<p><b>OBJECTIVE</b>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.</p><p><b>
METHODS</b>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.</p><p><b>RESULTS</b>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).</p><p><b>CONCLUSION</b>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.</p>