Nation Mysterious polio-like disease targeting kids may be caused by ‘missing’ virus, study says October 22, 2019Adrianna Rodriguez, USA TODAYComments Off on Mysterious polio-like disease targeting kids may be caused by ‘missing’ virus, study says The CDC has confirmed 20 cases of acute flaccid myelitis, or AFM, in the U.S. in 2019. The rare illness can paralyze a child's arms and legs.