We are told repeatedly that study after study has shown vaccinations to be safe and not to be linked to autism. Just reading the vaccine inserts, you will discover that vaccines are not 100% safe – a fact that is reiterated by discussions with pediatricians. However most pediatricians would still recommend vaccinating as they feel the benefits outweigh the risks. 
Regarding all the research that has been done not linking vaccines to autism, there are actually studies that do link vaccines to autism. These studies were not funded by the pharmaceutical industry and are often dissected by those who whole-heartedly support vaccines even though the pharmaceutical studies are taken at face value.
Hepatitis B Vaccine and Autism
Prior to 1999, the Hepatitis B vaccine contained thimerosal (49.6% mercury by weight). A study was performed in 2010 to determine if vaccines containing thimerosal given prior to 1999 were linked to autism. The Journal of Toxicology and Environmental Health found that there was in fact a link….
