title: Outbreak of poliomyelitis in Finland in 1984. Description of nine cases with persisting paralysis.
abstract: Finland has been free of poliomyelitis since 1964 following a high coverage regular immunization programme using the Salk-type trivalent inactivated poliovirus vaccine. In late 1984 an outbreak of poliomyelitis with widespread circulation of poliovirus type 3 throughout the country was found. A thorough surveillance revealed 9 sporadic cases with acute persisting paralysis, all shown to be caused by poliovirus type 3. The preceding 20-year period free from poliomyelitis contributed to some diagnostic problems.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000453:epidemiology*; D004812:Epidemiologic Methods; D005243:Feces / Q000382:microbiology; D005260:Female; D005387:Finland; D006801:Humans; D008297:Male; D008875:Middle Aged; D011051:Poliomyelitis / Q000175:diagnosis / Q000453:epidemiology*; D017955:Poliovirus / Q000302:isolation & purification; D011054:Poliovirus Vaccine, Inactivated / Q000008:administration & dosage
chemical_list: D011054:Poliovirus Vaccine, Inactivated