title: [Study on the risk of HIV transmission by heterosexual contact and the correlation factors].
abstract: OBJECTIVE
  To understand the associated factors on human immunodeficiency virus (HIV) transmission via heterosexual contact and to provide evidence for decision-maker for prevention of HIV.
  
  
  METHODS
  Questionnaire survey was conducted in 250 HIV-positive persons to understand their socio-demographic characteristics and sexual behavior. Meanwhile, 431 persons who had heterosexual contact with the HIV carriers were traced to their HIV infection status. The factors associated with continued HIV transmission were reviewed by case-control analysis.
  
  
  RESULTS
  Among the 432 persons, 59 were HIV-positive because of heterosexual contact. The secondary attack rate and the growth rate was 13.7% (59/431) and 0.236 (59/250), respectively. The factors associated with the spread of HIV included: the degree of knowledge on HIV/AIDS, psychological reflection after infection, the condition for condom usage among spouses, and regular sexual partners or non regular sexual partners.
  
  
  CONCLUSIONS
  The secondary attack rate and the growth rate of HIV transmission by heterosexual contact are high. Improvement of the knowledge about HIV/AIDS prevention and control, enhancement of psychological education and promotion of condom usage can reduce the risk for continued HIV transmission.
authors.affiliation: Department of Epidemiology and Biostatistics, School of Public Health, Central South University, Changsha 410008; Center for Health Education and Propaganda, Hunan Province Health and Family Planning Commission, Changsha 410005, China.
authors.forename: Yanhui
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Epidemiology and Biostatistics, School of Public Health, Central South University, Changsha 410008, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Liang
authors.affiliation: Department of Epidemiology and Biostatistics, School of Public Health, Central South University, Changsha 410008; National Center for AIDS/STD Control and Prevention, China CDC, Beijing 102206, China.
authors.forename: Yugang
authors.initials: Y
authors.lastname: Bao
authors.affiliation: National Center for AIDS/STD Control and Prevention, China CDC, Beijing 102206, China.
authors.forename: Jiangping
authors.initials: J
authors.lastname: Sun
authors.affiliation: Department of Epidemiology and Biostatistics, School of Public Health, Central South University, Changsha 410008, China.
authors.forename: Hongzhuan
authors.initials: H
authors.lastname: Tan
mesh_terms: D015658:HIV Infections / Q000635:transmission*; D020010:Heterosexuality; D006801:Humans; D015994:Incidence; D012307:Risk Factors; D021841:Safe Sex; D012725:Sexual Behavior; D012747:Sexual Partners; D011795:Surveys and Questionnaires