The authors reported a cluster of 9 children seen at Colorado Children's Hospital with an acute neurologic illness characterized by extremity weakness, cranial nerve dysfunction, diplopia (double vision), facial droop, dysphagia (swallowing difficulties) dysarthria (weak or slurred speech) or both. Median age was 8 years. All had a preceding febrile illness with cold-like symptoms. Four had enterovrus (EV) D68 isolated from the nasopharynx. Polio virus was excluded. (Order of authorship in the original publication: Pastula, Aliabadi...Miller.) Digital facsimile from PubMedCentral at this link.

Related to this case cluster:

Patrick Ayscue, Keith Van Haren,....C. Glaser, "Acute flaccid paralysis with anterior myelitis- California, June 2012," MMWR, 63, 903-906. These authors reported on a case of classic Acute Flaccid Myelitis dating to August 2012 in the San Francisco Bay Area. The patient was 29 years old. Polio virus was excluded. They noted that a total of 23 cases of Acute Flaccid Paralysis with myelitis were identified between December 2012 and February 2014. For this cluster the mean age was 10 years, and only 2 of those patients had EV D68. Once again polio was excluded. At this time the diagnosis of these cases was "Acute flaccid paralysis with anterior myelitis." Digital facsimile from PubMedCentral at this link.

(Thanks to Juan Weiss for these references and their interpretation.)