title: A case control study to assess the efficacy of measles vaccine.
abstract: OBJECTIVE
  To measure the efficacy of measles vaccination in a given geographical area.
  
  
  METHODS
  Population based case control study.
  
  
  METHODS
  Medical Officer of Health area, Kotte.
  
  
  METHODS
  All children born after January 1985 and registered by the midwives of the area.
  
  
  RESULTS
  Vaccine efficacy was 88.9%, the 95% confidence limits being 65.21% to 96.5%.
  
  
  CONCLUSIONS
  The method described is a suitable alternative to the more expensive serological estimates of vaccine efficacy.
authors.affiliation: Department of Community Medicine, Faculty of Medicine, University of Colombo.
authors.forename: L
authors.initials: L
authors.lastname: Rajapaksa
mesh_terms: D016022:Case-Control Studies; D002675:Child, Preschool; D016001:Confidence Intervals; D006801:Humans; D007223:Infant; D008457:Measles / Q000453:epidemiology / Q000517:prevention & control*; D008458:Measles Vaccine; D013188:Sri Lanka / Q000453:epidemiology; D014611:Vaccination
chemical_list: D008458:Measles Vaccine