Hi, I would like to emphasize the question mark in my thread title, because I am jumping to conclusions here based on a lot of info that I haven't researched well. This is a question, not a research finding. With that disclaimer said-- I did react poorly to the diptheria/tetanus/polio vaccine as a child (leg went stiff & I cried a lot, needed half doses of vaccinations going forward and never had this reaction again) and I wound up susceptible to Lyme disease. I know both Lyme and Autism have unusual methylation issues, but I haven't researched much about Autism because I don't fit that profile. But I know there are many that feel vaccination can cause Autism, so I was wondering if there could be a connection also to Lyme susceptibility.