Time (Oct. 05, 2009) -- One in a hundred American children has an autism spectrum disorder (ASD). That stunning new statistic was released on Monday by the Federal Government, officially revising the 2007 federal estimate of 1 in 150 children. The new number puts U.S. prevalence on par with reported rates in England, Japan, Sweden and Canada. It is based on two separate and very different government-funded research studies: a telephone survey of 78,037 parents by the Health Resources and Services Administration (HRSA), and a rigorous national surveillance study conducted by the Centers for Disease Control and Prevention (CDC). In an unusual show of attention and concern, top officials from the Department of Health and Human Services, the National Institutes of Health and the CDC held a press conference on Oct. 2 in which they attempted to explain the new numbers, allay concerns and assure the public that substantial government resources are being devoted to understanding autism.
"We are extremely concerned about the apparent increase in estimated prevalence of autism spectrum disorders," said Ileana Arias of the CDC. "However, we urge extreme caution in interpreting this change. An increase in diagnosis does not necessarily mean that more children actually have ASD. Unfortunately, the information that we currently have doesn't allow us to give a true account of whether the apparent increase is an actual increase or the result of changes in the way we describe and diagnose ASDs."
By Claudia Wallis
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