Autism has a bunch of factors and was well-established before vaccines even existed. The fact that autism is now epidemic, only a few generations after we started rewriting ourselves with retrovirus, speaks volumes. The genetic factors, other environmental factors, as well as unknown factors all cause people to fall into the spectrum. The action of vaccines not being studied or even outright dismissed is the problem I see here. I have multiple autistic children, all by the same mother. The ones who had less vaccines are the less functional ones, but I really have seen a correlation. It is probably good that medical doctors do not agree, not only in this instance but on cancer, vbac, and really everything they do not agree on.