[An investigation of sequelae of paralytic poliomyelitis in some districts of inner Mongolia autonomous region].
Three hundreds and twelve sequelae of paralytic poliomyelitis were diagnosed among 163,013 lame children under 12 years of age. The prevalence of paralytic poliomyelitis was 1.91%. The result showed that although the morbidity of poliomyelitis has greatly decreased since the programme on immunization against polio were introduced, there were still a number of unreported cases. Of the cases diagnosed, ninety-three per cent were those who were unvaccinated and were mostly infected in the first four years of life.
Zhang
L
L
Inner Mongolia Hygiene and Epidemic Prevention Station.
D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D016262:Postpoliomyelitis Syndrome / Q000453:epidemiology*; D015995:Prevalence