The "largest" study of its kind has confirmed piles and piles of evidence that there is no link between the mumps, measles, and rubella vaccine (MMR) and autism, as feared by the anti-vaxxer community.

The Danish study, published in the Annals of Internal Medicine journal, examined data gathered from 1990 to 2010 on 657,461 children, including 6,517 kids who were diagnosed with autism.

"One of the strengths of the study was that it was the largest single study to date in the world on this topic," said Dr. Kristine Macartney, who is the Director of the Australian Centre for Immunisation Research and Surveillance and a Professor in Paediatrics and Child Health at the University of Sydney.  "The most important thing to say from this study, and from the almost dozen other studies, is that it's not vaccines."

A notorious and completely debunked 1998 paper attempted to make the link based on a study of just 12 children.  The "doctor" who wrote it was found to have faked has research, and had his license to practice medicine pulled.  Nonetheless, the bogus information has continued to spread, partially because of the endorsement of ill-informed celebrities, partially because of the Internet's ability to amplify conspiracy theories.

But the Danish study doesn't just prove the MMR vaccine has no association with autism.  It showed the vaccine isn't associated with an increased risk of autism even among kids who are at high risk because they have an autistic sibling.  And the children who were vaccinated were 7 percent less likely to develop autism than children who didn't get vaccinated.