Factors Influencing the Delivery of HIV-Related Services to Severely Mentally Ill Individuals: The Provider's Perspective.

BACKGROUND: Individuals with severe mental illnesses (SMI) are disproportionately vulnerable to HIV infection but are not consistently engaged in HIV-related services. OBJECTIVE: To understand factors influencing implementation of HIV-related services to individuals with SMI, we conducted a series of focus groups with multidisciplinary clinicians and staff serving individuals with SMI in outpatient, emergency, acute inpatient, and chronic inpatient levels of care. METHOD: Six focus groups with 30 participants were conducted, audiotaped, and transcribed. Our qualitative analysis drew on Grounded Theory. Using NVivo Version 9, coding was conducted by the first and senior authors; interrater reliability was verified by running Coding Comparison queries. RESULTS: The providers' narratives highlighted (1) patient-related factors, (2) stigma, and (3) administrative factors as themes particularly relevant to the delivery of HIV-related services to individuals with SMI. The reported relevance of these factors ranged across levels of care, from creating multiple barriers in the outpatient care to relatively seamless and effective delivery of full continuum of HIV-related services in the chronic inpatient environment, where adequate structural support is provided. CONCLUSION: Providers' narratives suggest that effective delivery of HIV-related services for individuals with SMI requires sustained structural support that is coordinated across levels of psychiatric care and tailored to individual patient's needs. The narratives also suggest that such support is currently not available.

Predictors of antiretroviral therapy initiation: a cross-sectional study among Chinese HIV-infected men who have sex with men.

BACKGROUND: Early antiretroviral therapy (ART) initiation is crucial to achieve HIV viral suppression and reduce transmission. HIV-infected Chinese men who have sex with men (MSM) were less likely to initiate ART than other HIV-infected individuals. We assessed predictors of ART initiation among Chinese MSM. METHODS: In 2010-2011, a cross-sectional study was conducted among MSM in Beijing, China. We examined ART initiation within the subgroup who were diagnosed with HIV infection prior to participation in the survey. Logistic regression models were fitted to evaluate socio-demographic and behavioral factors associated with ART initiation. The eligibility criterion in the 2010/2011 national HIV treatment guidelines was CD4 cell count <350 cells/µL or World Health Organization (WHO) clinical stage III/IV. RESULTS: Of 238 eligible HIV-infected participants, the median duration of HIV infection was 15 months (range: 31 days-12 years); 62 (26.1 %) had initiated ART. Among 103 men with CD4 counts <350 cells/µL, 38 (36.9 %) initiated ART. Being married to a woman (adjusted odd ratios [aOR]: 2.50; 95 % confidence interval [CI]: 1.07-5.87), longer duration of HIV infection (aOR: 10.71; 95 % CI: 3.66-31.32), and syphilis co-infection (aOR: 2.58; 95 % CI: 1.04-6.37) were associated with a higher likelihood of ART initiation. Of 135 men with CD4 count ≥350 cells/µL, 24 (18 %) initiated ART. Being married to a woman (aOR: 4.21; 95 % CI: 1.60-11.06), longer duration of HIV infection (aOR: 22.4; 95 % CI: 2.79-180), older age (aOR: 1.26; 95 % CI: 1.1-1.44), Beijing Hukou (aOR: 4.93; 95 % CI: 1.25-19.33), presence of AIDS-like clinical symptoms (aOR: 3.97; 95 % CI: 1.32-14.0), and history of sexually transmitted infections (aOR: 4.93; 95 % CI: 1.25-19.43) were associated with ART initiation. Compared with men who did not initiated ART, those with ART were more likely to receive counseling on benefits of ART (96.8 % vs. 66.4 %, P = 0 < 0.01), HIV stigma coping strategy (75.8 % vs. 65.9 %, P = 0.04), mental health (66.1 % vs. 52.9 %, P = 0.02), and substance use (46.7 % vs. 36.6 %, P = 0.04). CONCLUSIONS: We documented low rates of ART initiation among Chinese MSM. Policy changes for expanding ART eligibility and interventions to improve the continuum of HIV care are in progress in China. Impact evaluations can help assess continuing barriers to ART initiation among MSM.

Methadone maintenance therapy and HIV counseling and testing are associated with lower frequency of risky behaviors among injection drug users in China.

Three consecutive cross-sectional surveys were conducted among injection drug users (IDUs). Of 2,530 participants, 47.7% reported ever sharing needles, 78.2% having had unprotected sex in the last month, 34.4% not receiving either methadone maintenance therapy (MMT) or HIV voluntary counseling and testing (VCT), 4.8% ever receiving MMT-only, 36.6% ever receiving VCT-only, and 24.2% ever receiving both MMT and VCT. MMT-only and the combination of MMT and VCT had significant associations with needle sharing and on unprotected sexual behaviors. Effectively integrating VCT into MMT services is a logical way to maximize the impact of both interventions on risky behaviors among IDUs.

Use of geosocial networking (GSN) mobile phone applications to find men for sex by men who have sex with men (MSM) in Washington, DC.

Current advances have added geosocial networking (GSN) mobile phone applications as an option for men who have sex with men (MSM) to meet other men. This is the first study to assess GSN application use and sex-seeking behaviors of MSM recruited using venue-based sampling. Among the 379 MSM in this study, 63.6 % reported using GSN applications to find men in the past year. Nearly one-quarter of MSM had sex with a man met using a GSN application in the prior year; these men were more likely to be under 35 years old and have had sex with a man met on the Internet; they were also less likely to be HIV-positive and have <5 male sex partners in the last year. GSN applications are a viable option for use in sampling and delivering interventions to young MSM who are often missed through other methods.

Correlates of group sex among a community-based sample of men who have sex with men (MSM) in Washington, DC.

Participation of MSM in group sex events (GSEs) is an understudied phenomenon. Studies on GSEs identified significant proportions of MSM engaging in unprotected anal intercourse (UAI). We sought to identify the prevalence of group sex participation among MSM in Washington, DC and to characterize these experiences. Data were collected for NHBS-MSM-3 in 2011. More than one-quarter of MSM (27.2 %) reported engaging in group sex in the prior year, with one-third reporting no condom use with their sex partners (33.0 %). In multivariable logistic regression, men who participated in a GSE in the prior year were significantly younger, more likely to be white, and to have used crystal meth, poppers, and downers in the past year. The high prevalence of UAI during GSEs, especially in view of the fact that HIV-positive MSM were significantly less likely to report condom use, offers an opportunity to develop risk reduction interventions specific to GSE attendees.

HIV among women in the District of Columbia: an evolving epidemic?

The epidemiology of HIV in urban centers of the United States such as the District of Columbia (DC) is dynamic with rates of new HIV and AIDS diagnoses as well as risk factors elevated. Correlates of HIV among heterosexual women extend beyond traditional, individual risk factors to structural factors. The purpose of this study was to compare proportions of HIV and correlates of HIV among women participating in National HIV behavioral surveillance (NHBS) system in 2006-7 (NHBS Cycle 1) and 2010 (NHBS Cycle 2). Analysis of 677 female participants at elevated risk for HIV revealed high prevalence of individual-level HIV-associated risk factors (e.g., sexual behavior) and socio-structural associated risk factors (e.g., homelessness, incarceration, lack of health insurance). While a greater proportion of women were HIV-infected in Cycle 2, after controlling for the distribution of demographic characteristics to adjust for a change in eligibility criteria, the pooled sample did not reveal a significantly increased proportion of HIV-infected women in Cycle 2. Homelessness and condom use were associated with greater relative odds of HIV after adjustment for confounders, and non-injection drug use was associated with reduced odds. Findings inform our understanding of the continuing HIV epidemic in DC and support development of effective interventions to slow the epidemic among women in DC and similar urban centers.

Measures of condom and safer sex social norms and stigma towards HIV/AIDS among Beijing MSM.

Social norms around condom use and safe sex as well as HIV/AIDS stigma are used to identify persons at higher risk for HIV. These measures have been developed and tested in a variety of settings and populations. While efforts have been undertaken to develop context specific measures of these domains among Chinese MSM, the feasibility of using existing measures is unknown. A survey of MSM, based on respondent-driven sampling, was conducted in Beijing. Existing measures of condom social norms, attitudes towards safer sex and HIV/AIDS stigma were piloted. Internal consistency of all measures was high. As expected higher levels of condom social norms and positive attitudes towards safer sex were associated with condom use. HIV/AIDS stigma and discrimination had a significant relationship with never having an HIV test and lack of discussion of HIV/AIDS with male partners. Correlates of low condom social norms were age, education, employment and resident status. Existing measures of condom social norms, attitudes towards safer sex and HIV/AIDS stigma appear to be appropriate for use among Chinese MSM. Using existing measures as opposed to developing new measures has the potential to expedite investigations into psychosocial correlates of HIV risk behavior.

HIV testing among heterosexuals at elevated risk for HIV in the District of Columbia: has anything changed over time?

The District of Columbia launched a routine HIV testing initiative in 2006. We examined HIV testing behaviors among heterosexuals at risk for HIV over time using CDC National HIV Behavioral Surveillance data from Washington, DC for the heterosexual cycles from 2006 to 2007 (Cycle 1) and 2010 (Cycle 2). Past year and past 2-year HIV testing across study cycles were compared using Chi square tests. Weighted multivariable logistic regression identified correlates of past year testing. The majority of participants across both cycles were black and female. Cycle 1 participants were significantly more likely to have ≥4 partners in the past year, casual sex partners, and have anal sex at last sexual encounter (p < 0.05). Lifetime testing was high, and individuals from Cycle 2 versus Cycle 1 were more likely to have been tested in the past 2 years. There were no significant differences in past year testing or being offered the HIV test at last health care visit by cycle. Independent correlates of past year testing were seeing a health care provider in the past year and using condoms at last vaginal sex. In conclusion, although past year testing did not differ between the two data collection years, the proportion of heterosexuals testing in the past 2 years was higher in Cycle 2 versus Cycle 1, suggesting successful expansion of HIV testing between the two time periods.

Site migration in seeking care services from multiple providers is associated with worse clinical outcomes among HIV-infected individuals in Washington, DC.

Washington, DC, is a metropolitan city with a severe HIV epidemic and faces challenges in retaining people living with HIV (PLWH) in quality care. This study assessed site migration in seeking care services and its correlates among PLWH in DC. PLWH diagnosed before 2008 and living through the end of 2010 were analyzed. Six scenarios of site migration were examined as patients visited =2, =3, and =4 different providers for their CD4 cell count and/or viral load (VL) tests in the past 3 years from 2008 to 2010 and 2 years from 2009 to 2010, respectively. Of 6480 patients analyzed from 2008 to 2010, 18.4% had CD4 < 200 cells/mm(3), 30.5% had VL > 400 copies/mL, and 76.6% were retained in same care sites; 23.4%, 5.0%, and 0.9% visited =2, =3, and =4 sites in the past 3 years from 2008 to 2010, respectively. Of 5954 patients analyzed from 2009 to 2010, 16.8% had CD4 < 200 cells/mm(3), 29.4% had VL > 400 copies/mL, and 81.9% were retained in same care sites; 18.1%, 3.1%, and 0.6% visited =2, =3, and =4 sites in the past 2 years from 2009 to 2010, respectively. Multivariable logistic regression analyses revealed that migration across six scenarios are consistently associated with CD4 < 200 cells/mm(3) and VL > 400 copies/mL. Site migration was common and associated with lower CD4 and higher VL among PLWH in DC. Frequent migration might be a factor in achieving optimal health outcomes for a subset of patients. Site migration might potentially limit effective delivery of high quality care and treatment services. The preliminary findings underscore the need for further research to assess the predictors of migration and its impact on stage of care.

Childhood sexual abuse and HIV-related risks among men who have sex with men in Washington, DC.

Childhood sexual abuse (CSA) has been reported to be disproportionately higher among men who have sex with men (MSM) than among heterosexual men; it has also been found to be significantly positively associated with HIV status and HIV risk factors, including unprotected anal intercourse. The purpose of this study was to assess the correlates of CSA in a sample of community-recruited MSM, investigate race as a potential effect modifier, and describe the independent association between CSA and HIV infection in Washington, DC. A total of 500 MSM were recruited by venue-based sampling in 2008 as part of the National HIV Behavioral Surveillance. More than one-half of MSM identified as White, while one-third identified as Black. CSA was reported by 17.5 % of the 451 MSM, with the first instance of abuse occurring at a median age of 8.3 (interquartile range = 5.0, 11.0). In multivariable analysis, HIV-positive men were significantly more likely to report a history of CSA compared to HIV-negative men after adjusting for intimate partner violence in the last 12 months, having been arrested in the last 12 months, and depressive symptoms. HIV-positive MSM had more than four times the odds of reporting CSA after controlling for other correlates (aOR = 4.19; 95 % CI 2.26, 7.75). Despite hypothesizing that race modified the effect of CSA on HIV infection we found this was not the case in this sample. More research is needed to investigate the potential pathway between a history of CSA and HIV infection, and how this contributes to driving the HIV epidemic among MSM in Washington, DC.

Syndemics of syphilis, HCV infection, and methamphetamine use along the east coast of China.

BACKGROUND: An upsurge in club drug use has been observed in recent years in some cities of China, especially methamphetamine, which is quickly replacing heroin to become the most widespread drug across the nation. This study investigated the type of drugs used, syphilis and hepatitis C virus (HCV) infection and the correlates for syphilis, HCV and unprotected commercial sex behavior among drug users in two cities along the east coast of China. METHODS: A cross-sectional survey conducted in 2010 provided demographics, sexual and drug use behaviors, HIV knowledge and the utilization of intervention services among drug users. Blood samples were tested for HIV, syphilis, and HCV infection. RESULTS: Of 805 eligible participants, 0.2% were infected with HIV, 3.7% with HCV, and 9.6% with syphilis. Of the participants, 96.6% were methamphetamine users, 11.9% reported ever having used ≥2 types of these drugs, and 11.4% reported ever injecting drugs. In the multivariable logistic regression analysis, participants infected with syphilis were more likely to be female (adjusted odds ratio (AOR)=2.8, 95% confidence interval (CI): 1.2-6.5), have ever had commercial sex in the past 12 months (AOR=2.0, 95% CI: 1.0-3.9), be infected with HCV (AOR=12.1, 95% CI: 4.1-20.3) and less likely to have ever had sex with regular partners in the past 12 months (AOR=0.2, 95% CI: 0.1-0.6). Participants infected with HCV were more likely to have ever injected drugs (AOR=2.7, 95% CI: 1.1-6.5) and be infected with syphilis (AOR=8.0, 95% CI: 3.5-18.0). Participants who had unprotected sex with commercial sex partners in the last sexual encounter were more likely to be female (AOR=2.9, 95% CI:1.7-4.9), have middle school or lower level education (AOR=3.4, 95% CI:2.0-5.5), never have received intervention in the last year (AOR=2.1, 95%CI:1.2-3.6) and be infected with syphilis (AOR=4.2, 95% CI:2.4-7.4). CONCLUSIONS: Methamphetamine is the predominant drug used among the drug users, the prevalence of syphilis and HCV infection are alarmingly high, and unprotected commercial sex was common among this group. The findings highlight the need for effective, multifaceted interventions addressing sexual and drug use-related risky behaviors among this group. Further research is needed to better understand the causal pathway of the syndemics.

HIV treatment as prevention: contradictory perspectives from dynamic mathematical models.

The preventative effects of antiretroviral therapy for people with HIV have been debated since they were first raised. Models commenced studying the preventive effects of treatment in the 1990s, prior to initial public reports. However, the outcomes of the preventive effects of antiretroviral use were not consistent. Some outcomes of dynamic models were based on unfeasible assumptions, such as no consideration of drug resistance, behavior disinhibition, or economic inputs in poor countries, and unrealistic input variables, for example, overstated initiation time, adherence, coverage, and efficacy of treatment. This paper reviewed dynamic mathematical models to ascertain the complex effects of ART on HIV transmission. This review discusses more conservative inputs and outcomes relative to antiretroviral use in HIV infections in dynamic mathematical models. ART alone cannot eliminate HIV transmission.

Dual epidemics of syphilis and methamphetamine use among drug users in Shandong Province of China.

We assessed the types of drugs, the prevalence of HIV, syphilis, and its correlates among Shandong's drug users in China. Two consecutive cross-sectional surveys in 2009 and 2010 provided demographics, types of drugs, sexual and drug-use behaviors, and HIV-related services. Of the 1320 unique, eligible participants, 81.1% were male, two-thirds <35 years of age, 13.0% non-Shandong residents; in the past year, majority (96.4%) reported ever using methamphetamine, 3.4% using heroin, 8.6% using ≥2 types of these drugs and 8.0% injecting drugs, 63.8% having commercial sex. HIV and syphilis prevalence were 0.2% and 8.3%, respectively. In multivariable logistic regression analysis, syphilis was independently associated with female, non-Shandong residents, higher levels of education, and 2010. Synthetic drugs, especially methamphetamine, have become the predominant sources of drug addiction. The emerging epidemic of syphilis potentially driven by methamphetamine use underscored the urgency to implement an effective sex and substance use-related intervention.

Correlates of frequency of HIV testing among men who have sex with men in Washington, DC.

In Washington, DC, the leading mode of HIV transmission is through men who have sex with men (MSM) behavior. This study explored differences between frequent HIV testers (men testing at least twice a year) and annual or less frequent testers (men testing once a year or less) in DC. Nearly, one-third of MSM reported testing for HIV at least four times in the prior two years. In the multivariable model, frequent testers had significantly higher odds of being aged 18-34 (aOR =1.94), knowing their last partner's HIV status (aOR=1.86), having 5+ partners in the last year (aOR=1.52), and having seen a health-care provider in the last year (aOR=2.28). Conversely, frequent testers had significantly lower odds of being newly HIV positive (aOR=0.27), and having a main partner at last sex (vs. casual/exchange partner; aOR=0.59). Medical providers need to be encouraged to consistently offer an HIV test to their patients, especially those who are sexually active and who have not tested recently.

HIV risk perception among men who have sex with men in two municipalities of China--implications for education and intervention.

Men who have sex with men (MSM) are recognized as being at high risk for HIV infection. While studies have found that the prevalence of risky behaviors routinely remained high among MSM, few have focused on reasons why MSM may perceive they were or were not at risk for HIV infection. The objective of this study was to examine HIV risk perception among MSM in Beijing and Chongqing, China. A qualitative study consisting of eight focus group discussions and 65 in-depth interviews were conducted with MSM in the two cities. Participants felt that most MSM were aware of the high prevalence of HIV infection among MSM. Yet despite this awareness, most participants thought it was unlikely they would become infected with HIV. The reasons raised by participants included: AIDS was a foreign disease, cleaning after sex prevented transmission, being the insertive partner during sex was not risky, their partner(s) could be trusted, and feeling lucky made HIV/AIDS acquisition unlikely. The findings of this study suggest that a multi-pronged and tailored approach is needed to increase risk perception and safe sex behaviors among MSM in China. This may be achieved through HIV/AIDS interventions that use MSM-friendly media targeting misconceptions of HIV risk, stigma, and discrimination rather than simply distributing condoms.

Differing HIV risks and prevention needs among men and women injection drug users (IDU) in the District of Columbia.

Washington, DC has among the highest HIV/AIDS rates in the US. Gender differences among injection drug users (IDUs) may be associated with adoption of prevention opportunities including needle exchange programs, HIV testing, psychosocial support, and prevention programming. National HIV Behavioral Surveillance data on current IDUs aged ≥18 were collected from 8/09 to 11/09 via respondent-driven sampling in Washington, DC. HIV status was assessed using oral OraQuick with Western Blot confirmation. Weighted estimates were derived using RDSAT. Stata was used to characterize the sample and differences between male and female IDU, using uni-, bi-, and multivariable methods. Factors associated with HIV risk differed between men and women. Men were more likely than women to have had a history of incarceration (86.6 % vs. 66.8 %, p < 0.01). Women were more likely than men to have depressive symptoms (73.9 % vs. 47.4 %, p < 0.01), to have been physically or emotionally abused (66.1 % vs. 16.1 %, p < 0.0001), to report childhood sexual abuse (42.7 % vs. 4.7 %, p < 0.0001), and pressured or forced to have sex (62.8 % vs. 4.0 %, p < 0.0001); each of these differences was significant in the multivariable analysis. Despite a decreasing HIV/AIDS epidemic among IDU, there remain significant gender differences with women experiencing multiple threats to psychosocial health, which may in turn affect HIV testing, access, care, and drug use. Diverging needs by gender are critical to consider when implementing HIV prevention strategies.

Mutual HIV disclosure among HIV-negative men who have sex with men in Beijing, China, 2010.

HIV is rising rapidly among Chinese men who have sex with men (MSM). Discussion of HIV status between sexual partners is potentially a key prevention behavior. It is unclear if HIV-negative Chinese MSM talk about HIV and disclose their HIV status with sexual partners. Understanding the correlates of disclosure among this population could provide insight into developing disclosure-based interventions. We conducted a respondent driven sampling based study of 500 MSM in Beijing. A total of 332 men had a previous HIV-negative test result and thus considered themselves to be HIV-negative and were included in our analysis of disclosure. Equal numbers of these men reported talking about HIV and disclosing their HIV status to at least one sexual partner. MSM who disclosed were more likely to be living with a main partner. No other demographic characteristics were associated with disclosure in bivariate analysis. We also used data on up to three sexual partners per participant to examine disclosure on the partnership level. Main partnerships, meeting partners at bars/clubs, sometimes using alcohol before sex in a partnership, and usually having sex at home compared to other venues were associated with disclosure. Using generalized estimating equation analysis to characterize individuals from their partnership data, we found only having at least one main partnership and knowing people who were infected with HIV to be associated with a participant being a discloser. Interventions that wish to harness discussion of HIV and HIV status among Chinese MSM will need to focus on moving these discussions towards having them with casual partners.

An integrated individual, community, and structural intervention to reduce HIV/STI risks among female sex workers in China.

BACKGROUND: We assessed the effectiveness of an integrated individual, community, and structural intervention to reduce risks of HIV and sexually transmitted infections (STIs) among female sex workers (FSWs). METHODS: The integration individual, community, and structural intervention was implemented from 2004 to 2009 in six counties of Shandong Province. Post-intervention cross-sectional surveys were conducted in six intervention counties and 10 control counties. RESULTS: Of 3326 female sex workers were recruited and analyzed in the post-intervention survey with 1157 from intervention sites and 2169 from control sites. No HIV positive was found in both intervention and control counties. The rate of syphilis was 0.17% for intervention sites and 1.89% for control sites (OR=11.1, 95% CI: 2.7, 46.1). After adjusted for age, marital status, education, economic condition, recruitment venues, the rates of condom use in the last sex with clients(AOR=2.7; 95% CI: 1.9, 3.8), with regular sex partners(AOR=1.5; 95% CI: 1.1, 1.9) and consistent condom use in the last month with clients (AOR=3.3; 95% CI: 2.6, 4.1) and regular sex partners (AOR=1.7; 95% CI: 1.3, 2.3) were significantly higher in intervention sites than that in control sites. The proportion of participants correctly answered at least six out of eight HIV-related questions (83.3%) in intervention sites is significant higher than that (21.9%) in control sites (AOR=24.7; 95% CI: 2.5, 42.7), the five indicators related to HIV-related intervention services ever received in the last year including HIV testing(AOR=4.9; 95% CI: 2.8, 6.7), STD examination and/or treatment(AOR=5.1; 95% CI: 4.2, 6.4), free condom(AOR=20.3; 95% CI: 14.3, 28.9), peer education(AOR=4.3; 95% CI: 3.5, 5.4), education materials(AOR=19.8; 95%CI: 13.1, 29.8) were significantly higher in intervention sites than that in control sites, the participants in the intervention sites are more likely to seek medical treatment when they had any disorders (AOR=3.2; 95% CI: 2.5, 4.2). CONCLUSION: This study found that the integrated individual, community, and structural intervention showed positive impact in reducing HIV and STI risks among FSWs.

Gender and ethnic disparities of HIV and syphilis seroconversions in a 4-year cohort of injection drug users.

This study assessed gender and ethnic disparities of HIV and syphilis seroconversions in a cohort of injection drug users (IDUs) in Southwest China. A cohort of HIV-seronegative IDUs was followed up from November 2002 to January 2007. The average seroincidence for HIV and syphilis was 2.2 and 4.2 per 100 person-years (PYs), respectively. Multivariable Poisson regression models indicated that the predictors for incident HIV seroconversion included non-Han minority ethnic groups (RR: 5.2; 95% CI: 1.9-14.4) and injecting drugs > or = 7 times/week in the past 3 months (RR: 3.6; 95% CI: 1.4-9.8). The predictors for incident syphilis seroconversion included female (RR: 4.1; 95% CI: 1.8-9.3) and being married or cohabiting (RR: 2.7; 95% CI: 1.2-5.9). These findings suggested that HIV continues to spread among IDUs, especially among Yi and other minority ethnic groups, and frequent risky injections might be the major diver of the epidemic. Female IDUs are disproportionally affected by syphilis. Further research is needed to better understand the ethnicity disparity for HIV and gender disparity for syphilis.

Untested and undiagnosed: barriers to HIV testing among men who have sex with men, Beijing, China.

OBJECTIVES: Undiagnosed HIV presents great potential for the spread of infection. The authors identify the prevalence and correlates of never testing and being unaware of HIV infection in Beijing men who have sex with men (MSM). METHODS: Cross-sectional biological and behavioural survey using respondent-driven sampling; 500 MSM were included. RESULTS: HIV prevalence was 7.2% with 86.1% unaware of their infection; 33.2% had never tested. Never testing was associated with lower educational (adjusted odds ratio (AOR) 1.6, 95% CI (CI) 1.1 to 2.5), living in Beijing for ≤3 years (AOR 1.5, 95% CI 1.0 to 2.3), unprotected anal intercourse with most recent male partner (AOR 1.6, 95% CI 1.0 to 2.4), being unaware of the most recent male partner's HIV status (AOR 3.6, 95% CI 2.1 to 6.1) and holding stigmatised attitudes towards persons with HIV (AOR 1.1 per scale point, 95% CI 1.0 to 1.1). Predictors of having undiagnosed HIV infection were being married (AOR 2.4, 95% CI 1.0 to 5.4), living in Beijing for ≤3 years (AOR 3.6, 95% CI 1.5 to 8.4), being unaware of the most recent male partner's HIV status (AOR 6.8, 95% CI 0.9 to 51.6) and holding negative attitudes towards safe sex (AOR 1.1 per scale point, 95% CI 1.0 to 1.1). CONCLUSIONS: Recent attention has focused on HIV prevention interventions that depend upon knowing one's serostatus, including viral load suppression, prevention with positives, pre-exposure prophylaxis and seroadaptation. Until the low level of testing and resulting high level of undiagnosed HIV infection are addressed, these tools are not likely to be effective for MSM in China.