. “We urge federal leaders to restore the science-based deliberative process that has made the United States a global leader in public health. Urgent action is needed.”

As shutdown ends, dubious CDC panel gets back to dismantling vaccine schedule Read More »

Measles outbreak in SC sends 150 unvaccinated kids into 21-day quarantine

anti-vaccine, health, measles, MMR, outbreak, public health, South Carolina, vaccine / Mike M. / October 13, 2025

Health officials in South Carolina are warning that the highly infectious measles virus is spreading undetected in communities in the northern part of the state, specifically Spartanburg and Greenville counties.

Last week, officials in Greenville identified an eighth measles case that is potentially linked to the outbreak. Seven outbreak cases had been confirmed since September 25 in neighboring Spartanburg, where transmission was identified in two schools: Fairforest Elementary and Global Academy, a public charter school.

Across those two schools, at least 153 unvaccinated children were exposed to the virus and have been put in a 21-day quarantine, during which they are barred from attending school, state officials said in a press conference. Twenty-one days is the maximum incubation period, spanning from when a person is exposed to when they would develop a rash if infected.

It’s unclear how the latest case in Greenville became infected with the virus and how they may link to the nearby Spartanburg cases.

“What this case tells us is that there is active, unrecognized community transmission of measles occurring in the Upstate [northern region of South Carolina], which makes it vital to ensure that the public have received their measles vaccinations,” the South Carolina Department of Public Health said in an announcement.

The two recommended doses of the measles, mumps, and rubella (MMR) vaccine are about 97 percent effective at blocking the infection, and that protection is considered lifelong. Without that protection, the virus is extremely contagious, infecting 90 percent of unvaccinated people who are exposed. The virus spreads easily through the air, lingering in the airspace of a room for up to two hours after an infected person has left.

Measles outbreak in SC sends 150 unvaccinated kids into 21-day quarantine Read More »

Childhood vaccines safe for a little longer as CDC cancels advisory meeting

ACIP, anti-vaccine, CDC, health, rfk jr, vaccines / Kris Guyer / October 11, 2025

An October meeting of a key federal vaccine advisory committee has been canceled without explanation, sparing the evidence-based childhood vaccination schedule from more erosion—at least for now.

The Advisory Committee on Immunization Practices (ACIP) for the Centers for Disease Control and Prevention was planning to meet on October 22 and 23, which would have been the committee’s fourth meeting this year. But the meeting schedule was updated in the past week to remove those dates and replace them with “2025 meeting, TBD.”

Ars Technica contacted the Department of Health and Human Services to ask why the meeting was canceled. HHS press secretary Emily Hilliard offered no explanation, only saying that the “official meeting dates and agenda items will be posted on the website once finalized.”

ACIP is tasked with publicly reviewing and evaluating the wealth of safety and efficacy data on vaccines and then offering evidence-based recommendations for their use. Once the committee’s recommendations are adopted by the CDC, they set national vaccination standards for children and establish which shots federal programs and private insurance companies are required to fully cover.

In the past, the committee has been stacked with highly esteemed, thoroughly vetted medical experts, who diligently conducted their somewhat esoteric work on immunization policy with little fanfare. That changed when ardent anti-vaccine activist Robert F. Kennedy Jr. became health secretary. In June, Kennedy abruptly and unilaterally fired all 17 ACIP members, falsely accusing them of being riddled with conflicts of interest. He then installed his own hand-selected members. With the exception of one advisor—pediatrician and veteran ACIP member Cody Meissner—the members are poorly qualified, have gone through little vetting, and embrace the same anti-vaccine and dangerous fringe ideas as Kennedy.

Corrupted committee

So far this year, Kennedy’s advisors have met twice, producing chaotic meetings during which members revealed a clear lack of understanding of the data at hand and the process of setting vaccine recommendations, all while setting policy decisions long sought by anti-vaccine activists. The first meeting, in June, included seven members selected by Kennedy. In that meeting, the committee rescinded the recommendation for flu vaccines containing a preservative called thimerosal based on false claims from anti-vaccine groups that it causes autism. The panel also ominously said it would re-evaluate the entire childhood vaccination schedule, putting life-saving shots at risk.

Childhood vaccines safe for a little longer as CDC cancels advisory meeting Read More »

Anti-vaccine allies cheer as Trump claims shots have “too much liquid”

anti-vaccine, antigens, health, Trump, tylenol, vaccines / Mike M. / September 24, 2025

Why babies don’t pop like water balloons when they get vaccines—and other info for Trump.

President Donald Trump, flanked by senior health officials, speaks during a news conference on September 22, 2025 inside the Roosevelt Room at The White House in Washington. Credit: Getty | Tom Brenner

When the bar is set at suggesting that people inject bleach into their veins, it’s hard to reach a new low. But in a deranged press event on autism Monday evening, President Trump seemed to go for it—sharing “rumors” and his “strong feelings” not just on Tylenol but also his bonkers views on childhood vaccines.

Trump was there with his health secretary, anti-vaccine activist Robert F. Kennedy Jr., to link autism to the use of Tylenol (acetaminophen) during pregnancy. While medical experts condemn the claim as unproven and dangerous (which it is), Kennedy’s anti-vaccine followers decried it as a distraction from their favored false and dangerous explanation—that vaccines cause autism (which they don’t).

Pinning the blame on Tylenol instead of vaccines enraged Kennedy’s own anti-vaccine organization, Children’s Health Defense. In the run-up to the event Monday evening, CHD retweeted an all-caps defense of Tylenol, and CHD President Mary Holland called the announcement a “sideshow” in an interview with Steve Bannon.

But fear not. The rift was short-lived, as their big feelings were soothed mere minutes into Monday’s event. After smearing Tylenol, the president’s unscripted remarks quickly veered into an incoherent rant linking vaccines to autism as well.

At one point in his comments, he rattled off a list of anti-vaccine activists’ most vilified vaccine components (mercury and aluminum). But his attack largely ignored the content of vaccines and instead surprisingly focused on volume. Overall, his comments were incoherent, but again and again, he seemed to swirl back to this bizarre concern.

Wut?

If you piece together Trump’s sentence- and thought-fragments, his comments created a horrifying picture of what he thinks childhood vaccinations look like:

They pump so much stuff into those beautiful little babies. It’s a disgrace. I don’t see it. I think it is very bad. They’re pumping. It looks like they’re pumping into a horse. You have a little child, little fragile child, and you get a vat of 80 different vaccines, I guess, 80 different blends and they pump it in.

It seemed that Trump’s personal solution to this imagined problem is to space out and delay vaccines so they are not given at one time:

Break it up because it’s too much liquid. Too many different things are going into that baby at too big a number. The size of this thing, when you look at it, it’s like 80 different vaccines and beyond vaccines and 80. Then you give that to a little kid.

From Trump’s loony descriptions, you might be imagining an evil cartoon doctor wielding a bazooka-sized syringe and cackling maniacally while injecting a baby with a vat’s worth of 80 different vaccines until it inflates like a water balloon ready to burst.

But this cuckoo take is not how childhood vaccinations go in routine well-baby doctor’s visits. First, most vaccines have a volume of 0.5 milliliters, which is about a tenth of a teaspoon. And babies and children do not get 80 different vaccines ever, let alone at one time. In fact, no recommendations would see anyone get 80 different types of vaccines cumulatively.

By age 18, it’s recommended that people get vaccinated against 17 diseases, including seasonal flu and COVID-19. And some vaccines are combination shots, knocking out three or four diseases with one injection, such as the measles, mumps, rubella (MMR) vaccine or the Diphtheria, tetanus, & acellular pertussis (DTaP) vaccine. And again, even those combination shots are 0.5 mL total.

Modern vaccines

Trump’s claim of 80 vaccines doesn’t even stand up when you count vaccine doses rather than different vaccines. Some childhood vaccines require multiple doses—MMR is given in two doses, and DTaP is a five-dose series, for example. According to current recommendations, by age 18, kids should have 36 vaccine doses against childhood diseases. If you add in a flu shot every year, that’s 54 doses. If you add in a COVID-19 vaccine every year, that’s 72.

While 72 might seem like a big number, again, that’s spread out over 18 years and includes seasonal shots. And medical experts point to another key fact—the vaccines that children get today are much more streamlined and efficient than vaccines of yore. A helpful myth-busting info sheet from experts with Yale’s School of Public Health points out that in the mid-1980s, children under age 2 were vaccinated against seven diseases, but those old-school vaccines included more than 3,000 germ components that can spur immune responses (aka antigens). Today, children under age 2 get vaccinated against 15 diseases, but today’s more sophisticated vaccine designs include just 180 antigens, making the protection more targeted and reducing the risk of errant immune responses.

In all, the facts should dash any worries of nefarious doctors inflating children with vast volumes of noxious concoctions. But for those who may hew closely to the cautionary principle, Trump’s “space the shots out” plan may still seem reasonable. It’s not.

At most, children might get five or six vaccines at one time. But again, the number of antigens in those shots is far lower than those in vaccines children received decades ago. And the number of antigens in those vaccines is just a fraction of the number kids are exposed to every day just from their environments. If you’ve ever watched a kindergartener touch every surface and object in a classroom and then shove their fingers in their nose and mouth, you understand the point.

Vaccinations don’t overwhelm children’s immune systems. And there’s no evidence that spacing them out avoids any of the very small risks they pose.

Data against dogma

After Trump shared his personal feelings about vaccines, the American Academy of Pediatrics rushed to release a statement, first refuting any link between vaccines and autism and then warning against spacing out vaccine doses.

“Pediatricians know firsthand that children’s immune systems perform better after vaccination against serious, contagious diseases like polio, measles, whooping cough, and hepatitis B,” the AAP said. “Spacing out or delaying vaccines means children will not have immunity against these diseases at times when they are most at risk.”

Such messages make no impact on the impervious dogma of anti-vaccine activists, of course. While medical experts and organizations like AAP scrambled to combat the misinformation and assure pregnant people and parents that Tylenol was still safe and vaccines don’t cause autism, anti-vaccine activists cheered Trump’s comments.

“We knew today was going to be about acetaminophen,” CHD President Mary Holland said, speaking on Bannon’s podcast again after the event. “We didn’t know if he’d touch on vaccines—and he was all over it. It was an amazing, amazing speech.

“I’m happy to say he basically gave parents permission not to vaccinate their kids—and definitely not to take Tylenol.”

In a new pop-up message on Tylenol’s website, the maker of the common pain reliever and fever reducer pushed back on Trump’s feelings.

Tylenol is one of the most studied medications in history–and is safe when used as directed by expecting mothers, infants, and children.

The facts remain unchanged: over a decade of rigorous research, endorsed by leading medical professionals, confirm there is no credible evidence linking acetaminophen to autism.

The same is true for vaccines.

Anti-vaccine allies cheer as Trump claims shots have “too much liquid” Read More »

Anti-vaccine groups melt down over reports RFK Jr. to link autism to Tylenol

anti-vaccine, autism, children's health defense, health, robert f kennedy jr, tylenol, vaccines / Mike M. / September 22, 2025

Results of this study indicate that the association between acetaminophen use during pregnancy and neurodevelopmental disorders is a noncausal association. Birthing parents with higher acetaminophen use differed in many aspects from those with lower use or no use. Results suggested that there was not one single “smoking gun” confounder, but rather that multiple birthing parents’ health and sociodemographic characteristics each explained at least part of the apparent association. The null results of the sibling control analyses indicate that shared familial confounders were involved, but do not identify the specific confounding factors.

Critical factors

Another factor to consider is that untreated fevers, and/or prolonged fevers during pregnancy—reasons to take Tylenol in the first place—are linked to increased risks of autism. And, as the Society for Maternal-Fetal Medicine pointed out earlier this month, untreated fever and pain during pregnancy carry other significant risks for both the mother and the pregnancy.

“Untreated fever, particularly in the first trimester, increases the risk of miscarriage, birth defects, and premature birth, and untreated pain can lead to maternal depression, anxiety, and high blood pressure,” SMFM noted.

With no clear evidence supporting a link between acetaminophen and autism, doctors highlight another fold in the issue: Acetaminophen is considered the safest pain reliever/fever-reducer during pregnancy. Nonsteroidal anti-inflammatory medications (also called NSAIDS), such as ibuprofen (Advil) and aspirin, can cause reduced blood flow, heart problems, and kidney problems in a fetus.

After The Wall Street Journal’s report of Kennedy’s plans, the American College of Obstetricians and Gynecologists (ACOG) reiterated its guidance for acetaminophen during pregnancy, writing on social media:

Acetaminophen remains a safe, trusted option for pain relief during pregnancy. Despite recent unfounded claims, there’s no clear evidence linking prudent use to issues with fetal development. ACOG’s guidance remains the same. When pain relief is needed during pregnancy, acetaminophen should be used in moderation, and after consulting your doctor.

Christopher Zahn, ACOG’s chief of clinical practice, put it more plainly, saying: “Pregnant patients should not be frightened away from the many benefits of acetaminophen, which is safe and one of the few options pregnant people have for pain relief.”

Anti-vaccine groups melt down over reports RFK Jr. to link autism to Tylenol Read More »

RFK Jr. adds more anti-vaccine members to CDC vaccine advisory panel

ACIP, anti-vaccine, CDC, COVID-19 vaccines, health, hepatitis B, measles, robert f kennedy jr / Kris Guyer / September 16, 2025

Kirk Milhoan, a pediatric cardiologist who is a senior fellow at the Independent Medical Alliance (formerly Front Line COVID-19 Critical Care Alliance), which promotes misinformation about COVID-19 vaccines and touts unproven and dubious COVID-19 treatments. Those include the malaria drug hydroxychloroquine, the de-worming drug ivermectin, and various concoctions of vitamins and other drugs. Milhoan has stated that mRNA COVID-19 vaccines should be removed from the market, telling KFF in March: “We should stop it and test it more before we move forward.”

Evelyn Griffin, an obstetrician and gynecologist in Louisiana who reportedly lost her job for refusing to get a COVID-19 vaccine. In a speech at a Louisiana Health Freedom Day in May 2024, Griffin claimed that doctors “blindly believed” that mRNA COVID-19 vaccines were safe. She has also claimed that the vaccines cause “bizarre and rare conditions,” according to the Post.

Hillary Blackburn, a pharmacist in St. Louis. Reuters reports that she is the daughter-in-law of Sen. Marsha Blackburn (R-Tenn.), who has opposed vaccine mandates.

Raymond Pollak, a semi-retired transplant surgeon who filed a whistleblower lawsuit against the University of Illinois Hospital in 1999, alleging the hospital manipulated patient data to increase their chances of receiving livers. The hospital settled the suit, paying $2.5 million, while denying wrongdoing.

ACIP is scheduled to meet at the end of this week, on September 18 and September 19. According to an agenda recently posted online, the committee will vote on recommendations for a measles, mumps, rubella, and varicella (MMRV) combination vaccine, the Hepatitis B vaccine, and this year’s updated COVID-19 vaccines. Vaccine experts widely fear that the committee will rescind recommendations and restrict access to those vaccines. Such moves will likely create new, potentially insurmountable barriers for people, including children, to get vaccines.

ACIP-recommended vaccines are required to be covered by private health insurance plans and the Vaccines for Children program for Medicaid-eligible and under- or uninsured kids, which covers about half of American children. Without ACIP recommendations for a vaccine, insurance coverage would be an open question, and vulnerable children would simply lose access entirely.

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Top pediatricians buck RFK Jr.’s anti-vaccine meddling on COVID shot guidance

aap, american academy of pediatrics, anti-vaccine, CDC, childhood vaccines, COVID-19, COVID-19 vaccines, health, kennedy, robert f kennedy jr, vaccines / Paul Patrick / August 20, 2025

“It’s clear that we’re in a different place in the pandemic than we were four or five years ago in terms of risks to healthy older kids,” Sean O’Leary, chair of the AAP Committee on Infectious Diseases (COID), said in a statement. However, “the risk of hospitalization for young children and those with high-risk conditions remains pretty high.”

According to CDC data, the rate of COVID-19 hospitalization in children under 2 is the highest among any pediatric group. Further, the rate of hospitalization among children 6 months to 23 months is comparable to that of adults ages 50 to 64. Critically, more than half of children ages 6 months to 23 months who are hospitalized for COVID-19 have no underlying medical condition that puts them at high risk for severe infection.

For children 2 to 18, the AAP recommends COVID-19 shots for children who have a medical condition that puts them at high risk, are residents of care facilities, have never been vaccinated, or have household contacts who are at high risk of severe COVID-19. All other children and teens should also have access to updated seasonal shots if they desire them, the AAP says.

“The AAP will continue to provide recommendations for immunizations that are rooted in science and are in the best interest of the health of infants, children, and adolescents,” Kressly said. “Pediatricians know how important routine childhood immunizations are in keeping children, families, and their communities healthy and thriving.”

Coverage questions

With school starting, COVID-19 cases ticking up around the country, and cold-weather respiratory virus season looming, the question now is how the conflicting recommendations will be interpreted by insurance companies. Insurers are required to cover vaccines recommended by the CDC. But there is no such obligation for recommendations from medical groups.

AAP has been holding meetings with insurers to press for continued coverage of evidence-based vaccine recommendations.

O’Leary told The Washington Post that insurers are “signaling that they are committed to covering our recommendations.” The Post also noted that AHIP, the major insurance lobby, released a statement in June saying its members are committed to “ongoing coverage of vaccines to ensure access and affordability for this respiratory virus season.”

Top pediatricians buck RFK Jr.’s anti-vaccine meddling on COVID shot guidance Read More »

Anti-vaccine RFK Jr. creates vaccine panel of anti-vaccine group’s dreams

anti-vaccine, childhood vaccines, health, mRNA, robert f kennedy jr, vaccines / Kris Guyer / August 16, 2025

Immediate concern

It’s possible that Kennedy did not immediately set up the task force because the necessary leadership was not in place. The 1986 law says the task force “shall consist of consist of the Director of the National Institutes of Health, the Commissioner of the Food and Drug Administration, and the Director of the Centers for Disease Control [and Prevention].” But a CDC director was only confirmed and sworn in at the end of July.

With Susan Monarez now at the helm at CDC, the Department of Health and Human Services said Thursday that the task force is being revived, though it will be led by the NIH.

“By reinstating this Task Force, we are reaffirming our commitment to rigorous science, continuous improvement, and the trust of American families,” NIH Director Jay Bhattacharya said in the announcement. “NIH is proud to lead this effort to advance vaccine safety and support innovation that protects children without compromise.”

Kennedy’s anti-vaccine group cheered the move on social media, saying it was “grateful” that Kennedy was fulfilling his duty.

Outside health experts were immediately concerned by the move.

“What I am concerned about is making sure that we don’t overemphasize very small risks [of vaccines] and underestimate the real risk of infectious diseases and cancers that these vaccines help prevent,” Anne Zink, Alaska’s former chief medical officer, told The Washington Post.

David Higgins, a pediatrician and preventive medicine specialist at the University of Colorado Anschutz Medical Campus, worried about eroding trust in vaccines, telling the Post, “I am concerned that bringing this committee back implies to the public that we have not been looking at vaccine safety. The reality is, we evaluate the safety of vaccines more than any other medication, medical intervention, or supplements available.”

Paul Offit, a vaccine expert at Children’s Hospital of Philadelphia, worried about a more direct attack on vaccines, telling CNN, “Robert F. Kennedy Jr. is an anti-vaccine activist who has these fixed, immutable, science-resistant beliefs that vaccines are dangerous. He is in a position now to be able to set up task forces like this one [that] will find some way to support his notion that vaccines are doing more harm than good.”

Anti-vaccine RFK Jr. creates vaccine panel of anti-vaccine group’s dreams Read More »

Large study squashes anti-vaccine talking points about aluminum

ACIP, aluminum, anti-vaccine, health, robert f kennedy jr, vaccine / Mike M. / July 16, 2025

A sweeping analysis of health data from more than 1.2 million children in Denmark born over a 24-year period found no link between the small amounts of aluminum in vaccines and a wide range of health conditions—including asthma, allergies, eczema, autism, and attention deficit-hyperactivity disorder (ADHD).

The finding, published in the Annals of Internal Medicine, firmly squashes a persistent anti-vaccine talking point that can give vaccine-hesitant parents pause.

Small amounts of aluminum salts have been added to vaccines for decades as adjuvants, that is, components of the vaccine that help drum up protective immune responses against a target germ. Aluminum adjuvants can be found in a variety of vaccines, including those against diphtheria, tetanus, and pertussis, Haemophilus influenzae type b (Hib), and hepatitis A and B.

Despite decades of use worldwide and no clear link to harms, concern about aluminum and cumulative exposures continually resurfaces—largely thanks to anti-vaccine advocates who fearmonger about the element. A leader of such voices is Robert F. Kennedy Jr, the current US health secretary and an ardent anti-vaccine advocate.

In a June 2024 interview with podcaster Joe Rogan, Kennedy falsely claimed that aluminum is “extremely neurotoxic” and “give[s] you allergies.” The podcast has racked up nearly 2 million views on YouTube. Likewise, Children’s Health Defense, the rabid anti-vaccine organization Kennedy created in 2018, has also made wild claims about the safety of aluminum adjuvants. That includes linking it to autism, despite that many high-quality scientific studies have found no link between any vaccines and autism.

While anti-vaccine advocates like Kennedy routinely dismiss and attack the plethora of studies that do not support their dangerous claims, the new study should reassure any hesitant parents.

Clear data, unclear future

For the study, lead author Niklas Worm Andersson, of the Statens Serum Institut in Copenhagen, and colleagues tapped into Denmark’s national registry to analyze medical records of over 1.2 million children born in the country between 1997 and 2018. During that time, new vaccines were introduced and recommendations shifted, creating variation in how many aluminum-containing vaccines children received.

Large study squashes anti-vaccine talking points about aluminum Read More »