title: Epidemic malaise.
mesh_terms: D004576:Electromyography; D004679:Encephalomyelitis / Q000209:etiology*; D006801:Humans; D010523:Peripheral Nervous System Diseases / Q000209:etiology; D014459:Ulnar Nerve / Q000503:physiopathology; D014780:Viruses / Q000302:isolation & purification