Despite Years of ICAN Demands CDC Again Fails to Produce Vaccinated v Unvaccinated Study


Parents, doctors, and scientists have, for decades, demanded that CDC compare the health outcomes between children who are vaccinated (one or more vaccines) and unvaccinated (no vaccines). This is, in part, because the increase in CDC’s childhood schedule over the last 38 years from just MMR, DTP and OPV in 1986 to at least 90 vaccine doses of at least fourteen different vaccines (as well as at least 4 doses during pregnancy) has occurred in lockstep with the increase in the rate of autoimmune, developmental, and neurological disorders in children from 12.8% to 54.1%.

The demand for this study has grown so great that in 2013 the Institute of Medicine issued a report stating that CDC could and should perform this study, explaining that it “is possible to make this comparison through analyses of patient information contained in large databases such as VSD [the Vaccine Safety Datalink].” Incredibly, CDC then spent taxpayer dollars to have scientists, such as Dr. Stanley Plotkin, write a white paper in 2015 on how to conduct this simple study.  

In 2020, our legal team submitted a FOIA request to CDC for a copy of any study done per the 2015 white paper. The CDC’s incredible response was that it did not have any such study to produce:

A search of our records failed to reveal any documents pertaining to your request. The CDC has not conducted a study of health outcomes in vaccinated vs unvaccinated populations.

In 2022, we asked again. This time CDC responded by saying that not only did it not have any such study to produce, but that it would never conduct such a study because it would be unethical (even though CDC’s own white paper explained how it could be done by simply analyzing existing databases!):

CDC has not conducted a comparison of health outcomes in vaccinated vs unvaccinated populations; therefore, CDC does not have documents responsive to this FOIA request. CDC and the National Vaccine Advisory Committee (NVAC), an HHS advisory committee, have concluded it would not be ethical to deny or withhold vaccinations from a study population and Institutional Review Boards (IRB) would not approve this kind of a study.

Reflecting the importance of conducting a comparison of vaccinated and unvaccinated children, here is the response from CDC in 2023 to our request for all VAERS reports for any adverse events that were determined to be caused by any COVID-19 vaccine: “reports to VAERS are useful for generating hypotheses, but studies with vaccinated and unvaccinated subjects are necessary to confirm any hypotheses…”

So, we again asked in May 2024 for copies of studies comparing health outcomes of vaccinated and unvaccinated children. Yet again, CDC provided nothing of substance, other than stating:

CDC is unaware of vaccine safety studies comparing health outcomes of individuals who have received any licensed vaccine(s), against health outcomes of individuals who have not received any vaccines.

So, to summarize: despite the fact that studies comparing vaccinated to unvaccinated outcomes are necessary to establish adverse event causation (which CDC admits), and despite the fact that the CDC has a white paper that explains how this type of study could be done ethically by using existing databases, CDC steadfastly refuses to produce a single one.

This all begs the question: Has CDC done the studies but not disclosed its findings? Or has it truly never conducted such studies? In either case, it is not good because CDC is either hiding potentially damning findings or it is guilty of gross incompetence in not doing the needed studies. Our bet is that they have been done and not disclosed—because why not do the studies and prove us wrong already?!

With your support, ICAN will continue to fight to force the CDC to disclose any such studies it has done and attempted to bury!