A new Swedish study finds that the number of children with autism in Somali communities is on the rise, but it’s not clear whether the cause is biological or social.

Cases of autism in some high-risk areas are leveling off, argues a new study published in November in Pediatrics.

The first study of autism in Oman reveals that only 114 children have been diagnosed with the disorder.

Changes in diagnostic practices, more active neighborhood networks, and an increase in the number of older parents may all contribute to the massive rates of autism in California, says a group of social scientists. But the numbers still don’t add up.

A new study upends the controversial notion that autism clusters among Somali immigrants are a result of vitamin D deficiency.

Here’s a remarkable statistic you may not have heard: white children are two to three times more likely to be diagnosed with autism than are their Hispanic peers.

The news yesterday was hard to miss: 1 in every 100 children apparently has autism, according to two new studies.