title: Transmission of measles across state lines--Kentucky, New Hampshire, Tennessee, Virginia.
mesh_terms: D000293:Adolescent; D000328:Adult; D002675:Child, Preschool; D004544:El Salvador / Q000208:ethnology; D006801:Humans; D008297:Male; D008457:Measles / Q000635:transmission*; D014195:Travel; D014481:United States