Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
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It's a monster under the bed that keeps a lot of new parents up at night, but it seems the more light that is shed on autism, the more troubling the data becomes. A new government report out today says that 2 percent of American schoolchildren, or one million kids, have been diagnosed with some aspect of autism.
But do more kids really have it, or are we just quicker to diagnose it?
"Numbers have varied, but the fact remains the same - autism is extremely common" says professor Zachary Warren.
For more of our interview, click on the video above.