Do Vaccinations and Autism have a link?  Its a very touch subject and there has been extensive scientific research on the subject.  Many parents believe that there children started showing Autistic Symptoms first after the child received a vaccination containing a mercury like preservative called Thimerosal.  Mainstream science on the other hand has discounted Thimerosal as the cause of Autism.

A study in Denmark after the removal Thimerosal in 1992 research was conducted on the rates of Autism after the removal from Thimerosal, in it it was stated “The incidence [number of new cases over a time period] of autism remained fairly stable until 1990 and thereafter increased throughout the study period, including the period when thimerosal was no longer in vaccines.“  (Source).  This is just one of many astudies that disprove that Thimerosal is the cause of Autism.