Evidence of spinal cord involvement in Powassan virus infection is largely limited to mouse models. We report a case of a polio-like illness caused by Powassan virus infection in a 62-year-old man in Canada. Magnetic resonance imaging showed T2 hyperintensities in the anterior horns of the cervical spinal cord.
Keywords: Canada; Powassan virus; anterior horn cells; arboviruses; encephalitis viruses; magnetic resonance imaging; meningitis/encephalitis; poliomyelitis; tick-borne; vector-borne infections; viruses.