US National Library of Medicine Has 11 Studies Linking Vaccines to Autism

Written by John O'Sullivan CEO Principia Scientific Interntational on July 23, 2026. Posted in Current News

For instance, a 2011 study published in the Journal of Toxicology and Environmental Health found a positive association between childhood vaccination uptake and autism prevalence across the U.S. population .

While correlation is not causation, the authors noted this association was significant enough to warrant further study—a call that has largely been ignored.

The Question of Aluminum

One of the most compelling, yet understudied, avenues of inquiry involves aluminum adjuvants. These are compounds added to vaccines to provoke a stronger immune response. Vaccines containing aluminum are given to infants as young as a few months old.

The CDC’s own recent website update, which sparked global controversy, admitted that the scientific foundation to rule out a link has not been established . The CDC page pointed to research suggesting a statistical correlation between aluminum exposure from vaccines and an increased risk of persistent asthma, and even noted a 67% increased risk of Asperger’s syndrome associated with aluminum exposure in one dataset .

A Crisis of Integrity

In November 2025, the CDC took the unprecedented step of altering its official stance. The agency’s website now reads: “The claim ‘vaccines do not cause autism’ is not an evidence based claim.”

It further stated that

“Scientific studies have not ruled out the possibility that infant vaccines contribute to the development of autism” .

This revision was met with outrage from the medical establishment. The American Academy of Pediatrics and the World Health Organization quickly reaffirmed their positions . But why the panic?

If the science is truly settled, why is a government agency altering its website to acknowledge the lack of definitive proof?

One has to wonder if the establishment is more concerned about vaccine hesitancy than scientific truth.

Thanks to Andrew Zywiec, M.D. @AndrewZywiecMD who today posted on x.com the following officially listed scientific studies that clearly show vaccines cause Autism:  http://ncbi.nlm.nih.gov/pubmed/21623535 ▪️ http://ncbi.nlm.nih.gov/pubmed/25377033 ▪️ http://ncbi.nlm.nih.gov/pubmed/24995277 ▪️ http://ncbi.nlm.nih.gov/pubmed/12145534 ▪️ http://ncbi.nlm.nih.gov/pubmed/21058170 ▪️ http://ncbi.nlm.nih.gov/pubmed/22099159 ▪️ http://ncbi.nlm.nih.gov/pubmed/17454560 ▪️ http://ncbi.nlm.nih.gov/pubmed/19106436 ▪️ http://ncbi.nlm.nih.gov/pubmed/21299355 ▪️ http://ncbi.nlm.nih.gov/pubmed/21907498 ▪️ http://ncbi.nlm.nih.gov/pubmed/11339848 ▪️ http://ncbi.nlm.nih.gov/pubmed/17674242 ▪️ http://ncbi.nlm.nih.gov/pubmed/21993250 ▪️ http://ncbi.nlm.nih.gov/pubmed/15780490 ▪️ http://ncbi.nlm.nih.gov/pubmed/12933322 ▪️ http://ncbi.nlm.nih.gov/pubmed/16870260 ▪️ http://ncbi.nlm.nih.gov/pubmed/19043938 ▪️ http://ncbi.nlm.nih.gov/pubmed/12142947 ▪️ http://ncbi.nlm.nih.gov/pubmed/24675092

Beyond the Studies: Vaccine Inserts

It is often said that vaccine manufacturers list autism in their package inserts. Critics argue this is simply a list of “adverse events”—anything that happened to someone after they received a vaccine, regardless of causation .

However, one might argue that if the pharmaceutical industry is willing to list it in their paperwork to protect themselves from liability, perhaps we should be paying attention, rather than dismissing it as a coincidence.

Dr. Pierre Kory, MD: “It is a myth that vaccines are safe and necessary.”

“If I had young children today, they would not receive a single vaccine.” Dr. Kory explains that Sudden Infant Death Syndrome (SIDS) peaks at 2, 4, and 6 months of age — exactly when infants receive multiple routine vaccinations.

He states that the government refuses to perform true placebo-controlled safety trials on vaccines. Unlike other pharmaceuticals, which undergo 2–6 years of rigorous safety testing before FDA/CDC approval, vaccines have never been subjected to the same long-term, robust safety standards.

In clinical trials, safety monitoring for adverse reactions was extremely short:
Hepatitis B vaccine: Tested on only 147 infants/children and monitored for just 5 days before approval.

Hepatitis A vaccine: Monitored for 14 days.
Meningococcal (meningitis) vaccine: Monitored for 7 days.
Prevnar (pneumococcal) vaccine: Monitored for 7 days.
MMR vaccine: Followed for 42 days.
RSV vaccine: Monitored for 30 days.
DTaP / Tdap vaccines: Monitored for 14 days.
Gardasil (HPV) vaccine: Monitored for 14 days.

Crucially, no childhood vaccine has ever been tested against a true inert saline placebo. Trial “placebos” have instead used aluminum adjuvants or other vaccines:

Gardasil trial → placebo was Hepatitis A vaccine + aluminum adjuvant
Hepatitis A trial → placebo was Hepatitis B vaccine
Influenza trial → placebo was the other flu strain vaccine
Meningitis trial → placebo was DTaP
Pertussis trial → placebo was Tetanus + Diphtheria
Polio trial → placebo was diluted polio vaccine
Vaxelis (6-in-1) trial → placebo was DTaP + Polio + Hib + Hep B
Hepatitis B trial → placebo was aluminum adjuvant alone

Dr. Kory notes that countries with the most vaccines on their infant schedules have the highest infant mortality rates.

The United States gives more infant vaccines than any other industrialized nation — and has the highest infant mortality rate among them.

He further states that 97% of SIDS deaths occur within 7 days of vaccination.

A Call for Real Science

The scientific community has spent billions of dollars to persuade us vaccines prevent disease. That is their triumph because most of us were successfully fooled. But the push to protect the vaccine program has often came at the expense of legitimate safety research.

The WHO’s recent review that reaffirmed the “no link” conclusion also noted that eleven studies suggesting a potential association had “multiple and significant methodological issues” and were given little weight .

One might argue that studies that contradict the mainstream narrative are judged far more harshly than those that support it.

When the CDC itself admits that no high-quality studies have ruled out the possibility that the 20 doses of seven different vaccines given to children before their first birthday could contribute to autism, it is time to stop the rhetoric and start the real science .

We owe it to our children to investigate all potential causes of autism without prejudice.

References

1. Taylor, L., et al. “CDC website altered to suggest possible link between vaccines and autism.” The BMJ, 2025. 

2. “Vaccines and autism.” PubMed Search Results. National Institutes of Health. 

3. “Correcting this week’s misinformation: week of April 16, 2026.” Voices For Vaccines. 

4. “Statement of the WHO Global Advisory Committee on Vaccine Safety (GACVS) on vaccines and autism.” World Health Organization, 2025. 

5. “Autism and Vaccines.” Centers for Disease Control and Prevention, 2025. 

6. “WHO expert group’s new analysis reaffirms there is no link between vaccines and autism.” World Health Organization, 2025. 

About the author: John O’Sullivan is CEO and co-founder (with Dr Tim Ball among 45 scientists) of Principia Scientific International (PSI).  He is a seasoned science writer, retired teacher and legal analyst who assisted skeptic climatologist Dr Ball in defeating UN climate expert, Michael ‘hockey stick’ Mann in the multi-million-dollar ‘science trial of the century‘. From 2010 O’Sullivan led the original ‘Slayers’ group of scientists who compiled the book ‘Slaying the Sky Dragon: Death of the Greenhouse Gas Theory’ debunking alarmist lies about carbon dioxide plus their follow-up climate book. His most recent publication, ‘Slaying the Virus and Vaccine Dragon’ broadens PSI’s critiques of mainstream medical group think and junk science.