title: [Survey on contact tracing of newly reported HIV infections in 2009 in Dehong prefecture, Yunnan province].
abstract: OBJECTIVE
  To explore a new method for finding more HIV/AIDS.
  
  
  METHODS
  In September 2009, newly reported HIV-infected individuals from May to August, 2009 in Dehong prefecture were asked to participate in a survey which requested demographic characteristics, history of high-risk behaviors and contact information of individuals with whom they had high risky contacts. People with risky contacts with HIV-infected cases (index cases) were also approached to participate in this survey and HIV testing was provided.
  
  
  RESULTS
  A total of 342 HIV-infected individuals were newly reported and served as index cases from May to August, 2009. Among them, 47.1% (161/342) were transmitted by regular sexual partners. Through three-round surveys, 218 contacts were traced and among them, 84.9% (185/218) were traced by regular heterosexual partners. HIV positive rate of the tested was 34.7% (60/173) in the first-round tracing and 12.5% (1/8) in the second one. Among the 560 individuals (index cases and their high-risk contacts), the proportions of having regular heterosexual partners, non-regular and non-commercial sexual partners, commercial sexual heterosexual partners and men having sex men were 87.9% (492/560), 18.9% (106/560), 22.3% (125/560) and 0.3% (1/318), respectively, while the proportion of having never used condoms when having sex with the above four types sexual partners were 73.8% (363/492), 72.6% (77/106), 63.2% (79/125) and 0.0% (0/1), respectively.
  
  
  CONCLUSIONS
  As an epidemiological method for HIV/AIDS finding, contact tracing identified a large number of HIV infectors who were traced by newly reported HIV-infected individuals.
authors.affiliation: National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
authors.forename: Duo
authors.initials: D
authors.lastname: Shan
authors.forename: Song
authors.initials: S
authors.lastname: Duan
authors.forename: Yan
authors.initials: Y
authors.lastname: Cui
authors.forename: Run-hua
authors.initials: RH
authors.lastname: Ye
authors.forename: Li-fen
authors.initials: LF
authors.lastname: Xiang
authors.forename: Yue-cheng
authors.initials: YC
authors.lastname: Yang
authors.forename: Ji-bao
authors.initials: JB
authors.lastname: Wang
authors.forename: Yong-cheng
authors.initials: YC
authors.lastname: Pu
authors.forename: Wen-xiang
authors.initials: WX
authors.lastname: Han
authors.forename: Rong
authors.initials: R
authors.lastname: Wang
authors.forename: Da
authors.initials: D
authors.lastname: Ren
authors.forename: Zhong-ju
authors.initials: ZJ
authors.lastname: Yang
authors.forename: Cheng-bo
authors.initials: CB
authors.lastname: Wang
authors.forename: Wei-mei
authors.initials: WM
authors.lastname: Li
authors.forename: Ying
authors.initials: Y
authors.lastname: Liu
authors.forename: Jiang-ping
authors.initials: JP
authors.lastname: Sun
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology; D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D016358:Contact Tracing / Q000379:methods*; D005260:Female; D015658:HIV Infections / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012307:Risk Factors; D011795:Surveys and Questionnaires; D055815:Young Adult