So where does the widespread belief that vaccines do not cause autism derive? In a nutshell: from an over-whelming quantity of ‘manufactured science’ of low quality, scientific fraud, and ignoring evidence supporting causality. Few doctors and politicians are aware of the pivotal scientific fraud committed in the US Centers for Disease Control. A study of the MMR vaccine in black American babies showed a 2.5 fold higher level of autism in babies given the MMR vaccine at 12 months of age compared to 3 years. The CDC refused to publish these findings but manipulated the data to disguise the undeniable association found. The fraudulent data was then published (DeStefano F 2004 ) and promoted as the final statement on the question. Thereafter the official line was that vaccination did not cause autism.
— John Piesse, MD