Testing single vaccine ingredients to refute vaccinations as a major autism contributor is inconclusive, especially given the poor nature of the studies. Vaccines are not single agents.
Imagine consuming several different type of cocktails at once. Each cocktail contains multiple infectious agents, microbes, and metals acting together and creating new and unexamined synergies in interaction with each individual. Our research model doesn't assess those synergies or predict which individuals are vulnerable.
So when science repeatedly proffers findings that "No, it isn't this single agent," rather than proving that vaccinations don't precipitate autism, what's demonstrated are the limitations of the modern reductive research approach.
Falling outside this research model, the many real factors and variables are treated as non-existent because the study design cannot account for them. As a result, every single autistic child serves as a living human reminder that we need to account for individual differences, multiplier factors, and human complexity--and adjust our scientific model and attendant belief systems accordingly.
