One thing the vaccine establishment are keen on defending, to the death, metaphorically if necessary, as the hill to die upon, is that vaccines do not cause autism. The big vax/autism controversy involved Dr Andrew Wakefield who published a paper alleging a link between various vaccines and autism. That ignited a controversy, where Wakefield became a medical heretic, with all the fringe disadvantages, such as persecution and cancellation, as only the medical technocracy can. He responded to the war waged upon on him in his book, Callous Disregard (2011), which answers his critics.
Now, Covid vax critic Steve Kirsch is turning his attention to the broader question of the safety of vaccines other than the Covid mRNA ones. He asks the simple question, that if vaccines did not trigger autism, then “the number of times a parent notices autistic behaviour BEFORE a wellness visit where a vaccine is given should be comparable to the number of times AFTER the visit.” Surprisingly enough, there have been no scientific studies addressing this question, but Kirsch has conducted a survey where it was found that in a sample of 273 responses to the target question, 58 parents reported first seeing autistic behaviours within a month AFTER a vaccine appointment, and zero parents reported first seeing autistic behaviours within a month BEFORE a vaccine appointment.