Since the root cause of autism is in the genes, it is extremely unlikely that the blood test would show anything different in a vaccinated vs. an unvaccinated child.
Furthermore, there is no conceivable mechanism by which a vaccine--which stimulates the immune system in much the same fashion that a pathogen does, but in a much safer, controlled manner--would act on the brain. The impossibility becomes even more pronounced when one takes into account that the brain features which cause the manifestation of autism are present long before birth. Vaccines do not travel through time.
Then no doubter should fear or impede blood testing of before and after
Lets have it out there and prove you’re right
Speaking of time travel ... my uncle and his grandsons were probably somewhere on the spectrum. My grandmother said she had relatives in “the old country” with similar traits.
She was born in 1901 so her older relatives were in the UK in the 1800s. No vaccines.