A Henry Ford Health System study (a birth-cohort analysis of about 18,468 children enrolled from birth) that circulated publicly in 2025 claims that vaccinated children had a higher incidence of several chronic conditions (the authors reported an overall ~4-fold association driven by asthma, atopy/eczema, some autoimmune and some neurodevelopmental diagnoses). The study was entered into the public record during a September 9, 2025 Senate hearing titled “How the Corruption of Science has Impacted Public Perception and Policies Regarding Vaccines”: https://www.youtube.com/watch?v=ZrQuPPMOp4U
Posted by -Joel-Snape-
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>A Henry Ford Health System study
[Incorrect](https://www.henryford.com/news/2025/09/vaccine-study-henry-ford-health)
>There are many factors that determine whether a research paper should be submitted for consideration by scientific journals or otherwise shared with the public. In this case, a 2020 draft of a paper that aimed to compare health outcomes for vaccinated and unvaccinated children was immediately shelved upon the first internal peer review **because of serious issues with its data and methodology**. Those flaws included:
>The unvaccinated patient sample was vastly different than the vaccinated sample, with more males, more white children, less prematurity and less respiratory distress at birth.
>The unvaccinated sample was very small in comparison to the vaccinated sample.
>The amount of time measuring occurrence of disease was much shorter for the unvaccinated children. One quarter were observed only through six months of age, and 75% were only observed up until age 3, which is before doctors can confidently diagnose chronic pediatric diseases.
>The draft compared multiple vaccines vs. no vaccines, instead of a specific vaccine vs. no [vaccines.No](http://vaccines.No) consideration was given to the number of vaccines or the duration of time between vaccines and the occurrence of disease.
>Vaccine guidance has changed over time, but that was not taken into consideration.