title: Paralytic poliomyelitis (1989-1994): report from a sentinel center.
abstract: OBJECTIVE
  To study the trends of paralytic poliomyelitis in pre Pulse Polio Immunization period.
  
  
  METHODS
  Hospital based sentinel surveillance.
  
  
  METHODS
  Analysis of 6704 line-listed poliomyelitis cases from January 1989 to December 1994 attending the Department of Physical Medicine and Rehabilitation.
  
  
  RESULTS
  85% of all cases reported in Delhi were from this center. A decline in alternate year peaks was observed from 1621 cases in 1990 to 1062 cases in 1994. There was an increase in proportion of cases with poliomyelitis in fully vaccinated children from 14% to 22.9%. Polio type I virus was the commonest isolated virus in all the years except 1993, when type II was isolated in 38.7% of cases.
  
  
  CONCLUSIONS
  Despite improvement in immunization coverage, the study reveals that a large number of children (67.2%) who suffer from poliomyelitis are unvaccinated. This stresses need to intensify and sustain high level of immunization coverage with effective vaccine.
authors.affiliation: Department of Physical Medicine and Rehabilitation, Kalawati Saran Children's Hospital, New Delhi.
authors.forename: B
authors.initials: B
authors.lastname: Ahuja
authors.forename: V K
authors.initials: VK
authors.lastname: Gupta
authors.forename: A
authors.initials: A
authors.lastname: Tyagi
mesh_terms: D002675:Child, Preschool; D005260:Female; D006801:Humans; D007194:India; D007223:Infant; D008297:Male; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control; D011159:Population Surveillance; D015995:Prevalence; D014611:Vaccination