More than 90% of the 440 patients with AFM since 2014 have been children younger than age 4. Most of the children with confirmed cases experienced a viral illness with symptoms including fever and cough about three to 10 days before the onset of paralysis, the CDC said this month.
The patients with confirmed AFM are in 31 states, which the CDC has now identified for the first time. There are 15 cases in Colorado, the state with the highest number, followed by Texas with 14 confirmed cases. Nineteen states have no confirmed cases, and 12 states are reporting only one confirmed case, according to the CDC.