HIV Research with Men who Have Sex with Men (MSM): Advantages and Challenges of Different Methods for Most Appropriately Targeting a Key Population

The Development and the Assessment of Sampling Methods for Hard-to-Reach Populations in HIV Surveillance

Due to stigma or legal issues, populations with higher HIV risk are often hard to reach, which impedes accurate population estimation of HIV burden. To better sample hard-to-reach populations (HTRPs) for HIV surveillance, various sampling methods have been designed and/or used since HIV epidemic following the first reported AIDS cases in 1981. This paper describes the development and the assessment (i.e., validity and reproducibility) of approximately eight sampling methods (e.g., convenience sampling, snowball sampling, time location sampling, and respondent-driven sampling) for HTRPs in HIV surveillance, with a focus on respondent-driven sampling (RDS). Compared to other methods, RDS has been greatly assessed. However, current evidence is still inadequate for RDS to be considered the best option for sampling HTRPs. The field must continue to assess RDS and to develop new sampling approaches or modifications to existing approaches.

Effectiveness of the Therapeutic Lifestyle Change Diet Intervention to Improve Biochemical Markers of Cardiovascular Diseases in HIV-Infected Patients with Dyslipidemia

INTRODUCTION

This randomized controlled trial study aimed to investigate the effectiveness of therapeutic lifestyle change (TLC) diet intervention by the registered dietitians.

METHODS

Eighty-two people living with HIV (PLHIV) with dyslipidemia were randomly allocated to the intervention group as well as another 82 PLHIV with dyslipidemia to the control group. Participants in the intervention group were instructed to meet the registered dietitians every 2 weeks at weeks 0, 2, 4, 6, and 12 (a totally of 12 weeks) to receive individual medical nutrition therapy according to the TLC diet principles, while the participants in the control group only received routine health care service.

RESULTS

Triglycerides, total cholesterol, and LDL cholesterol of the intervention group were significantly lower than those of the control group at the endpoint (p < 0.05). In addition, these biomarkers and C-reactive protein of the intervention group were significantly lower when compared with their baseline (p < 0.05). The overall dietary habits of participants in the intervention group were significantly improved at the end of the study (p < 0.05).

CONCLUSION

The medical nutrition therapy intervention based on the TLC diet is effective in improving blood lipid profiles among PLHIV with dyslipidemia.

Cultural-Psychological Differences, Social Acceptance of Same-Sex Relationships, and Dating App Use Motives of Young GBMSM: A Comparative Study Across Hong Kong, Taipei, and Osaka

Gay-specific mobile dating apps such as Grindr are popular among young gay, bisexual, and other men who have sex with men (GBMSM) worldwide. However, how the use of these apps differs between regions is underexplored. In this study, we drew on the uses and gratifications literature and cross-cultural studies to examine how cultural-psychological differences (sensation seeking and communication apprehension) and social acceptance of same-sex relationships are associated with the motives for using gay dating apps in three East Asian cities. Using a sample of 18-34-year-old GBMSM (217 participants from Hong Kong, 330 from Taipei, and 175 from Osaka), we found that the Taiwanese participants scored higher than their Japanese counterparts on almost all motives. Sensation seeking was positively associated with using gay dating apps for casual sex, self-worth validation, and thrill of excitement in both Taipei and Osaka. Communication apprehension was positively associated with using the apps for ease of communication in all three cities. Social acceptance of same-sex relationships had positive relationships with using the apps for love in Hong Kong and casual sex in Taipei but negative relationships with other motives in Taipei and Osaka. These inconsistent relationships between the variables across the three cities point to the importance of cultural and regional specificity in predicting gay dating app use motives.

Sexual exposure to HIV in Angolan men who have sex with men immigrants: A cross-sectional study in Portugal and Brazil

BACKGROUND

In different contexts, international migrants are vulnerable to health disparities that increase the risk of HIV/AIDS exposure and continue to bear a significant burden of new virus infections in developed and developing countries. In this study, we sought to examine sexual practices and factors linked to HIV exposure among a sample of Angolan men who have sex with men (MSM) immigrants.

METHODS

The study was conducted in two Portuguese-speaking countries, Brazil and Portugal, and involved 250 Angolan MSM immigrants between September 2020 and February 2021, using sampling methods to constitute the sample and the HIV Incidence Risk Index (HIRI) to define virus exposure risk. Odds ratio (OR) and adjusted odds ratio (aOR) were used to calculate the chances of higher HIRI index in the sample.

RESULTS

Our results showed that 76.8% of participants presented a high HIRI index, influenced by the practice of chemsex (aOR: 4.26), having a known/repeated partner (aOR: 4.59), and engaging in passive sex without a condom in the last 30 days (aOR: 1.29) or 6 months (aOR: 1.98).

CONCLUSIONS

It is crucial to focus on this vulnerable population and implement sexual health policies that integrate combined HIV prevention measures aimed at immigrant MSM.

Sexting Among Men Who Have Sex with Men in Hong Kong and Taiwan: Roles of Sensation-Seeking, Gay Identity, and Muscularity Ideal

Prior studies found that sexting was associated with risky sexual activities and that men who have sex with men (MSM) engaged in more frequent sexting than their heterosexual counterparts. Therefore, it is pertinent to understand what factors are associated with sexting among MSM. This study explored the relationships between sensation-seeking, gay identity confusion, and muscularity ideal with sexting behaviors. An online survey was administered to 355 and 448 18-34-year-old MSM in Hong Kong and Taiwan, respectively. While the number of sexting partners and the frequency of sexting were similar across the two regions, they had different associations with psychological factors. In Hong Kong, sensation-seeking was positively related to the number of sexting partners, while in Taiwan, it was positively related to the frequency of sending sexts. In Hong Kong, MSM who were more confused about their sexual orientation had fewer sexting partners. In both regions, MSM holding a stronger muscularity ideal also had more sexting partners. Gay identity confusion and muscularity ideal were associated with sexting under pressure in Taiwan; all three psychological factors concerned were associated with sexting under pressure in Hong Kong. Overall, these results showed that some MSM found sexting to be a sensation-fulfilling activity, but some were vulnerable to sexting under pressure. Counseling services to MSM about their sexual identity and concern for muscularity are needed to prevent them from becoming victims of forced sexting. Finally, the inconsistent results for the Hong Kong and Taiwanese samples indicated the importance of considering regional specificity in sexting research.

The use of online social media for the recruitment of people living with HIV in Spain and Latin America: Lessons from two studies

Various barriers make recruiting a difficult task for researchers, especially when recruiting people living with HIV (PLWH) or conducting longitudinal studies. Effective recruitment is crucial to the validity of studies, and in this regard, social media can come to aid, although researchers usually rely on paid advertisements. This paper describes the free social media strategies used for participant recruitment in two studies carried out with PLWH in Spain and Latin America. Study 1 was a cross-sectional study on the validation of two stigma scales with a 1-month retest. Study 2 was a longitudinal study exploring the mental health of newly diagnosed PLWH, with a second assessment after 6 months. Facebook posts, Twitter mentions, and discussion forums were used in both studies. Study 2 also recruited participants through a healthcare centre. In Study 1, 5-month recruitment yielded a sample of 458 PLWH, averaging 91.6 surveys/month and a 43% retention rate. In study 2, recruitment took 16 months, yielding a final sample of 145 newly diagnosed PLWH, 92 from the healthcare centre (5.75 surveys/month) and 53 from social media (3.31 surveys/month), with 95% and 60% retention rates, respectively. Participants in Study 2 did not differ in sociodemographic characteristics by recruitment method, except for the region of origin and financial difficulty (more diverse origin and greater difficulty emerged in social media participants). Greater psychological distress and lower personal and social resources were also found in social media participants. These data indicate that free social media recruitment is a feasible and effective tool for the recruitment of Spanish-speaking PLWH, although it is best used in combination with traditional methods for newly diagnosed PLWH and longitudinal studies.

Leveraging Resilience-supportive Strategies to Enhance Protective Factors in Young Sexual Minority Men: A Scoping Review of HIV Behavioral Interventions Implemented in High-income Countries

Behavioral HIV interventions focused on strengthening young sexual minority men's (SMM) internal (assets) and external (resources) protective factors are promising, yet their evaluation as resilience-supportive strategies to minimize or negate HIV-related risks remain understudied. The objective of this scoping review was to describe resilience-supportive intervention strategies that have been used to achieve desired HIV behavioral outcomes and to identify how these strategies have been evaluated using a resilience analytic framework. Our scoping review uncovered 271 peer-reviewed articles, of which 38 were eligible for inclusion based on our review criteria. The majority of interventions relied on social support strategies as their primary resilience-supportive strategy. A third of interventions reviewed analyzed their findings from a deficits-focused model, another third used compensatory resilience models, and the remaining interventions employed a hybrid (i.e., deficit and compensatory model) strategy. None of the interventions evaluated their intervention effects using a risk-protective model. From our synthesis regarding the current state of research around resilience-informed interventions, we propose strategies to inform the design of resilience-supportive approaches and make recommendations to move the field forward on how to develop, implement, and measure young SMM's resiliency processes.

Factors Associated With the Intention to Use HIV Preexposure Prophylaxis for Young and Older Men Who Have Sex With Men

BACKGROUND

The uptake of preexposure prophylaxis (PrEP) against HIV is low among young men who have sex with men (MSM) in the Netherlands. Studying the intention to use PrEP among non-PrEP using young and older MSM can guide health authorities in developing new prevention campaigns to optimize PrEP uptake.

METHODS

We investigated the sociodemographic, behavioral, and psychosocial factors associated with a high PrEP use intention in the coming 6 months among 93 young MSM (aged ≤25 years), participating in an online survey, and 290 older MSM (aged ≥26 years), participating in an open, prospective cohort in 2019 to 2020.

RESULTS

Perceiving PrEP as an important prevention tool was associated with a high PrEP use intention among young and older MSM. Among young MSM, a high level of PrEP knowledge and believing that PrEP users take good care of themselves and others were associated with a high PrEP use intention. Among older MSM, 2 or more anal sex partners, chemsex, high HIV risk perception, and believing PrEP increases sexual pleasure were associated with a high PrEP use intention. Believing PrEP leads to adverse effects was associated with a low intention to use PrEP among older MSM.

CONCLUSIONS

To conclude, we showed that both behavioral and psychosocial factors were associated with a high PrEP use intention among young and older MSM. In addition to focusing on sexual behavior and HIV risk, future prevention campaigns and counseling on PrEP could incorporate education, endorsing positive beliefs, and disarming negative beliefs to improve the uptake of PrEP in young and older MSM.

A Network Approach to Determine Optimization of PrEP Uptake in Athens, Greece

Although the HIV epidemic in Athens, Greece has reemerged and spread in men who have sex with men (MSM), state-supported PrEP programs have not been instituted. A PrEP intervention was implemented building upon an existing network cohort of MSM (308 participants; 1212 network members). A PrEP intervention cohort of 106 participants was selected based upon sex behaviors. Individual, partner, and network characteristics were compared between the cohorts. The PrEP cohort members were more highly connected and in more influential positions in the network than their peers. Further, their sexual network connections' behaviors increased their vulnerability to HIV infection relative to the rest of the network's sex partners. This included greater stimulant use (24.2% vs 7.0%; χ² = 28.2; p < 0.001), greater rates of at least weekly condomless sex (OR = 2.7; 95% CI 2.1-3.5; χ² = 59.2; p < 0.001) and at least weekly use of drugs or alcohol during sex (OR = 3.4; 95% CI 2.6-4.3; χ² = 89.7; p < 0.001). Finally the PrEP cohort's social networks showed similarly increased vulnerability to seroconversion, including greater rates of injection drug use (4.1% vs 0.5%; χ² = 3.9; p = 0.04), greater stimulant use (33.6% vs 14.6%; χ² = 16.9, p < 0.001), and higher rates of recent STIs (21.6% vs 13.1%; χ² = 4.4; p = 0.04). Thus, this PrEP intervention engaged individuals in vulnerable positions with vulnerable connections within an MSM community.

Narratives of Change From Gay and Bisexual Men Living With HIV in an Emotional Well-Being Intervention

The emotional burden of an HIV diagnosis can impact HIV outcomes and overall well-being. We piloted a four-session individual-level emotional well-being intervention, offered during HIV care visits, for gay and bisexual men living with HIV in Guatemala City who were recently diagnosed or reengaged in care. To assess intervention impact in a contextualized manner, we conducted longitudinal qualitative interviews (n = 3) with study participants (n = 10) over 12 months. Data analysis included thematic coding using NVivo and longitudinal narrative summaries and matrices to identify narratives of change and assess intervention impact. Participants experienced changes in their view of self and diagnosis perceptions, improved physical and mental health, increased interest in sex and relationships, and a clarification of their life goals. The intervention helped participants reach diagnosis acceptance, improve self-esteem, and gain self-efficacy for managing life with HIV. Findings support the importance of integrating emotional well-being into HIV care.

Perceptions of HIV Research Participation Among Gay, Bisexual, and Other Men who Have Sex with Men and Transgender and Nonbinary Adults: Results From a Midwest Pride Event

Human immunodeficiency virus (HIV) continues to disproportionately affect gay, bisexual, and other men who have sex with men (GBM) and transgender and nonbinary (trans/NB) individuals. This study investigated attitudes toward participation in HIV survey research, guided by Emanuel's framework for ethical clinical research (e.g., risk-benefit ratio, fair participant selection, respect for participants, social value, and collaborative partnership). GBM (n = 294) and trans/NB (n = 86) persons recruited at a Pride event in Milwaukee completed a survey assessing risks and benefits of participation in, and comfort responding to, sexual health surveys. Participants reported few ethical concerns (e.g., privacy and confidentiality), with notable differences by race, sexual orientation and gender identity, and prior research experiences. Implications for HIV research with GBM and trans/NB individuals are discussed.

Design, analysis, and reporting of pilot studies in HIV: a systematic review and methodological study

Background

Pilot studies are essential in determining if a larger study is feasible. This is especially true when targeting populations that experience stigma and may be difficult to include in research, such as people with HIV. We sought to describe how pilot studies have been used to inform HIV clinical trials.

Methods

We conducted a methodological study of pilot studies of interventions in people living with HIV published until November 25, 2020, using Medline, Embase, and Cochrane Controlled Register of Trials (CENTRAL). We extracted data on their nomenclature, primary objective, use of progression criteria, sample size, use of qualitative methods, and other contextual information (region, income, level, type of intervention, study design).

Results

Our search retrieved 10,597 studies, of which 248 were eligible. The number of pilot studies increased steadily over time. We found that 179 studies (72.2%) used the terms “pilot” or “feasibility” in their title, 65.3% tested feasibility as a primary objective, only 2% used progression criteria, 23.9% provided a sample size estimation and only 30.2% used qualitative methods.

Conclusions

Pilot studies are increasingly being used to inform HIV research. However, the titles and objectives are not always consistent with piloting. The design and reporting of pilot studies in HIV could be improved.

Supplementary Information

The online version contains supplementary material available at 10.1186/s40814-021-00934-9.

Sexual Behaviors and Factors Associated with Condomless Sexual Practice in Colombian Men Who Have Sex with Men at High Risk of HIV Transmission

Men who have sex with men (MSM) have a disproportionate burden of HIV infection worldwide. In Colombia, the prevalence of HIV in MSM is ~ 43 times higher than in the general population (17% vs. 0.4%). This study determined the sexual behaviors, HIV serostatus, and associated factors with condomless sexual practice with both regular and casual partners in 92 MSM from Medellín, Colombia. The subjects were recruited through a community-based approach, and the data were collected by a structured survey and in-depth interviews. Participants were classified into three groups according to the number of sexual partners in the last three months, to compare the sociodemographic conditions and sexual behaviors. Univariate analysis was described by absolute and relative frequencies; bivariate analysis and multivariate logistic regression were used to compare the groups and to explore the associated factors with condomless sexual practice. The overall HIV estimated prevalence was 4.3%, while the estimated prevalence for MSM with > 10 sexual partners in the last three months was 14.8%. This last group showed higher average age, higher percentage of subjects who have had sex with people living with HIV, and increased frequency of previous sexually transmitted infections. Having condomless sex with casual partners was associated with the number of sexual partners in the last three months. This study demonstrates that Colombian MSM continue to have a high risk of HIV infection/transmission and reinforce the need to implement adequate prevention programs, PrEP and guarantee access to treatment for people living with HIV.

Process evaluation of a bio-behavioural HIV research combined with prevention among GBMSM in 13 European countries

Comparative European data using Second Generation Surveillance System (SGSS) are scarce among gay, bisexual and other men who have sex with men. This study evaluated the implementation of Sialon II, a bio-behavioural HIV research combined with targeted HIV prevention in 13 European cities conducted in collaboration with community partners. A mixed-methods process evaluation assessed the project's coverage, outputs, quality, challenges and opportunities for improvement. Data collected through structured questionnaire from 71 data collectors from community-based organisations and semi-structured interviews with 17 managers of participating gay venues were analysed. Overall implementation was successful, achieving 4901 valid behavioural questionnaires and obtaining 4716 biological samples. Challenges in conducting bio-behavioural research in gay venues related to strict research protocols and unfavourable characteristics of venues. Formative research, collaboration with community gay venues, and offering HIV prevention emerged as facilitators. Community researchers' training was crucial for fidelity to research protocols, increased trust amongst communities and enabled data collectors to effectively address practical problems in the field. Scientifically sound SGSS with community participation is feasible and allows for including 'hard-to-reach' populations. Prevention benefits include awareness raising, capacity building and sexual health promotion in gay venues. The findings are beneficial for epidemiological research among other HIV key populations.

Sex, Drugs, and Impulse Regulation: A Perspective on Reducing Transmission Risk Behavior and Improving Mental Health Among MSM Living With HIV

Unprotected sexual contact continues to be a main cause of HIV transmission and poses certain key populations at increased risk for HIV infection. One of the populations at high risk are men who have sex with men. A subset of MSM engages in chemsex, whereby consumption of illicit drugs is used to facilitate or enhance sexual activity. This practice can have several negative consequences, such as sexually transmitted infections (including HIV) and mental health problems (including compulsive sexual behavior, addiction, and mood disorders). In this article, we provide our perspective on the current situation that medical professionals dealing with MSM living with HIV often feel empty-handed in how to deal with these behavioral and psychological issues. Close collaboration between somatic and mental health professionals is key to address treatment needs of people living with HIV, regarding the negative consequences of chemsex and their overall quality of life. In this article, we discuss possibilities for psychological treatment, including behavioral skills training to improve impulse control and reduce compulsive sexual behaviors among MSM living with HIV who persistently engage in sexual transmission risk behavior, based on our experience with implementing such an intervention. Important barriers and facilitators for further implementation of behavioral interventions will be discussed. Reduction of HIV transmission risk behavior is needed to achieve the WHO aim to end HIV as a public health threat by 2030. We propose that close collaboration between somatic and mental health professionals and implementation of behavioral interventions for risk populations are key to achieve this goal.

Demographic differences in people living with HIV according to recruitment sources: comparison between health-care systems and social media networks

With the improvement of internet technology in health applications, the utilization of internet and social media as new survey methodologies and recruitment source for research participants have been encouraged, yet evidence of the feasibility in people living with HIV (PLHIV) study is still lacking. We conducted a cross-sectional survey to determine whether there are differences among PLHIV recruited from social media networks and health-care systems using an HIV stigma and discrimination questionnaire. The result revealed that PLHIV recruited from social media networks were younger, more sexually active, and had higher educational status and awareness of the country's HIV rights protection laws than those recruited from hospitals. By contrast, participants recruited from hospitals were more diverse regarding key population compositions, had lived with HIV for a longer duration, had a higher prevalence of concomitant physical disabilities than those recruited from social media networks, and fit Taiwan PLHIV characteristics described by 2016 census from Taiwan Centres for Disease Control. We conclude that sampling bias exists when utilizing social media networks for PLHIV studies.

Dynamic Characteristics and HIV Infection of Men who have Sex with Men from 2011 to 2017 in Yinchuan, Ningxia, China

OBJECTIVES

Ningxia Hui Autonomous Region, an important area for ethnic Hui settlement in Northwest China, is a low HIV prevalence region. However, HIV infection rates among men who have sex with men (MSM) in Ningxia have increased to an alarming level, despite scale-up of control measures in recent years. This study aimed to understand the demographical and sexual behavior dynamics of MSM and to explore the factors associated with HIV infection.

METHODS

Annual cross-sectional surveys were carried out among MSM during 2011~2017 in Yinchuan, the capital city of Ningxia. Information regarding social demographics, sexual behavior and HIV prevention knowledge was collected. Blood samples were taken for HIV, HCV serological and genetic analysis, and syphilis serological analysis. The dynamic trend was analyzed with trend χ2 test and factors associated with HIV infection were identified by multivariate logistic regression analysis.

RESULTS

The study found a decreasing trend for mean age of the MSM population over the study period. MSMs with a college education or higher increased significantly, while the proportions that were in a marriage significantly decreased over the study period. The rate of HIV positive among MSM increased during the study period (p<0.05), however, the rate of recently diagnosed infections decreased from 2012 (p<0.05). Overall, a very high proportion (98%) of MSM had basic knowledge of HIV prevention, however, only approximately 40% of them used condoms consistently during anal sex with male partners. Unprotected anal sex was identified as a risk factor associated with HIV infection, as was syphilis infection. Local residency status and MSM who received intervention and detection services were the factors that decreased HIV infection risk. Sequence analysis identified the HIV-1 CRF55_01B subtype from MSM for the first time in Yinchuan.

CONCLUSION

The reduction of recent HIV diagnoses is an encouraging sign of successful HIV control measures in MSM in Ningxia. The finding that a high proportion of MSM had knowledge of HIV prevention but still conducted unprotected sex highlights the need for further control measures to change unsafe sexual practices among MSM.

Four Decades of Epidemiologic Science on HIV Infection and Disease, and Its Impact on Public Health Practice and Policy for Sexual and Gender Minority Persons

Even at the cusp of the second decade of the new millennia, HIV continues to be a significant public health challenge for sexual and gender minorities (SGM). Men who have sex with men and transgender women, in particular, continue to report higher rates of HIV incidence compared to their heterosexual counterparts, while facing significant barriers to comprehensive sexual healthcare. In Delaware, HIV infection impacts a substantial number of individuals with approximately 14.5 incident cases per 100,000. This ranks Delaware as the 14th highest for HIV incidence among U.S. states. However, the largest healthcare provider in Delaware, Christiana Care Health System, has created many health initiatives to support the health needs of SGM and those living with HIV. The current sustained rate of HIV infection indicates the need for enhanced epidemiologic work to identify HIV cases in subgroups of diverse sexuality and gender identity, collaboration within and across research institution and community organizations, as well as engagement in creative solutions that target the multiple levels of factors contributing to HIV incidence. In addition, it is imperative that local agencies and health organizations continue to support these communities of SGM individuals during the current sociopolitical climate of the national U.S. government.

Molecular epidemiology of HIV-1 infection among men who have sex with men in Taiwan from 2013 to 2015

Men who have sex with men (MSM) is the major risk population of HIV-1 infection in Taiwan, and its surveillance has become critical in HIV-1 prevention. We recruited MSM subjects from 17 high-risk venues and 4 community centers in northern and southern Taiwan for anonymous HIV-1 screening during 2013–2015. Blood samples were obtained for genotyping and phylogenetic analysis, and a questionnaire survey covering demographic variables and social behavior was conducted. In total, 4,675 subjects were enrolled, yielding a HIV-1 prevalence rate of 4.3% (201/4675). Eight risk factors including subjects who did not always use condoms (OR = 1.509, p = 0.0123), those who used oil-based lubricants (OR = 1.413, p = 0.0409), and those who used recreational drugs (OR = 2.182, p = < .0001) had a higher risk of HIV-1 infection. The annual prevalence and incidence of HIV-1 showed a downward trend from 2013 to 2015 (6.56%, 5.97 per 100 person-years in 2013; 4.53%, 3.97 per 100 person-years in 2014; 1.84%, 2.08 per 100 person-years in 2015). Factors such as always using condoms, water-based lubricant use, correct knowledge of lubricating substitutes, and recreational drug use were significantly associated with the trend of incidence. Phylogenetic tree analysis showed that the cross-regional and international interaction of the local MSM population may have facilitated transmission of HIV. This survey of high-risk venues showed decreased prevalence and incidence of HIV-1 infection in Taiwan from 2013 to 2015, and this may be related to changes in behavioral patterns. Moreover, cross-regional interaction and recreational drug use need to be considered in future surveillance.

Incidence of sexually transmitted infections in men who have sex with men and who are at substantial risk of HIV infection - A meta-analysis of data from trials and observational studies of HIV pre-exposure prophylaxis

BACKGROUND

Men who have sex with men (MSM) and who engage in condomless anal intercourse with casual partners are at high risk of acquiring sexually transmitted infections (STIs), but reliable epidemiological data are scarce. Studies on HIV pre-exposure prophylaxis (PrEP) enrol MSM who indicate that they engage in behaviour that puts them at high risk of acquiring HIV. Because they also screen for STIs at regular intervals, these studies may serve as a valuable source to estimate incidence rates of STIs in this subpopulation of MSM.

METHODS

We systematically searched for trials and observational studies of PrEP in MSM that reported data on the incidence of STIs during the study period. Incidence rates were calculated as events per 100 person-years (py) with 95% confidence intervals (CI). Data from individual studies were pooled building subgroups along study types and geography. We performed sensitivity analyses, including data only from studies that met pre-defined quality criteria.

RESULTS

Twenty-four publications on 20 studies were included. The majority of studies reported that sexual behaviour and/or STI incidence remained stable or decreased during the study period. For syphilis, incidence rates ranged from 1.8/100py to 14.9/100py, the pooled estimate was 9.1/100py (95%-CI: 7.7-10.9). Incidence rates for gonorrhoea and chlamydia of any site ranged from 13.3/100py to 43.0/100py and 15.1/100py to 48.5/100py, respectively. Considering only studies that met the criteria for sensitivity analysis yielded pooled estimates of 39.6/100py (95%-CI: 32.9-47.6) and 41.8/100py (95%-CI: 33.9-51.5), respectively. The overall estimate for hepatitis C incidence was 1.3/100py (95%-CI: 1.0-1.8).

CONCLUSIONS

Despite partly heterogeneous results, the data depict high incidence rates of STIs among MSM who engage in higher-risk sexual behaviours such as condomless sex with casual partners. This subpopulation of MSM requires access to STI screening at close intervals. By offering access to structures that provide regular STI monitoring and prompt treatment, PrEP may not only decrease HIV incidence but also have beneficial effects in decreasing the burden of STIs.

Knowledge and use of HIV pre-exposure prophylaxis among men who have sex with men in Berlin - A multicentre, cross-sectional survey

Background

HIV pre-exposure prophylaxis (PrEP) has likely contributed to large decreases in HIV incidence among men who have sex with men (MSM) in several major cities. Berlin has seen a smaller decline, and affordable PrEP has been accessible through formal channels in Germany only since autumn 2017. We aimed to investigate knowledge and use of PrEP among MSM in Berlin, and factors predictive of a desire to use PrEP and history of PrEP use.

Methods

Multicentre, paper-based, self-administered survey of adult MSM whose HIV status was negative or unknown at time of participation. Data were collected from 1 October 2017 to 2 April 2018.

Results

473 of 875 questionnaires were returned (response rate 54.1%; mean age 37.4 years, range 18–79). 90.0% of participants were aware of PrEP and, of these, 48.2% felt well informed about it. Among the 17.2% of participants reporting PrEP use, 59.3% indicated obtaining some or all of it from informal sources. 23.7% of those with no history of PrEP use reported having condomless anal intercourse (CAI) with two or more partners over the past six months. Worries about side effects, cost, not having a doctor who prescribes it, and a lack of information were the most frequently reported barriers to PrEP use. A desire to use PrEP and history of PrEP use were associated in our multivariable model with having multiple CAI partners. A history of PrEP use was associated with having a university degree, one or two parents born outside Germany, or friends living with HIV.

Conclusions

We found high awareness of PrEP among MSM in Berlin, but also a strong need for more education on its pros, cons and proper use. The frequency of informal PrEP use was also high, raising urgent individual and public health concerns. Policy makers need to consider recent calls to improve access to PrEP and PrEP education through regular health services.

Pre-exposure prophylaxis (PrEP) for MSM in low HIV incidence places: should high risk individuals be targeted?

Pre-exposure prophylaxis (PrEP) targeting high-risk men who have sex with men (MSM) has been shown to be a cost-effective HIV control measure. However, the approach could be a challenge in low HIV incidence places with a low proportion of high-risk MSM. To examine the impact of PrEP in such setting in Asia, we developed an epidemic model and conducted cost-effectiveness analysis using empirical multicentre clinical and HIV sequence data from HIV-infected MSM in Hong Kong, in conjunction with behavioural data of local MSM. Without PrEP, the HIV incidence (per 100 person-years) would increase from 1.1 to 1.6 between 2011 and 2021. PrEP could avert 3–63% of total new infections in a five-year period (2017–2021), the variability of which depends on the implementation strategies and combination with test-and-treat. However, under current market drug price in 2016, the incremental cost per quality-adjusted life-year gained (QALYG) of PrEP (USD1583136/QALYG) is almost 3 times higher than test-and-treat intervention alone (USD396874/QALYG). Assuming 93% fall of PrEP drug price and in combination with test-and-treat, putting 30% of MSM on non-targeting PrEP would be more feasible, cost-effective (USD268915/QALYG), and could avert more new infections (40%). PrEP could contribute to HIV epidemic control in a low incidence place.