Fact-check analysisVerified as of October 27, 2026Curated by FactVerifyPrimary Source Verified
Misleading

Aaron Siri stated that a vaccinated versus unvaccinated study from Henry Ford Medical Center was suppressed because it showed unvaccinated children were healthier.

Claims that a Henry Ford Medical Center study showing unvaccinated children are healthier was 'buried' and revealed by Aaron Siri are based on an unpublished, non-peer-reviewed study with significant methodological flaws and lack of independent verification.

Authors of ‘Astonishing’ Study Showing Unvaccinated Kids Are Healthier Refused to Go Public With Results • Children's Health Defense

Authors of ‘Astonishing’ Study Showing Unvaccinated Kids Are Healthier Refused to Go Public With Results • Children's Health Defense

Source: childrenshealthdefense.org

At a glance

Key Evidence

Verified October 27, 2026
The reporting

What the Evidence Shows

The claim originates from statements by attorney Aaron Siri during a U.S. Senate hearing, referencing a large Henry Ford Health System birth cohort study reportedly tracking 18,468 children over 10 years. The study allegedly found vaccinated children had higher rates of chronic illness and neurodevelopmental disorders compared to unvaccinated children.childrenshealthdefense.orgchildrenshealthdefense.orgAuthors of ‘Astonishing’ Study Showing Unvaccinated Kids Are Healthier Refused...thefocalpoints.comthefocalpoints.comBREAKING: Henry Ford Birth Cohort: Vaxxed vs. Unvaxxed, Reported Vaccinated Kids...+1 more

This study has not been published in any peer-reviewed journal, nor has it undergone scientific scrutiny. The authors reportedly refused to go public with the results, and the data or methodology have not been independently verified.debatepolitics.comdebatepolitics.comAuthors of ‘Astonishing’ Study Showing Unvaccinated Kids Are Healthier Refused...publichealthpolicyjournal.compublichealthpolicyjournal.comAuthors of ‘Astonishing’ Study Showing Unvaccinated Kids Are Healthier Refused...+1 more

Independent fact-checkers and scientific reviewers have identified significant methodological flaws in the cited study, including use of dubious metrics for disease incidence comparison and failure to control for confounding factors such as socioeconomic status, healthcare access, and pre-existing conditions.science.feedback.orgscience.feedback.orgStudy on vaccinated and unvaccinated children used a dubious metric for...science.feedback.orgscience.feedback.orgSignificant methodological flaws in a 2020 study claiming to show unvaccinated...

Larger, reputable epidemiological studies consistently find no greater incidence of adverse health outcomes in vaccinated children compared to unvaccinated children. Public health authorities continue to recommend vaccination based on extensive evidence of safety and efficacy.publichealthcollaborative.orgpublichealthcollaborative.orgPost claims unvaccinated children are healthier than vaccinated children+2 more

The narrative that the study was 'buried' or deliberately hidden is based on anecdotal claims without corroborating evidence. There is no official confirmation from Henry Ford Health System or independent scientific bodies that such suppression occurred.x.comx.comDavid Sunfellow on X: "GROK, what study is Del Bigtree referring to here? Who...

Social media posts by individuals like Dr. Peter McCullough amplify these claims but do not provide access to the underlying data or peer-reviewed publication.x.comx.comPeter A. McCullough, MD, MPH® on X: "BREAKING: Henry Ford Birth Cohort Study:...

In summary, while Aaron Siri has publicly discussed an unpublished Henry Ford study suggesting unvaccinated children are healthier, the claim that this study was 'buried' is unsubstantiated. The study itself lacks peer review and has been criticized for serious methodological issues. Therefore, the assertion is misleading without stronger evidence.

Primary trail

Verified Sources10

Peter A. McCullough, MD, MPH® on X: "BREAKING: Henry Ford Birth Cohort Study:...Primary Source Extraction

x.com
Open source
Verified Document Excerpts
"Heading: Rinse and repeat: US vaccine hearing on unpublished study debates same myths Henry Ford Health’s communications office did not respond to a request for comment in time for publication, but later sent over the following statement via a spokesperson: “This report was not published because it did not meet the rigorous scientific standards we demand as a premier medical research institution. Data has consistently shown vaccinations are a safe and effective way to protect children against potentially life-altering diseases.”"
"Heading: Rinse and repeat: US vaccine hearing on unpublished study debates same myths A congressional hearing on Tuesday titled “How the Corruption of Science Has Impacted Public Perception and Policies Regarding Vaccines” largely consisted of a debate over an unpublished study comparing chronic illnesses in children who received vaccines with those who didn’t. The study was lead-authored by Marcus Zervos of Henry Ford Health, completed in 2020, and never submitted for publication, according to testimony during the hearing. Senator Ron Johnson, the chair of the subcommittee for the hearing, and the witness Aaron Siri, a lawyer who has represented RFK Jr and the anti-vaccination non-profit Informed Consent Action Network, both claimed the study was not submitted because the authors would lose their jobs were it to be published."

David Sunfellow on X: "GROK, what study is Del Bigtree referring to here? Who...

x.com
Open source

Authors of ‘Astonishing’ Study Showing Unvaccinated Kids Are Healthier Refused...Primary Source Extraction

childrenshealthdefense.org
Open source
Verified Document Excerpts
"Heading: Henry Ford Health didn't publish a vaccine study. Was it "buried" or just "rejected science"? The (unpublished) study, and how it came to light The study, completed in 2020 by researchers at Henry Ford Health and the Wayne State University School of Medicine, was titled “Impact of Childhood Vaccination on Short and Long-Term Chronic Health Outcomes in Children: A Birth Cohort Study.” It looked at more than 18,000 children born at Henry Ford hospital from 2000-2016, and divided them into two groups: a group that had received one or more vaccines, and another (much smaller) group that had received no vaccines at all."
"Heading: Henry Ford Health didn't publish a vaccine study. Was it "buried" or just "rejected science"? There’s a final dramatic twist here, and it ties back to attorney Aaron Siri, who testified at the Senate committee hearing. He’s connected to a group called the Informed Consent Action Network, which crusades against vaccine mandates and vaccines in general. And they recently put out a documentary called “An Inconvenient Study,” based on the idea that the Henry Ford study was deliberately suppressed because it showed that vaccines do cause harm."
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