http://articles.mercola.com/sites/articles/archive/2005/03/23/autism-rate-part-two.aspxThe apparent rise in the proportion of children in the United States with autism appears to be real. Ranging from one in 500 to one in 1,000 cases in the United States each year, autism prevalence is increasing with successively younger children, particularlyenCommunityServer 2008.5 SP1 (Build: 31106.3070)