More children in the United States have an autism spectrum disorder (ASD) than previously thought, the US Centers for Disease Control and Prevention (CDC) reports today. New estimates put the figure at 1 in 68 children aged 8 years (or 14.7 per 1000) ― roughly 30% higher than previous estimates reported in 2012 of 1 in 88 children (11.3 per 1000) having an ASD.