title: [Analysis on sexually transmitted diseases and the related risk factors among men who have sex with men in Jiangsu province].
abstract: OBJECTIVE
  To investigate infections of syphilis, neisseria gonorrhoeae, chlamydia trachomatis and the related risk factors in men who have sex with men (MSM) in Jiangsu province.
  
  
  METHODS
  A total of 400 MSM were enrolled by Snowball Sampling Method from August to October in 2010 and then 328 cases were surveyed by a questionnaire and collected serum sample 5 ml per person as well as rectal swab on the spot; all of the serum samples were tested for syphilis by ELISA and TRUST, and all of the rectal swabs were tested for neisseria gonorrhoeae or chlamydia trachomatis. The influencing factors of syphilis, neisseria gonorrhoeae, chlamydia trachomatis were analyzed by logistic regression analysis.
  
  
  RESULTS
  The 328 MSM were (32.46 ± 9.72) years old, 59.15% (194/328) were unmarried.75.00% (246/328) MSM had rectal sex with men in the past 3 months, and condom use rate for recent sex was 56.71% (186/328), while 53.05% (174/328) MSM didn't have sex with women in the last 3 months. The syphilis infection rate among MSM was 13.41% (44/328), the neisseria gonorrhoeae infection rate was 3.66% (12/328), and the chlamydia trachomatis rate was 11.59% (38/328). The number of sex partners was the key factor that influenced syphilis infections (OR = 4.213, 95%CI: 1.133 - 15.656).
  
  
  CONCLUSIONS
  The prevalence of syphilis and chlamydia trachomatis was high in MSM in Jiangsu, while risk behavior rate were high in the MSM and then should be intervened.
authors.affiliation: Department of HIV/AIDS Control, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, China.
authors.forename: Xi-ping
authors.initials: XP
authors.lastname: Huan
authors.forename: Yue-ping
authors.initials: YP
authors.lastname: Yin
authors.forename: Geng-feng
authors.initials: GF
authors.lastname: Fu
authors.forename: Ning
authors.initials: N
authors.lastname: Jiang
authors.forename: Qian-qian
authors.initials: QQ
authors.lastname: Zhang
authors.forename: Xue-ning
authors.initials: XN
authors.lastname: Zhang
authors.forename: Xiao-liang
authors.initials: XL
authors.lastname: Wang
authors.forename: Hai-yang
authors.initials: HY
authors.lastname: Hu
authors.forename: Bei
authors.initials: B
authors.lastname: Wang
authors.forename: Hai-tao
authors.initials: HT
authors.lastname: Yang
authors.forename: Xiang-sheng
authors.initials: XS
authors.lastname: Chen
mesh_terms: D000328:Adult; D002681:China / Q000453:epidemiology; D002690:Chlamydia Infections / Q000453:epidemiology*; D006069:Gonorrhea / Q000453:epidemiology*; D018451:Homosexuality, Male / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D012307:Risk Factors; D012309:Risk-Taking; D011795:Surveys and Questionnaires; D013587:Syphilis / Q000453:epidemiology*; D055815:Young Adult