A new report is out from the Institute of Medicine, a branch of the National Academy of Sciences, on vaccine safety. In the voluminous report, the committee of course does not find that every vaccine is perfectly safe for all time--there are certainly some risks. But it once again rejects the claim that the MMR (measles, mumps, rubella) vaccine causes autism--the evidence, the committee said, was more than adequate to reject this causal assertion. You can read the report for free here. The New York Times report, titled "Vaccine Cleared Again as Autism Culprit," is here. Please note: Anti-vaxxers will not change their minds based on this major scientific consensus report. They will argue back and challenge its conclusions. So it goes.