Hidden Vaccine Study Revealed in U.S. Senate Testimony
Today, the U.S. Senate’s Permanent Subcommittee on Investigations held a hearing titled “How the Corruption of Science Has Impacted Public Perception and Policies Regarding Vaccines.” One of the most startling moments came from attorney Aaron Siri, who presented under oath the findings of a massive but long-hidden study conducted by the Henry Ford Health System in Detroit, Michigan.
According to Siri, this is the largest vaccinated vs. unvaccinated birth cohort study ever undertaken in the United States, tracking 18,468 children from birth over a ten-year period. Unlike survey-based or self-reported data, the study drew directly from electronic medical records — considered the “gold standard” for real-world health outcomes. Its official title: “Impact of Childhood Vaccination on Short- and Long-Term Chronic Health Outcomes in Children: A Birth Cohort Study.”
What the Study Found
Siri testified that vaccinated children were far more likely to suffer from chronic illness than their unvaccinated peers — and that these results were statistically significant:
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329% more asthma
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203% more atopic disease
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496% more autoimmune disease
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453% more neurodevelopmental disorders
• 228% more developmental delays
• 347% more speech disorders
Even more alarming, in conditions where unvaccinated children showed zero cases — such as brain dysfunction, ADHD, learning disabilities, intellectual disabilities, and tics — there were hundreds of documented cases among vaccinated children.
The long-term bottom line:
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57% of vaccinated children developed at least one chronic health condition (often multiple).
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Only 17% of unvaccinated children did.
Why the Study Matters
The Henry Ford cohort analysis may prove to be the most important vaccine safety study ever conducted. And yet, as Siri emphasized, the study remains unpublished and largely hidden from public view. Critics have long claimed that such large-scale comparisons were impossible, yet this data shows otherwise.
Independent voices have already begun amplifying its significance. The Informed Consent Action Network (ICAN), led by Del Bigtree, has produced a new documentary titled “An Inconvenient Study” to spotlight the findings. Meanwhile, outlets like TrialSite News have covered the Senate hearing and noted how it fits into broader concerns about transparency in public health.
This testimony also echoes themes from earlier debates — for example, a 2022 analysis published in Frontiers in Public Health raised similar questions about chronic conditions and vaccination, though with smaller sample sizes. The Henry Ford study, by comparison, dwarfs previous efforts.
Public Trust and the “Corruption of Science”
The hearing itself was framed around how the politicization of science erodes public trust. According to subcommittee materials, the panel investigated whether health agencies have ignored inconvenient data in favor of predetermined narratives.
Aaron Siri’s sworn presentation adds to that concern. If such a large, ten-year study exists — and shows results so out of step with the prevailing message — why hasn’t the public been allowed to examine it?
The Road Ahead
With two-thirds of Americans in recent polls already skeptical of government transparency in health policy, these revelations are likely to intensify demands for accountability. Whether or not one accepts the conclusions, the Senate testimony has made the Henry Ford data impossible to ignore.
For now, the study remains unpublished, but its existence — and the extraordinary disparities it revealed — may reshape the vaccine debate for years to come.
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