A study by Li et al. out of Sun Yat-Sen University has raised concerns, once again, over the vaccines and autism possible connections. The study was unique in the way that it tested the immune activation by vaccines on brain development in rats. The results seem to show that vaccines containing the aluminum adjuvant elevated cytokine levels in the hippocampus region of the brain. This is the region of the brain noted as being responsible for Autism.
According to Collective Evolution
Li et al. were the first to test the effects of immune activation by vaccination on brain development. All other studies of immune activation before this had used pathological conditions to mimic infection and induce fever, and therefore concerns about the transferability of the data had been in question until this study came out.
J.B. Handley sums up the results:
“There were three different groups of rats:
- Rats receiving the BCG vaccine (not given in the U.S.)
- Rats receiving the Hepatitis B vaccine (given on day 1 of life in the U.S.)
- A control group with no vaccine.
The BCG vaccine does NOT contain aluminum adjuvant and the impact on the rat’s brains from BCG was actually positive!
The Hep B vaccine rats, however, showed the kind of immune activation event we are seeing in autism (high IL-6). This is biological proof of the link between a vaccine — given to a post-natal animal — inducing an immune activation event, including the cytokine marker for autism, IL-6. A scientific first.”