re:  "Correlation is not causation."

But there's so much more to it than that.  

There are thousands of accounts of vaccine reactions followed by regression into autism.  These accounts are consistent with the listing of "encephalitis" (inflammation of the brain) and "encephalopathy" (disease/injury of the brain) on the govt's own HRSA vaccine injury table.

A growing body of published science shows that immune system issues are a major factor in autism, including inflammation of the brain, auto-antibodies to nerve cells, inflammatory cytokines in spinal fluid, inflammatory bowel disease, food allergies, and more.

The vaccine court has compensated many cases of autism - as long as "autism" is not the label used.
Unanswered Questions from the Vaccine Injury Compensation Program: A Review of Compensated Cases of Vaccine-Induced Brain Injury
http://digitalcommons.pace.edu/pelr/vol28/iss2/6/