I do believe we should be doing more research into the history of those diagnosed on the spectrum to look for possible causes. I do not believe it is vaccines (yet) but they are certainly one of the few consistent shared exposures in society so it should be looked at.
And the next obvious question in the debate should be, does it matter? For the sake of argument let’s say that 1 in 68 children do end up on the spectrum because of vaccines, what then? Is that an acceptable collateral damage considering the diseases that are prevented?