There is a higher incidence of autism among boys than girls.

Since the new vaccine was approved, the incidence of the disease has decreased significantly.

In the 1970’s the incidence of autism was 2-3 per 10,000. Today, according to the Center for Disease Control (CDC), the estimated prevalence of autism spectrum disorder in the U.S. is 1 in 88 children.

The different forms of autism are thought to overlap considerably. But the fact that there is wide variation in symptoms among children with autism led to the concept of autism spectrum disorder. Autism seems to be on the rise, and autism spectrum disorders affect between two and six children out of every 1,000 in the U.S. It's unclear, though, whether the growing incidence of autism represents a real increase or just improved detection

Most definitively NO. The MMR vaccine (and, all other vaccines) have absolutely NOTHING TO DO WITH AUTISM. There have been repeated clinical studies, and absolutely no tie between the MMR vaccine and any incidence of autism has been discovered.

The scare was caused by bad science and desperate parents, looking for something to blame, and a news media looking for the latest sensational cause. There never was any credible reason to assume there was a tie between MMR and autism, let alone scientific evidence.