With a new report, the Centers for Disease Control and Prevention is tacitly embracing a recently coined autism classification and providing a first-of-its-kind breakdown on the number of kids on the severe versus milder ends of the spectrum.

Researchers from the federal health agency published a study this month in the journal Public Health Reports indicating that 26.7% of children with autism have what’s known as “profound autism,” meaning that they are nonverbal, minimally verbal or have an intelligence quotient of less than 50.

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