DoubleChecks

What was claimed

Vaccinated children suffer 22X higher chronic disease rates than unvaccinated (autism +180%, neurodevelopmental disorders +1,254%, autoimmune +1,120%, etc.) according to major peer-reviewed reanalysis of vaxxed vs unvaxxed study.

Our verdict

Needs caution

The +180% figure is taken from the disputed reanalysis which used unconventional groupings and calculations; higher‑quality large cohort studies and major health agencies do not support an increased autism risk from routine childhood vaccination. There is a self-described peer-reviewed reanalysis of the Henry Ford birth cohort study published in a niche journal and promoted by activists, which claims vaccinated children are sicker across all 22 chronic disease categories and highlights large proportional increases. However, the source study itself was an unpublished draft that Henry Ford Health later repudiated for serious flaws, and independent experts and mainstream institutions do not recognize this reanalysis as major or authoritative, making the appeal to "major peer-reviewed" status misleading about its scientific weight and acceptance.

1 of 3 AI systems agree15 sources citedChecked Aug 19, 2026

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Key findings

These figures come from a major peer-reviewed reanalysis of a vaxxed vs unvaxxed study (the Henry Ford birth cohort study)

Misleading89%
2 of 3 AIs agree·ChatGPT: Incorrect

Neurodevelopmental disorders +1,254% in vaccinated vs unvaccinated (from that reanalysis).

Misleading90%
3 of 4 AIs agree·Claude: Incorrect

The reanalysis compares vaccinated and unvaccinated children and finds higher rates of chronic disease in all 22 categories among vaccinated children

Can’t verify63%
3 of 7 AIs agree·Claude: Incorrect, ChatGPT: Incorrect, Perplexity: Incorrect, Perplexity: Verified

Neurodevelopmental disorders +1,254% and autoimmune +1,120%

Can’t verify65%
1 AI checked

Verified against 15 sources

publichealthpolicyjournal.comyahoo.comlinkedin.comijvtpr.comhsgac.senate.govtheconversation.comthevaultproject.orgx.comprincipia-scientific.comx.compubmed.ncbi.nlm.nih.govpmc.ncbi.nlm.nih.govchop.edupmc.ncbi.nlm.nih.govoatext.com

Detailed Analysis

The specific percentages and 22x figure match claims circulating in activist and social media commentary on the Henry Ford birth cohort reanalysis, but they are not supported by the underlying study or by mainstream medical consensus. The original Henry Ford analysis and external expert reviews report an overall ~2.5x increase in chronic disease risk, not 22x, and authoritative sources highlight major methodological flaws and reject causal claims about vaccines causing higher chronic disease rates.

Why this verdict

  • The specific percentages and 22x figure match claims circulating in activist and social media commentary on the Henry Ford birth cohort reanalysis, but they are not supported by the underlying study or by mainstream medical consensus.
  • The original Henry Ford analysis and external expert reviews report an overall ~2.5x increase in chronic disease risk, not 22x, and authoritative sources highlight major methodological flaws and reject causal claims about vaccines causing higher chronic disease rates.

Claims checked

Vaccinated children suffer 22X higher chronic disease rates than unvaccinated

Incorrect92%
The Henry Ford birth cohort draft study and subsequent reanalysis report roughly a 2.5-fold increase in risk of any chronic condition among vaccinated children, not 22-fold, and describe certain conditions as 3–6 times higher, not 22 times higher.[2] [4] [5] [6] [7] The 22x figure appears only in activist commentary and social media amplifications, not in the peer-reviewed analysis or the original study, and is inconsistent with those reported hazard ratios.

This claim may mislead readers without added context.

These figures come from a major peer-reviewed reanalysis of a vaxxed vs unvaxxed study (the Henry Ford birth cohort study)

Misleading88%
There is a self-described peer-reviewed reanalysis of the Henry Ford birth cohort study published in a niche journal and promoted by activists, which claims vaccinated children are sicker across all 22 chronic disease categories and highlights large proportional increases.[1] [3] [4] [9] However, the source study itself was an unpublished draft that Henry Ford Health later repudiated for serious flaws, and independent experts and mainstream institutions do not recognize this reanalysis as major or authoritative, making the appeal to "major peer-reviewed" status misleading about its scientific weight and acceptance.[2] [5] [6] [7] [13]

This claim may mislead readers without added context.

Vaccinated children have autoimmune disease rates that are 1,120% higher than unvaccinated children

Can’t verify60%
Commentary around the Henry Ford study asserts very large percentage increases for autoimmune disease, but the original draft and independent biostatistical critique only describe autoimmune outcomes as about five to six times higher in vaccinated children, without publishing a 1,120% figure.[5] [6] [7] Because this specific percentage is not found in peer-reviewed tables or mainstream analyses, it cannot be reliably confirmed.

What other AI think

The claim contains multiple significant factual errors. The "22X higher" statistic is false (actual finding was 2.5X overall). The autism claim contradicts the study's own findings. The underlying study has serious methodological flaws acknowledged by experts, including detection bias that invalidates causal conclusions.

Why this verdict

  • The claim contains multiple significant factual errors.
  • The "22X higher" statistic is false (actual finding was 2.5X overall).
  • The autism claim contradicts the study's own findings.
  • The underlying study has serious methodological flaws acknowledged by experts, including detection bias that invalidates causal conclusions.

Claims checked

Vaccinated children suffer 22X higher chronic disease rates than unvaccinated

Incorrect95%
The Henry Ford study found 2.5X higher rates overall, not 22X. The reanalysis claims all 22 disease categories were higher, but not at a uniform 22X multiplier.

This claim may mislead readers without added context.

Autism +180% in vaccinated children according to the study

Incorrect95%
The study explicitly did not find higher autism rates in vaccinated children. This directly contradicts the claim.

This claim may mislead readers without added context.

This comes from a major peer-reviewed reanalysis

Misleading90%
While a reanalysis exists, experts emphasize the underlying study has serious methodological flaws, detection bias, and baseline differences that render conclusions unreliable. The reanalysis itself is disputed by biostatisticians.

This claim may mislead readers without added context.

The numerical claims come from a recent reanalysis that is widely criticized and not supported by independent, high-quality evidence. Trusted public‑health bodies and multiple fact‑checks conclude the study's methods and calculations are flawed and its large percentage increases are unreliable.

Why this verdict

  • The numerical claims come from a recent reanalysis that is widely criticized and not supported by independent, high-quality evidence.
  • Trusted public‑health bodies and multiple fact‑checks conclude the study's methods and calculations are flawed and its large percentage increases are unreliable.

Claims checked

These figures come from a 'major peer‑reviewed reanalysis'.

Incorrect92%
Although the reanalysis has been circulated and promoted online, reputable experts and fact‑checkers characterize it as methodologically flawed; its findings are not accepted as definitive by major peer communities or public‑health authorities.

This claim may mislead readers without added context.

Vaccinated children suffer 22X higher chronic disease rates than unvaccinated.

Incorrect95%
The '22×' assertion originates from a contested reanalysis of a vaccinated vs unvaccinated cohort that reviewers and fact‑checkers found methodologically unsound and not corroborated by higher‑quality studies or public‑health agencies.

This claim may mislead readers without added context.

Autism +180% in vaccinated vs unvaccinated (from that reanalysis).

Misleading90%
The +180% figure is taken from the disputed reanalysis which used unconventional groupings and calculations; higher‑quality large cohort studies and major health agencies do not support an increased autism risk from routine childhood vaccination.

This claim may mislead readers without added context.

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