title: An outbreak of aseptic meningitis in the area of Fort Smith, Arkansas, 1975, due to echovirus type 4.
mesh_terms: D000293:Adolescent; D000328:Adult; D001131:Arkansas; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000453:epidemiology*; D029822:Enterovirus B, Human; D004769:Enterovirus Infections / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008587:Meningitis, Viral / Q000134:cerebrospinal fluid / Q000453:epidemiology* / Q000635:transmission; D008875:Middle Aged