- Research article
- Open Access
A Cross-sectional Survey of HIV Transmission and Behavior among Men Who Have Sex with Men in Different Areas of Inner Mongolia Autonomous Region, China
BMC Public Health volume 16, Article number: 1161 (2016)
Little research has been conducted on the human immunodeficiency virus (HIV) epidemic and the sexual intercourse habits of men who have sex with men (MSM) in crowded places, both locally and abroad. This study conducted a survey of MSM in different locales of Inner Mongolia to provide a reference for developing strategies or measures to prevent and control HIV among this understudied population.
We conducted a cross-sectional survey of men aged 18 years and older at different venues popular among MSM in Inner Mongolia. Between April and July 2012, MSM volunteered to participate in this study, receive HIV/syphilis testing, and complete a questionnaire about their behavior. A total of 1611 MSM participated. Participants signed a voluntary informed consent form, completed an anonymous questionnaire and were tested for HIV and syphilis antibodies.
Of the 1611 MSM surveyed, 6.83 and 23.65 % had HIV and syphilis, respectively, and the co-infection rate was 3.17 %. Sociodemographic factors such as age, culture, marital status, knowledge of acquired immune deficiency syndrome (AIDS) transmission, and peer education significantly differed between venues (P < 0.01). MSM who were under 22 years, 23–35 years, and over 36 years primarily contacted their potential partners online, at bars/other (streetwalkers), and at public baths/parks, respectively. MSM partners found in bars, in public baths, in parks and online were primarily high school students and technical secondary school students. MSM who were streetwalkers or cross-dressing male sex workers primarily had junior middle school education levels or below. Married MSM primarily had intercourse in public baths and parks, and MSM who had intercourse in public baths and parks also reported the greatest proportions of intercourse with women (39.1 and 35.0 %, respectively). Furthermore, MSM who had intercourse in parks reported having the most anal sex with same-sex partners and unprotected intercourse in the past 6 months. Unprotected intercourse with women in the past 6 months was also common among MSM who met partners in bathhouses or online. MSM were most likely to have anal sex with other men in public baths. MSM who had intercourse in bars were the least likely to have used a condom with female partners in the past 6 months. The culture of the MSM who had frequent intercourse with streetwalkers and cross-dressing male sex workers did not predict behavior.
This study indicated that AIDS-related risky behaviors as well as HIV and syphilis infection were associated with the different locations frequented by MSM. When developing intervention strategies for AIDS, it is better to conduct targeted health education and behavioral interventions at bars/online for MSM aged 23–35 years and at public baths/parks for MSM over 36 years. Additionally, the current survey showed that information on AIDS/sexually transmitted diseases (STDs) must be popularized to reach streetwalkers and cross-dressing male sex workers, whose mobility limits their attainment of higher levels of health education.
Although substantial efforts to prevent and control human immunodeficiency virus (HIV) infection and acquired immune deficiency syndrome (AIDS) have been implemented worldwide, the prevalence of these conditions has increased each year. According to the latest statistics, men who have sex with men (MSM) represent a major source of new HIV cases in North America and East Asia . Data from the Ministry of Health of the People’s Republic of China show that the proportion of Chinese MSM with AIDS increased from 14.7 % in 2009 to 17.4 % in 2011, indicating that the prevalence of AIDS has increased rapidly among MSM . A report in 2013 showed that 21.4 % of people newly diagnosed with AIDS in China were exposed to HIV through homosexual sex . In China, MSM live in secrecy, and it is therefore difficult for them to have stable sexual relationships. Moreover, they tend to have a relatively large number of sexual partners (including both stable and occasional sexual partners), and they prefer practicing relatively risky sexual behaviors (e.g., anal and oral sex). Therefore, this population is a high-risk group for HIV infection.
The Inner Mongolia Autonomous Region is located in northern China. With its rapid and recent economic development, numerous farmers, herdsmen, and migrants have moved into its cities, with the fastest economic growth occurring in those areas. Homosexual sex mostly occurs among this population. As of December 31, 2012, 1392 people in this region were HIV-infected, including 269 patients and 138 reported deaths . The AIDS epidemic continues to increase each year, and the Inner Mongolia Autonomous Region has particularly high rates of both sexually transmitted AIDS and syphilis among MSM and other high-risk groups. However, no data are yet available regarding the HIV infections caused by MSM who seek partners in different venues, and this lack of data impedes efforts to prevent and control HIV transmission among MSM. Accordingly, we conducted a survey among MSM between April and July 2012 to provide a reference for the development of strategies or measures to prevent and control HIV among this population in Inner Mongolia.
Few reports address HIV infection and behavior among MSM in different venues. A better understanding of the MSM who seek sex in bathhouses, bars, parks and other areas might lead to an improvement in AIDS prevention programs and intervention models. The current survey was conducted with this goal in mind.
Participant data were collected with the approval of the Medical Ethics Committee of the Centers for Disease Control and Prevention, Inner Mongolia Autonomous Region. The target population was men aged 18 years and older from the Inner Mongolia Autonomous Region who had had oral or anal sex with other men within the past year and volunteered to receive HIV and syphilis testing.
Participants signed a voluntary informed consent form and then completed an anonymous questionnaire. The questionnaire consisted of two sections: the first section pertained to sociodemographic information, knowledge of AIDS, sexual behavior, condom use, and previous AIDS testing, and the second section concerned information about AIDS and syphilis detection. These data were collected by the local Centers for Disease Control and Prevention. Each questionnaire had a unique number.
Training: The Inner Mongolia Autonomous Region Center for Disease Control and Prevention of the trained core MSM work-group members in Hohhot and Baotou to ensure that they had a clear understanding of the purpose of the study and were fully inspired, thereby ensuring the authenticity of the sample. Next, a comprehensive peer intervention was conducted among the MSM population.
Grouping: The locations MSM use to seek sexual partners were classified into five groups: bars (e.g., bars, dance halls, tea rooms, clubs); public baths (e.g., public baths, saunas, foot massage and massage parlors); parks (parks, public toilets, lawns, and squares); the Internet; and other (solicitation of streetwalkers and cross-dressing male sex workers).
Understanding of basic AIDS facts: The percentage of participants who knew basic facts about AIDS was calculated using the “AIDS Monitoring and Evaluation Framework of China (trial use)”. Respondents who correctly answered six or more questions were considered to have basic knowledge of AIDS. The questions included the following eight items: 1. Can a person tell that another person is infected with HIV based on appearance? 2. Can a person receive HIV from a mosquito bite? 3. Can a person receive HIV by eating with a person infected with HIV? 4. Can a person receive HIV via an HIV-infected blood transfusion? 5. Can a person receive HIV by sharing syringes with a person infected with HIV? 6. Can a baby born to an HIV-positive mother be infected with HIV? 7. Can the correct use of condoms reduce the spread of AIDS? and 8. Can having sex with only one partner reduce the spread of AIDS?
Referrals to preferred sexually transmitted disease (STD) clinic services were offered. Referrals to online information and consultations regarding AIDS were conducted through two websites: “Hohhot Sunshine Beyond the Frontier” and “Baotou Online Gay Platform.”
Five mL of blood was collected from each respondent to test for HIV and syphilis antibodies. Respondents who were HIV antibody-positive at the preliminary screening also received a confirmatory test. Preliminary HIV antibody screening was performed using reagents produced by Zhuhai Livzon Diagnostics Inc., and the confirmatory Western blots were performed using products by Beijing Wantai Bio-Pharmaceutical Co., Ltd.. Syphilis antibody screening was conducted via an enzyme-linked immunosorbent assay (ELISA), using reagents produced by Zhuhai Livzon Diagnostics Inc., and confirmatory syphilis testing was implemented via toluidine red unheated serum test (TRUST) using reagents produced by Beijing Wantai Bio-Pharmaceutical Co., Ltd.
The data were entered using EpiData 3.10 (Odense, Denmark) and analyzed using SPSS 15.0. All data were expressed as the mean ± standard deviation (SD). P-values < 0.05 were considered significant. Descriptive analyses, univariate χ2 tests, and unordered multinomial logistic regression were employed for statistical analysis.
A total of 1611 MSM participated in this study. Of these participants, 1513 were of Han ethnicity, and 98 were of other ethnicities; 1390 (86.28 %) were from the Inner Mongolia Autonomous Region, and 221 (13.72 %) were from other provinces. Participants’ ages ranged from 18 to 78 years (mean = 33.00 ± 9.4 years); 905 (56.18 %) were unmarried, 549 (34.08 %) were married, one (0.06 %) was cohabiting, and 156 (9.68 %) were divorced or widowed. Additionally, 390 (24.21 %) had a college degree or higher, 771 (47.86 %) had a senior high school or technical secondary school level of education, and 450 (27.93 %) had a junior middle school education or lower.
To meet sexual partners, 158 (9.81 %) respondents preferred bars, 373 (23.15 %) preferred public baths, 928 (57.61 %) preferred parks, 93 (5.77 %) preferred the Internet, and 59 (3.66 %) preferred solicitation of streetwalkers or cross-dressing prostitutes.
Meeting places by age
A significant difference emerged between age groups regarding the choice of where to meet potential partners (Table 1; χ2 = 57.97, P < 0.01). Respondents who were ≤ 22 years old mostly preferred the Internet; those who were 23–35 years old mostly preferred visiting bars or soliciting streetwalkers or cross-dresses prostitutes; and those ≥ 36 years old mostly preferred bathhouses and parks (Table 2).
Meeting places by education level
Education level had a significant effect on choice of meeting place (χ2 = 120.35, P < 0.01). Respondents with a senior high school, technical secondary school or higher level of education mostly preferred the Internet and bars, whereas those with a junior high school education or lower preferred parks, forming the second largest group of participants. Respondents with a junior high school education or lower also preferred soliciting streetwalkers and cross-dressing prostitutes.
Meeting places by marital status
Preferred meeting places differed significantly by marital status (χ2 = 49.8, P < 0.01). Unmarried MSM primarily preferred bars; married MSM primarily preferred public baths and parks; and divorced or widowed MSM primarily preferred soliciting streetwalkers and cross-dressing male sex workers.
Knowledge of AIDS
Of the MSM who completed the questionnaire, 1451 (90.07 %) had basic knowledge of AIDS. A significant difference was found with regard to meeting place based on level of education (χ2 = 55.22, P < 0.01). The highest proportion of those with basic AIDS knowledge was observed among the respondents who preferred bars, whereas the lowest (62.71 %) occurred among those who preferred to solicit streetwalkers and cross-dressing prostitutes.
Overall, 85.10 % (1371/1611) of the respondents reported having had anal sex with a male partner in the past 6 months; of those, 2.19 % (30/1371) reported having unprotected anal sex, and 43.98 % (603/1371) reported consistently using condoms. The occurrence of homosexual anal sex in the past 6 months differed significantly by meeting place (χ2 = 44.33, P < 0.01); however, the frequency of condom use for homosexual anal sex did not (χ2 = 13.27, P > 0.05). The frequency of homosexual anal sex in the past week differed significantly by meeting place (χ2 = 131.38, P < 0.01). Those who preferred parks had the highest proportion of participants who reported having homosexual anal sex once or less in the previous week, whereas respondents who preferred the Internet or soliciting streetwalkers and cross-dressing prostitutes reported having had anal sex 2 or 3 times in the previous week. The use of condoms during recent homosexual anal sexual encounters differed significantly by meeting place (χ2 = 29.25, P < 0.01); respondents who preferred parks were the most likely to have unprotected anal sex. The occurrence of commercial homosexual sex in the past 6 months differed significantly by meeting place (χ2 = 442.10, P < 0.01); respondents who preferred soliciting streetwalkers and cross-dressing prostitutes were more likely to have had commercial sex.
Overall, 32.5 % (525/1611) of the respondents reported having heterosexual sex in the past 6 months; of those, 34.9 % (183/525) had unprotected heterosexual sex, whereas 18.1 % (95/525) consistently used condoms. The proportion of respondents who had heterosexual sex in the past 6 months differed significantly by meeting place (χ2 = 46.99, P < 0.01); respondents who preferred public baths (39.1 %), followed by those who preferred parks (35.0 %), were the most likely to have had heterosexual sex. The frequency of condom use also differed by meeting place (χ2 = 18.81, P < 0.05). Those who preferred parks, followed by those who preferred bars, were the most likely to have had unprotected sex. Respondents who preferred public baths were the most likely to occasionally use condoms, whereas those who consistently used condoms were the most likely to prefer the Internet (Fig. 1).
Overall, 1246 (77.34 %) respondents had received peer education in the previous year. The receipt of peer education differed significantly by meeting place (χ2 = 120.04, P < 0.01). MSM who preferred soliciting streetwalkers and cross-dressing prostitutes, followed by those who preferred the Internet, were the least likely to have received peer education.
HIV and syphilis prevalence
Of the 1611 MSM studied, 381 (23.65 %) tested positive for syphilis, 110 (6.83 %) tested positive for HIV, and 51 (3.17 %) tested positive for both (Table 1).
Multivariate logistic regression analysis
We conducted a logistic regression analysis of the different places that MSM sought sexual partners to determine the factors most predictive of behavior. These findings could provide insight into the next steps for interventions, health education and health promotion.
To remove the influence of confounding variables, the logistic regression analysis included predictors such as sociodemographic information, knowledge of AIDS, and sexual behavior characteristics. The results revealed that age, education level, marital status, knowledge of AIDS, frequency of homosexual anal sex in the previous week, heterosexual sex in the previous 6 months, commercial homosexual anal sex in the previous 6 months, and peer education predicted MSM’s preferences for meeting places (P < 0.05). The influence of age on preference for public baths was 0.097 times the influence of age on other meeting places. A high level of cultural beliefs and knowledge of AIDS were associated with less anal sex among those who solicited commercial sex. The frequency of homosexual anal sex in the previous week showed the largest influence on preferences for public baths (OR = 1.582, 95 % CIs = 2.132–1.172). Heterosexual sex in the previous 6 months was associated with a 3.63- and 3.17-times odds of preferring public baths and parks, respectively, compared with preferring other places (Table 3).
Previous studies have performed only single-factor analyses on the prevalence of AIDS/STDs and the percentage of MSM with basic knowledge of AIDS transmission [5–39]. Most of these studies investigated the prevalence of AIDS/STDs among MSM who sought sex on the Internet [12–16, 18–23, 27–29]. This study was the first to analyze and compare multiple predictors (e.g., age and marital status) among MSM seeking sex at different venues, and the findings could enable the development of more effective intervention strategies for MSM based on their preferred meeting place. The results of this study are thus more applicable than those of previous studies.
Most MSM from the Inner Mongolia Autonomous Region of China in our sample were between 23 and 35 years old; this finding is consistent with the survey results of Luo et al. of 259 MSM in Hangzhou (74.5 %)  but inconsistent with those of Hakim et al., who found that 35.9 % of 603 MSM in Abidjan were between 23 and 35 years old .
The present study found that MSM sought sex in parks most often, followed by public baths and then bars. MSM who preferred meeting partners in parks and public baths were mostly middle-aged married men with lower levels of education; those who sought sex in bars were mostly young, highly educated, and unmarried; and those who sought sex on the Internet were mostly young, highly educated and unmarried students. Furthermore, MSM who sought sex by soliciting prostitutes were primarily young, less educated, and divorced; many were streetwalking and cross-dressing male sex workers. These results differ from previous findings, which showed that MSM in China who pursued sex via other means mostly sought partners through introductions from friends. These MSM were highly educated, of a high social status, and unmarried [42–44]. This difference in results might be primarily because of the difference in the volunteers’ social circles and the resulting difference in respondents. In general, people are more likely to trust those of a similar cultural, economic, and social background .
This study found that a high percentage of participants were familiar with basic facts about AIDS transmission (90.07 %, 1451/1611), which is consistent with the findings of Luo et al. (90 %) . The percentage of participants with basic knowledge of AIDS transmission differed by their preferred meeting place. Respondents who preferred bars, followed by those who preferred public baths, the Internet, and parks, were the most likely to have basic AIDS knowledge, whereas those who preferred soliciting streetwalkers and cross-dressing prostitutes were the least likely (<80 %). A separation between knowledge and behavior was observed among MSM respondents according to meeting place. This finding suggests that although current interventions focus on increasing the public’s knowledge of AIDS (MSM have an accurate knowledge of AIDS overall), it is difficult to change MSM’s high-risk behaviors, such as having multiple sexual partners, a high frequency of sex, and unprotected sex [45, 46]. On the other hand, although the role of condoms in disease prevention has been emphasized, this focus has deterred condom use among many people because they consider condoms to be synonymous with disease . Therefore, the root causes of not using or not consistently using condoms must be identified with regard to condom promotion to ensure that effective prevention and treatment measures can be achieved.
MSM who preferred soliciting streetwalkers and cross-dressing prostitutes, followed by those preferring the Internet, were the most likely to report receiving peer education. This finding suggests that social network platforms (e.g., QQ, forums, and microblogs) could be better used by local AIDS knowledge publicity campaigns to ensure the dissemination of effective health education.
Sex with multiple partners and unprotected sex are most likely to occur among MSM at public baths [48, 49]. The present results revealed that having anal sex multiple times was also more likely to occur at bathhouses. MSM who seek sex at parks and public baths were more likely to be married and to have had unprotected heterosexual sex in the previous 6 months, in their most recent heterosexual sex act, and in their most recent homosexual sex act. This finding might be related to their older age, lower education level, marital status, their method of passively seeking homosexual sexual partners, or their low self-protection awareness and abilities . The individuals in this group could easily infect their spouses and thus represent a “bridge” from the MSM population to the general population of HIV and syphilis transmission . In addition, this finding suggests that MSM who seek sex at parks and public baths are a high-risk population for HIV and syphilis infection.
MSM who seek sex in other ways accounted for only 3.66 % (59/1611) of the sample; these participants primarily sought sex via streetwalkers and cross-dressing prostitutes. This result differs from the findings of a previous study, which found that MSM mostly sought partners through introductions by friends . According to our survey results, this group was less educated, knew fewer basic facts about AIDS transmission and was more likely to have paid for homosexual sex. Moreover, they had poorer economic conditions, were highly sexually active, and usually assumed a subordinate position in intercourse; all of these factors make them more likely to demonstrate high-risk behaviors. Therefore, we recommend that public education programs promote knowledge of AIDS prevention and treatment in addition to providing free condoms .
MSM preferences for meeting places were related to age, education level, marital status, knowledge of AIDS, frequency of homosexual anal sex in the past week, heterosexual sex in the past 6 months, commercial homosexual anal sex in the past 6 months, and peer education (P < 0.05). Young MSM were more likely to prefer bars and the Internet, whereas middle-aged men preferred public baths and parks; this difference might be related to the participants’ cultural and recreational environments. The association between the frequency of homosexual anal sex in the past week and preferred meeting places was strongest for public baths (OR = 1.582, 95 % CIs = 2.132–1.172), indicating that public baths were the primary place that the MSM surveyed in this study chose to seek sex. MSM who sought sex via the Internet and bars were less likely to engage in heterosexual sex.
A total of 1611 MSM received syphilis and HIV testing in this study. Of these participants, 381 (23.65 %) tested positive for syphilis, 110 (6.83 %) tested positive for HIV, and 51 (3.17 %) tested positive for both; these rates are higher than those reported among MSM living in 61 Chinese cities (HIV = 4.9 %; syphilis = 11.8 %)  and higher than the HIV incidence estimated among Chinese MSM in 2011 (6.3 %) [40, 53, 54]. Syphilis can promote the spread of AIDS through ulcerations, and a high syphilis incidence enables HIV to spread rapidly. Therefore, STD diagnosis and treatment services among MSM should be strengthened and standardized, syphilis treatment referrals should be improved, and HIV screening should be conducted among patients at STD clinics to enhance early diagnosis and treatment.
In summary, MSM generally show high-risk sexual behaviors. Targeted health education and behavioral interventions should be conducted among MSM based on their meeting places to prevent and control the spread of HIV. Although this study analyzed only monitoring data from the Inner Mongolia Autonomous Region of China in 2012, the results revealed certain patterns that could provide a strong basis for conducting interventions among MSM at different meeting places in this region.
This survey has some limitations. Because snowball sampling was employed instead of common statistical sampling methods, the sample was not fully representative of the target population. Specifically, because of the discrete nature of the MSM population, inactive and elderly MSM were not included in sufficient numbers. The behavioral characteristics studied might also be biased. Access to the Internet was high, but not ideal, in the survey area in 2012. Furthermore, online communication primarily occurred via QQ. Because the community team was not experienced with online surveys, only a small number of MSM who sought sex via the Internet were included, which might have led to an underestimation of the actual results.
The results of this study indicate that in 2012, there were high rates of HIV and syphilis as well as a high level of knowledge of the basic facts of AIDS transmission among MSM who sought sex at different places. Multiple sexual contacts and unprotected sex were most likely to occur among MSM in public baths. A separation between knowledge and behavior was observed among MSM who preferred different meeting places. High-risk sexual behaviors were observed in most MSM. Targeted health education and behavioral interventions should be implemented based on the preferred meeting places of MSM to better prevent and control HIV and AIDS.
Acquired immune deficiency syndrome
Human immunodeficiency virus
Men who have sex with men
Sexually transmitted disease
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We are grateful for the active support and cooperation provided by the Prairie and Sky Workgroup, the Sunshine Workgroup, and the Rainbow Workgroup.
The Science and Technology Project of Inner Mongolia Autonomous Region supported this work (Project No. 20120404).
Availability of data and materials
The datasets supporting the conclusions of this article are available at Big Data General.
BT participated in the design of the study; LQ participated in the design and coordination of the study; WRW participated in its coordination and helped to draft the manuscript; YMG and JYY participated in the epidemiological investigation; JJD participated in the data collection; DWW performed the statistical analyses; All authors read and approved the final manuscript.
The authors declare that they have no competing interests with respect to the research authorship and publication of this article.
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Ethics approval and consent to participate
The Medical Ethics Committee of the Centers for Disease Control and Prevention, Inner Mongolia Autonomous Region, granted approval for the study. The purpose and importance of the study was explained to each study participant. To ensure the confidentiality of participant’s information, anonymous typing was used whereby names of participants and any other identifiers were excluded from the questionnaire. Informed consent was obtained from all participants before their participation in the study.
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Cite this article
Qu, L., Wang, W., Gao, Y. et al. A Cross-sectional Survey of HIV Transmission and Behavior among Men Who Have Sex with Men in Different Areas of Inner Mongolia Autonomous Region, China. BMC Public Health 16, 1161 (2016). https://doi.org/10.1186/s12889-016-3809-z
- Risky behaviors
- Men who have sex with men
- Inner Mongolia Autonomous Region
- Cross-sectional survey