title: [Surveillance on HIV-1 incidence among men who have sex with men in Chongqing, China, 2006 - 2008].
abstract: OBJECTIVE
  To estimate HIV-1 incidence among men who have sex with men (MSM) in Chongqing and to provide reasonable evidence for intervention strategy.
  
  
  METHODS
  Using "snowballing" and convenient sampling, 2989 MSM were recruited during 2006 - 2008. BED-CEIA was applied to the leftover blood samples to estimate the crude and adjusted HIV-1 incidence rates. Incidence was stratified by venues and age groups.
  
  
  RESULTS
  The incidence among MSM in Chongqing were 7.01%, 7.98% and 7.80% from 2006 - 2008 respectively with statistically significant differences by venues. The highest incidence was found among those who frequently visiting public baths/sauna and those MSM who find sex partners through internet, amounting to 17.87% and 12.22% respectively in 2007 and 2008. The 21 - 25 year-old group had the highest incidence in 2008, reaching 8.69%. Various adjustments brought down the estimated incidence across the three years.
  
  
  CONCLUSIONS
  HIV-1 incidence among MSM maintained at a high level across the three years but without an increasing trend.
authors.affiliation: Chongqing Municipal Center for Disease Control and Prevention, Chongqing 400042, China.
authors.forename: Mei
authors.initials: M
authors.lastname: Han
authors.forename: Lian-gui
authors.initials: LG
authors.lastname: Feng
authors.forename: Yan
authors.initials: Y
authors.lastname: Jiang
authors.forename: Sheng
authors.initials: S
authors.lastname: Shen
authors.forename: Hua
authors.initials: H
authors.lastname: Ling
authors.forename: Xian-bin
authors.initials: XB
authors.lastname: Ding
authors.forename: Lin
authors.initials: L
authors.lastname: Ouyang
authors.forename: Jin-kou
authors.initials: JK
authors.lastname: Zhao
authors.forename: Yao
authors.initials: Y
authors.lastname: Xiao
authors.forename: Min
authors.initials: M
authors.lastname: Zhang
mesh_terms: D000328:Adult; D002681:China / Q000453:epidemiology; D015658:HIV Infections / Q000453:epidemiology* / Q000635:transmission; D015497:HIV-1; D018451:Homosexuality, Male; D006801:Humans; D015994:Incidence; D008297:Male; D011159:Population Surveillance; D011633:Public Facilities; D012307:Risk Factors; D012494:Sampling Studies; D055815:Young Adult