Background
The
high and continually increasing prevalence of human immunodeficiency virus
(HIV) and other sexually transmitted diseases among men who have sex with men
(MSM) in China underscores the critical importance of examining the exact
sexual networks that result in HIV transmission, as well as HIV infection,
using powerful sampling methods, such as respondent-driven sampling (RDS), to
improve the sexual health of this population.
Methods
Using
RDS, a cross-sectional study was conducted among MSM in Wenzhou, Zhejiang
province, China from December 2013 to June 2014. The type of sex, numbers of
anal sex partners, male oral sex partners and vaginal sex partners, condom use
during each type of sex over the previous 6 months, prevention behaviors,
risk perception, and the burdens of HIV and syphilis were investigated and
analyzed.
Results
Of
424 MSM, a great number of them did anal sex, male oral sex, and vaginal sex
during the previous 6 months, and weighted estimates for the prevalence
that MSM did not conduct these sexual behaviors were 11.2 % (95 %
confidence interval [CI] =6.7–16.50 %), 20.3 % (95 % CI = 15.2–27.1 %), and 58.9 % (95 % CI = 52.1–65.8 %),
respectively. Multiple sexual partners, engaging in regular, casual and
commercial sex, and lack of condom use during all types of sex were common
among MSM. The estimated HIV and syphilis prevalences were 22.8 %
(95 % CI = 16.9–28.5 %) and 9.7 % (95 % CI = 6.4–13.6 %),
respectively. Of the participants, 53.5 % (95 % CI = 45.3–60.2 %) received HIV-related interventions
during the previous year, 48.1 %
(95 % CI = 39.7–55.1 %) had never been tested for HIV, and only 14.1 % (95 % CI =10.1–19.2 %) perceived a risk of contracting HIV.
Multiple logistic regression analysis revealed that age over 44 years
(adjusted odds ratio [AOR] = 3.60, 95 % CI = 1.34–9.64), a monthly income of 3001–4000 yuan (approximately 470–630 US$) (AOR = 1.96, 95 % CI = 1.67–3.60), multiple anal sex partners (AOR = 1.93, 95 %
CI = 1.15–3.24), awareness of the possibility of contracting HIV (AOR = 3.18, 95 %
CI = 1.56–6.48), and current syphilis infection (AOR = 3.01, 95 %
CI = 1.44–6.29) were predictors of HIV infection.
Conclusions
HIV
transmission has become highly prevalent and will likely become more prevalent
among MSM and their female partners if these risky sexual networks persist. Our
findings call for urgent and effective interventions to prevent the rapid
transmission of HIV among MSM in Wenzhou.
Below: Estimated proportion of
condom use during the previous half year. A1 = Anal sex with a regular partner (N = 226). A2 = Anal sex with a casual partner (N = 281). A3 = Anal sex with a sex worker (N = 28). A4 = Anal sex with group partners (N = 18). A5 = Anal sex after drinking alcohol (N = 42) A6 = Anal sex after using drugs (N = 18). O1 = Oral sex with a regular partner (N = 190). O2 = Oral sex with a casual partner (N = 250). O3 = Oral sex with a sex worker (N = 19). V1 = Vaginal sex with a regular female partner (N = 115). V2 = Vaginal sex with a casual female partner (N = 42). V3 = Vaginal sex with a female sex worker (N = 28).
Full article at: http://goo.gl/GH7G2O
By:
1Department of HIV/STD Control, Center for
Disease Control and Prevention of Zhejiang Province, No.3399, Binsheng Road,
Hangzhou 310051, People’s Republic of China
2Center for Disease Control and Prevention
of Wenzhou Municipality, Wenzhou 3250051, People’s Republic of China
3Center for Disease Control and Prevention
of Lucheng District, Wenzhou 325001, People’s Republic of China
4Nanjing Medical University School of Public
Health, Nanjing 211166, People’s Republic of China
More at: https://twitter.com/hiv_insight
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