title: Sexual transmissibility of HIV among opiate users with concurrent sexual partnerships: an egocentric network study in Yunnan, China.
abstract: OBJECTIVE
  To investigate the patterns of concurrent sexual partnerships among young opiate users and sexual transmissibility of human immunodeficiency virus (HIV) in concurrent sexual partnerships in drug-use and sexual networks.
  
  
  METHODS
  Cross-sectional design.
  
  
  METHODS
  A total of 426 young opiate users in Yunnan, China.
  
  
  METHODS
  Young opiate users recruited from their network ties.
  
  
  METHODS
  Respondent-driven sampling (RDS) was used to recruit participants. Multiple logistic regressions were performed to analyze the relationships of concurrent sexual partnerships with egocentric social network components, risky sexual behavior for HIV and drug-use practices.
  
  
  RESULTS
  The RDS-adjusted prevalence of concurrent sexual partners was 42.9% among opiate users. Opiate users with concurrent sexual partnerships were more likely to engage in risky HIV-related sexual behavior, compared to those without. Specifically, they were more likely to report having had four or more sexual partners (26.3% versus 2.0%), having had a spouse or boy/girlfriends who also had concurrent sexual partnerships (28.1% versus 8.2%), having exchanged drug for sex (12.4% versus 3.8%), having had sexual partners who were non-injection drug users (22.6% versus 10.1%), having had sexual partners who were injection drug users (25.3% versus 13.5%) and having used club drugs (26.3% versus 13.5%). There were no significant differences in consistent condom use between opiate users with sexual concurrency and those without. The same proportion (25.8%) of opiate users in the two groups reported having consistently used condoms when having sex with regular partners, and 46.3% of opiate users with sexual concurrency and 36.4% of those without such concurrency consistently used condoms with non-regular partners.
  
  
  CONCLUSIONS
  The expansion of the human immunodeficiency virus epidemic from high-risk populations to the general population in China may be driven by concurrent sexual partnerships. Behavioral interventions targeting safer sex should be integrated into harm reduction programmes.
authors: Department of Epidemiology and Community Health, Virginia Commonwealth University, Richmond, VA 23298, USA.
authors: Jian
authors: J
authors: Li
authors: Hongjie
authors: H
authors: Liu
authors: Jianhua
authors: J
authors: Li
authors: Jian
authors: J
authors: Luo
authors: Nana
authors: N
authors: Koram
authors: Roger
authors: R
authors: Detels
mesh_terms: D000293:Adolescent; D000328:Adult; D002681:China / Q000453:epidemiology; D017280:Condoms / Q000706:statistics & numerical data; D003430:Cross-Sectional Studies; D005260:Female; D015658:HIV Infections / Q000453:epidemiology* / Q000635:transmission*; D040261:Harm Reduction; D006556:Heroin Dependence / Q000453:epidemiology*; D006801:Humans; D008297:Male; D015999:Multivariate Analysis; D016485:Needle Sharing / Q000706:statistics & numerical data; D012747:Sexual Partners; D012944:Social Support; D015819:Substance Abuse, Intravenous / Q000453:epidemiology*; D047568:Unsafe Sex / Q000706:statistics & numerical data; D055815:Young Adult