. welcome back. there is a growing health concern tonight about a rare polio-like illness affecting children across the country. the cdc has confirmed 38 cases in 16 states, and that doesn t include more than a dozen cases announced in colorado as well as several other unconfirmed cases in illinois, minnesota, and washington state. the medical name is acute flaccid myelitis, or afm. dr. sanjay gupta has one survivor s story. where do you hurt, honey? this video is hard to watch. i can t tell you. reporter: this is lydia pillarowski, four years ago. play close attention to her left arm. she s really not moving it. she is in the throes of acute