Hulscher and colleagues publish a peer review of the unpublished Henry Ford vaccinated-vs-unvaccinated study
Why it matters
The Henry Ford Health birth-cohort study was discussed at the September 2025 Senate hearing, became the subject of Del Bigtree’s film “An Inconvenient Study,” and is the data Hulscher later presented to Michigan lawmakers. This paper is the written, citable version of that argument.
On December 9, 2025, John Oller Jr., Daniel Broudy and Nicolas Hulscher published “A Peer-Review of the Vaccinated vs. Unvaccinated Study Discussed at the Senate Hearing on September 9, 2025” in the International Journal of Vaccine Theory, Practice, and Research.
The paper reexamines Lamerato and colleagues’ Henry Ford Health analysis of about 18,500 children, roughly 2,000 of them unvaccinated. The authors report that exposure to one or more vaccines was associated with at least a 2.5-fold higher likelihood of a chronic health condition, and Hulscher has summarized the result as higher rates in all 22 chronic-disease categories examined, including autism.
Henry Ford Health has said its 2020 draft had serious data and methodology problems and was never submitted to a journal. Fact-checkers point out that vaccinated children in the dataset saw doctors far more often, which raises the chance of a diagnosis, and that many children were followed only to about age 3. We link the paper so readers can weigh it directly.
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