[Surveillance on HIV-1 incidence among men who have sex with men in Chongqing, China, 2006 - 2008].
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.
Han
Mei
M
Chongqing Municipal Center for Disease Control and Prevention, Chongqing 400042, China.
Feng
Lian-gui
LG
Jiang
Yan
Y
Shen
Sheng
S
Ling
Hua
H
Ding
Xian-bin
XB
Ouyang
Lin
L
Zhao
Jin-kou
JK
Xiao
Yao
Y
Zhang
Min
M
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