title: Analysis on value of household contact survey in case detection of leprosy at a low endemic situation in China.
abstract: BACKGROUND
  Leprosy is at a low endemic situation in China, the value of house contact survey in case detection of leprosy becoming a dispute.
  
  
  OBJECTIVE
  To evaluate the value of household contact survey in the case detection of leprosy at a low endemic situation in China.
  
  
  METHODS
  A study was carried out using a designed questionnaire in a retrospective method to analyze the value of household contact survey in case detection in Southwest and East China.
  
  
  RESULTS
  A total of 2135 index leprosy patients were collected from January 1, 1996 to December 31, 2005 in six provinces of China. The number of index patients accounted for 22.0 and 14.1% of newly registered patients in the Southwest and East of China, respectively. The household contact survey (36.1%) and the skin clinic (62.0%) ranked first in methods of case detection in Southwest and East China, respectively. Within 5 years after primary leprosy patients were detected, 24.8 and 16.1% of the index patients in Southwest China and East China had been detected, respectively.
  
  
  CONCLUSIONS
  The authors conclude that at the time of a low leprosy endemic situation, the household contact survey is still a useful method for case detection in China.
authors.affiliation: Department of Leprosy Control, Institute of Dermatology, Chinese Academy of Medical Sciences, Nanjing, PR China, 210042. jianping_shen2@yahoo.com.cn
authors.forename: Jianping
authors.initials: J
authors.lastname: Shen
authors.forename: Yaofei
authors.initials: Y
authors.lastname: Wang
authors.forename: Min
authors.initials: M
authors.lastname: Zhou
authors.forename: Wenzhong
authors.initials: W
authors.lastname: Li
mesh_terms: D000328:Adult; D002681:China / Q000453:epidemiology; D019353:Endemic Diseases; D005191:Family Characteristics; D005260:Female; D006306:Health Surveys; D006801:Humans; D007918:Leprosy / Q000175:diagnosis* / Q000453:epidemiology*; D008297:Male; D012189:Retrospective Studies