"Deadly Immunity" is an article written by Robert F. Kennedy, Jr. that appeared in the July 14, 2005 issue of Rolling Stone and, simultaneously, on the website Salon. The article is focused on the 2000 Simpsonwood CDC conference and claims that thimerosal-containing vaccines caused autism, as well as the conspiracy theory that government health agencies have "colluded with Big Pharma to hide the risks of thimerosal from the public." The article had originally been fact-checked and published in print by Rolling Stone, but posted online by Salon. The article was retracted by Salon on January 16, 2011, in response to criticisms of the article as inaccurate.