Search Results (12)

Background/Objectives: Syphilis, a re-emerging global public health issue, has shown increasing incidence over the past decade, particularly among key populations such as men who have sex with men (MSM), people living with HIV, and pregnant women. This narrative review aimed to synthesize global epidemiological trends of syphilis from 2015 to 2025, with a focus on surveillance gaps, regional disparities, and structural determinants. Methods: A broad narrative approach was used to collect and analyze epidemiological data from 2015 to 2025. The literature was retrieved from databases (PubMed, Scopus) and official reports from the WHO, CDC, and ECDC. Included materials span observational studies, surveillance reports, and modeling data relevant to global trends and public health responses. Results: Globally, syphilis incidence has increased, with notable surges in North America, Europe, and Asia. MSM remain disproportionately affected, while congenital syphilis is resurging even in high-income countries. Low- and middle-income countries report persistent burdens, especially among women of reproductive age, often exacerbated by limited screening and surveillance infrastructure. The COVID-19 pandemic disrupted syphilis-related services and further exacerbated underreporting, hindering timely detection and response efforts. Surveillance systems vary widely in their completeness and quality, which significantly hinders global data comparability and coordinated public health responses. Conclusions: Despite its curability, syphilis continues to spread due to fragmented prevention strategies, inequities in access to care, and insufficient surveillance. Strengthening diagnostic access, integrating prevention efforts into broader health systems, and addressing social determinants are essential. Improved surveillance, equitable access, and innovation—including diagnostics and potential vaccine research—are critical to controlling the global syphilis epidemic. Full article

Background: Men who have sex with men (MSM) in Japan, and globally, face disparities in mental health and well-being, driven by stigma, exclusion, and minority stress. While social capital is known to enhance well-being, no previous research has examined the distinct roles of gay versus heterosexual social capital in relation to subjective happiness. Methods: We conducted a cross-sectional online survey of 1564 MSM in Greater Tokyo, using geosocial networking applications. Social capital was measured using an adapted Resource Generator to assess access to resources from MSM and heterosexual network members. Subjective happiness was assessed using the Japanese version of the Subjective Happiness Scale. Multivariable linear regression identified correlates of happiness. Results: Gay social capital was the strongest predictor of subjective happiness, exceeding the effects of self-rated health, education, employment, and age. High levels of heterosexual social capital were also associated with greater happiness but to a lesser extent. Unemployment, poor health, and attendance at gay cruising venues were negatively associated with happiness. Conclusions: These findings provide the first global evidence of the differential associations between gay and heterosexual social capital on subjective happiness. Community-based interventions that affirm identity and build peer connection may substantially improve well-being among MSM in Japan. Full article

Human Papillomavirus (HPV) infection poses a significant health risk, particularly for high-risk groups such as men who have sex with men (MSM), people living with HIV (PLHIV), and transgender individuals. Despite the availability of effective vaccines, uptake among these groups remains suboptimal due to various social and behavioral barriers (BeSD). A cross-sectional survey was conducted at the Sexually Transmitted Infections (STIs) clinic in Bologna, Italy, from 8 April to 12 April 2024 using a paper questionnaire, investigating HPV vaccine uptake and BeSD factors influencing vaccination decisions. Statistical analyses included descriptive statistics and multivariate logistic regression. Among the 236 respondents, PLHIV and transgender individuals demonstrated lower uptake rates (60.0% and 15.6%) if compared to women under 30 years old (72.7%). Concern about HPV infection varied significantly across groups, with MSM showing the highest worry (48.7%). Perceptions of vaccine safety and access were mixed, influencing vaccination decisions. Multivariate analysis indicated that age inversely correlated with infection worry (OR: 0.94, 95% CI: 0.91–0.98), while being a woman under 30 (OR: 164.0, 95% CI: 17.2–1560.18) or MSM (OR: 3.53, 95% CI: 1.37–9.11) was positively associated with vaccine uptake. The study identifies disparities in HPV vaccine uptake among STI clinic users in Bologna, Italy, emphasizing the need for targeted public health campaigns. These campaigns could engage STI clinics and address awareness, safety perceptions, and access barriers to enhance vaccination coverage among sexual and gender minorities. Full article

Men who have sex with men (MSM) are significantly more likely to report poor health compared to the general population in Japan and internationally. Social capital has been observed as an important component of positive health and well-being outcomes among MSM. However, there is limited research investigating how alter sexuality (possessors of actual resources embedded in social capital networks) mitigates health outcomes. In an online survey of 1564 MSM in Japan, we investigated social correlates of poor self-rated health among MSM, including MSM and heterosexual social networks. Multiple logistic regression revealed that poor health was associated with older age, lower education, and part-time and unemployment. Poor health was inversely correlated with bisexual behavior and high MSM or heterosexual social capital. In order to decrease health disparities among MSM in Japan, interventions focusing on increasing social capital among deprived groups, such as those with lower socio-economic status, older MSM, and those whose sex partners are exclusively male, may be effective. Full article

In the landscape of healthcare disparities and the marginalized status of men who have sex with men (MSM) in Malaysia, understanding the dynamics surrounding HPV vaccination is of paramount importance. The purpose of this study is to examine the knowledge and attitudes of MSM regarding HPV vaccination and to identify factors that may hinder or facilitate its uptake. The findings will contribute to the development of targeted interventions to promote HPV vaccination and reduce the burden of HPV-related health issues among Malaysian MSM. Between May 2019 and September 2022, an online cross-sectional survey was conducted to collect data through popular social media platforms targeting MSM in Malaysia. A multivariable logistic regression model was employed to investigate the associations between HPV vaccination intention and various influencing factors. Out of the total 411 respondents in the study, 266 (60.3%) indicated an intent to receive the HPV vaccination, falling under the categories of “certain to happen”, “very likely”, and “likely”. The average knowledge score for participants was 6.82 (SD = 3.93, range 0–13) out of a total possible score of 13. In the multivariate logistic model, participants who identified themselves as bisexual (OR 6.93, 95% CI 2.35–20.41) and gay/homosexual (OR 4.36, 95% CI 1.66–11.42) showed a greater inclination to receive the HPV vaccine compared to heterosexual participants. High intent to be vaccinated for HPV infection was positively and significantly associated with a high level of knowledge (OR 1.79, 95% CI 1.09–2.95). In the multivariable model, there was no significant association between all variables of attitudes towards HPV infection and HPV vaccinations and the intention to receive HPV vaccination. Study participants reported a low level of susceptibility to HPV infection despite their perception that HPV infection is severe. Two-thirds of participants expected to encounter stigma in healthcare settings during future implementation of HPV vaccination programs. This study underscores the importance of improving HPV vaccine acceptance among Malaysian MSM due to the moderate acceptance level observed. In Malaysia, promoting HPV awareness, enhancing risk perception, and addressing stigma and sensitivity surrounding HPV vaccination may be beneficial in increasing the vaccination willingness among MSM. Full article

Since the beginning of the HIV/AIDS epidemic, gay, bisexual, and other men who have sex with men (gbMSM) have been disproportionately impacted by HIV/AIDS health disparities. Research showed that resilience to HIV/AIDS is associated with increased use of relevant health services, lower sexual health risks, and improved mental health outcomes among racially and ethnically diverse gbMSM. As the subpopulation that has historically been impacted by HIV/AIDS the longest, older gbMSM living with HIV/AIDS have inarguably exhibited resilience to HIV/AIDS the most. The qualitative study described in this paper sought to identify and examine protective factors that fostered resilience to HIV/AIDS based on the insights and lived experiences of racially and ethnically diverse, older gbMSM. Applying a community-based participatory research approach that included the meaningful involvement of older gbMSM living with HIV/AIDS in different roles (i.e., advisory committee member, collaborator, peer researcher, and participant), the study recruited and included forty-one older gbMSM living with HIV/AIDS from Ontario, Canada, in confidential, semi-structured interviews. Utilizing thematic analysis, we identified three major themes from the participant interviews as factors that fostered the resilience of older gbMSM to HIV/AIDS and helped to address HIV/AIDS health disparities: (1) established protective factors, (2) behavioral protective factors, and (3) controversial protective factors. This paper argues for the importance of valuing and capitalizing on these protective factors in the conceptualization and development of interventions, services, and programs that are dedicated to fostering resilience to HIV/AIDS. Full article

Globally, women represent more than half the people living with HIV. This proportion varies by country, with an over-representation of HIV among men who have sex with men (MSM) in some regions. For example, in Australia, MSM account for over 60% of transmissions, with heterosexual sex accounting for almost a quarter of transmissions. Irrespective of geographic region, there is evidence that women can have a different lived experience of HIV due to their unequal social and economic status in society, while MSM can have a different lived experience depending on the laws and customs of their geographic location. Gender differences related to risk factors, stigma, access to services, mental health, health-related quality of life and economic consequences have been consistently reported globally. This paper explores the subjective lived experience of gender and sexuality disparities among three individuals living with HIV in Australia: a male who identified as gay, and a male and female who each identified as heterosexual. Analysis of themes from these three case reports indicated discernible differences by gender and sexuality in four areas: access to medical services, social support, stigma and mental health. It is argued that knowledge and understanding of potential gender and sexuality disparities must be factored into supportive interventions for people living with HIV in Australia. Full article

Immediate antiretroviral therapy (iART), defined as same-day initiation of ART or as soon as possible after diagnosis, has recently been recommended by global and national clinical care guidelines for patients newly diagnosed with human immunodeficiency virus (HIV). Based on San Francisco’s Rapid ART Program Initiative for HIV Diagnoses (RAPID) model, most iART programs in the US condense ART initiation, insurance acquisition, housing assessment, and mental health and substance use evaluation into an initial visit. However, the RAPID model does not explicitly address structural racism and homophobia, HIV-related stigma, medical mistrust, and other important factors at the time of diagnosis experienced more poignantly by African American, Latinx, men who have sex with men (MSM), and transgender patient populations. These factors negatively impact initial and subsequent HIV care engagement and exacerbate significant health disparities along the HIV care continuum. While iART has improved time to viral suppression and linkage to care rates, its association with retention in care and viral suppression, particularly in vulnerable populations, remains controversial. Considering that in the US the HIV epidemic is sharply defined by healthcare disparities, we argue that incorporating an explicit health equity approach into the RAPID model is vital to ensure those who disproportionately bear the burden of HIV are not left behind. Full article

While earlier studies on men having sex with men (MSM) tended to examine infection-related cancers, an increasing number of studies have been focusing on effects of sexual orientation on other cancers and social and cultural causes for cancer disparities. As a type of tertiary research, this umbrella review (UR) aims to synthesize findings from existing review studies on the effects of sexual orientation on cancer. Relevant peer-reviewed systematic reviews (SRs) will be identified without date or language restrictions using MEDLINE, Cochrane Database of Systematic Reviews, and the International Prospective Register for Systematic Reviews, among others. The research team members will prepare the data extraction forms. Two reviewers will independently assess extracted SRs using the Assessment of Methodological Quality of Systematic Reviews. A third reviewer will weigh in to resolve discrepancies. The reviewers will be blinded to publisher, journal, and authors, making their judgements on the title, year, and abstract. The Preferred Reporting Items for Systematic Reviews and Meta-analysis checklist will guide data synthesis. By collating evidence from multiple reviews into one accessible and usable document, our first UR on global epidemiology of malignancies among MSM would serve as an evidence-based decision-making tool for the public health community. Full article

Background: In many parts of the world, stark racial disparities in human immunodeficiency virus (HIV) prevalence, incidence, prevention, and care outcomes persist among gay, bisexual, and other men who have sex with men (MSM), with Black MSM significantly impacted in the United States (U.S.). Individual-level characteristics, including sexual behaviors and socioeconomic status, do not fully account for racial/ethnic disparities in HIV among MSM. We hypothesize that neighborhood contexts and network characteristics influence risk for HIV infection as well as HIV-related prevention and care behaviors. As such, the study design includes the use of real-time geospatial methods and in-depth assessments of multiple network typologies to investigate the impact of neighborhood and network-level factors on HIV prevention and treatment among Black MSM residing in longstanding priority HIV elimination areas in the U.S., namely Chicago, Illinois and in the Deep South (Jackson, Mississippi and New Orleans, Louisiana) (n = 450, n = 50, and n = 100, respectively). We describe the design, sampling methods, data collection, data management methods, and preliminary findings of the ongoing ‘Neighborhoods and Networks (N2) Cohort Study’. Methods/Design: N2 employs a prospective longitudinal design. The sample includes Black MSM participants in Chicago recruited via respondent-driven sampling and assessed every six months over two years of follow-up. Participants enrolled in Jackson and New Orleans are being recruited through existing health and community services and assessed every six months over one year of follow-up. Mobility within and between neighborhoods is being assessed using global positioning system (GPS) technology. Social and sexual networks among Black MSM are being studied through egocentric network inventories as well as newer methods of creating meso-level networks that involve social media (Facebook) and mobile phone contacts. Key HIV prevention outcomes such as pre-exposure prophylaxis (PrEP) care engagement, and HIV/STI (sexually transmitted infections) biomarkers will be examined at baseline and follow-up. Results: As of 31 December 2018, a total of 361 men were enrolled across all study sites: 259 in Chicago and 102 in the Deep South (75 in New Orleans and 27 in Jackson). At baseline, participants ranged in age from 17 to 65 years old (mean = 34.3, standard deviation = 5.1) with 123 men (34.1%) self-reported as HIV positive. While HIV treatment levels were similar between sites, men in the Deep South reported higher rates of adherence than men in Chicago (63.3% versus 49.4%, p = 0.03). Sexual risk profiles were mainly the same between men from different study sites, with 22.9% of men in Chicago and 28.9% in the Deep South reporting consistent condom use during vaginal and anal sex (p = 0.26). Regarding their home neighborhoods, men in the Deep South were more likely than those in Chicago to characterize theirs as having a good reputation (43.1% versus 24.7%, p < 0.001) and as being safe (37.3% versus 21.2%, p = 0.002). Conclusions: The focus on Black MSM in the N2 Study will allow for a nuanced exploration of the attitudes, beliefs, behaviors, and practices of a diverse group of Black MSM. The study is also positioned to provide novel insight about neighborhood and network characteristics that influence HIV-related behaviors. A health equity framework ensures that Black MSM are not explicitly or implicitly deemed as deviant, disordered, or the non-reference group. Findings from N2 will provide guidance for the implementation of more impactful HIV prevention interventions that engage a diverse population of Black MSM as we work toward HIV elimination in the U.S. Full article

A cross-national study of young adult sexual minorities was conducted in order to explore the associations between sexual orientation and measures of depression, suicidality, and substance use. Two nationally representative data sets were explored from the United States (N = 14,335) and Norway (N = 2423). Results indicated that sexual minorities experienced multiple health disparities (depression, suicidality, and substance use) compared to their heterosexual counterparts. We found similar patterns of depression, suicidality, and substance use for sexual minorities in both the United States and Norway. The highest odds of substance use were among heterosexual-identified Norwegian youth who reported same-sex sexual activity, and the highest odds of suicidality were found for bisexual young adults in Norway. These findings have implications for how we consider culture and social policy as barriers and/or opportunities for sexual minorities. Full article

Background: HIV testing continues to be a major priority for addressing the epidemic among young Black men who have sex with men (BMSM). Methods: This study explored barriers to HIV testing uptake, and recommendations for motivating HIV testing uptake among Black men who have sex with men (BMSM) aged 18 to 30. BMSM (N = 36) were recruited through flyers and social media for six focus groups. Results: From the perspectives and experiences of young BMSM, participants recommended that information be included in HIV testing messages that would help young BMSM do self HIV-risk appraisals. Particularly, participants recommended that more knowledge about Pre-Exposure Prophylaxis (PrEP) and the role of PrEP in safer-sex practices be provided. This information is important to help those untested, or who infrequently test, better understand their risk and need for testing. Likewise, participants recommended that more information about a person being undetectable and the risk of condomless sex with an HIV negative sex partner; this information will be helpful for both the HIV negative and HIV positive sex partner for making safer sex decisions. Participants also recommended that interventions should focus on more than drug use as risk; the risk posed by the use of alcohol before and during sex deserves attention among young BMSM. Conclusions: These findings may inform new HIV testing interventions being tailored for young BMSM. The interventions should also consider revisiting street-based peer-outreach approaches for those young BMSM with limited access to social media campaigns due to limited access or infrequent use of social media. Full article