Ryan Zahn
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View article: Assessing the association of stigma and HIV service and prevention uptake among men who have sex with men and transgender women in South Africa
Assessing the association of stigma and HIV service and prevention uptake among men who have sex with men and transgender women in South Africa Open
HIV prevention for gay, bisexual, and other men who have sex with men (GBMSM) and transgender women (TGW) is critical to reducing health disparities and population HIV prevalence. To understand if different types of stigma impact engagemen…
View article: Video selection and assessment for an app-based HIV prevention messaging intervention: formative research
Video selection and assessment for an app-based HIV prevention messaging intervention: formative research Open
Study results informed a final selection of 12 video messages for inclusion in a randomized controlled trial of M-Cubed. Findings may serve as a guide for researchers who plan to develop HIV prevention interventions that utilize publicly a…
View article: Oral pre-exposure prophylaxis uptake, adherence, and adverse events among South African men who have sex with men and transgender women
Oral pre-exposure prophylaxis uptake, adherence, and adverse events among South African men who have sex with men and transgender women Open
Many MSM and TGW initiated and maintained PrEP, demonstrating that PrEP can be successfully delivered to South African MSM and TGW in diverse programmatic contexts. Biologic adherence measures suggest MSM and TGW may experience challenges …
View article: Behavioral Efficacy of a Sexual Health Mobile App for Men Who Have Sex With Men: Randomized Controlled Trial of Mobile Messaging for Men
Behavioral Efficacy of a Sexual Health Mobile App for Men Who Have Sex With Men: Randomized Controlled Trial of Mobile Messaging for Men Open
Background Gay, bisexual, and other men who have sex with men (GBMSM) face the highest burden of HIV in the United States, and there is a paucity of efficacious mobile health (mHealth) HIV prevention and care interventions tailored specifi…
View article: HIV incidence among men who have sex with men in mainland China: a systematic review protocol
HIV incidence among men who have sex with men in mainland China: a systematic review protocol Open
Background Men who have sex with men (MSM) are disproportionately affected by HIV in China. Globally, younger MSM are at higher risk for incident HIV infections, but there has been substantial variation in the estimates of age-stratified H…
View article: HIV Incidence Among Men Who Have Sex with Men in Mainland China: A Systematic Review Protocol
HIV Incidence Among Men Who Have Sex with Men in Mainland China: A Systematic Review Protocol Open
Background: Men who have sex with men (MSM) are disproportionately affected by HIV in China. Globally, younger MSM has been shown to be at higher risk for incident HIV infections, but there has been substantial variation in the estimates o…
View article: Sexually transmitted infection screening, prevalence and incidence among South African men and transgender women who have sex with men enrolled in a combination HIV prevention cohort study: the Sibanye Methods for Prevention Packages Programme (MP3) project
Sexually transmitted infection screening, prevalence and incidence among South African men and transgender women who have sex with men enrolled in a combination HIV prevention cohort study: the Sibanye Methods for Prevention Packages Programme (MP3) project Open
Introduction Men who have sex with men (MSM) and transgender women (TGW) experience high incidence and prevalence of sexually transmitted infections (STI), and data are needed to understand risk factors for STIs in these populations. The S…
View article: HIV prevalence and incidence in a cohort of South African men and transgender women who have sex with men: the Sibanye Methods for Prevention Packages Programme (MP3) project
HIV prevalence and incidence in a cohort of South African men and transgender women who have sex with men: the Sibanye Methods for Prevention Packages Programme (MP3) project Open
Introduction Men who have sex with men (MSM) and transgender women (TGW) are at increased risk for acquiring HIV, but there are limited HIV incidence data for these key populations in Africa. Understanding HIV prevalence and incidence prov…
View article: HIV Prevention Via Mobile Messaging for Men Who Have Sex With Men (M-Cubed): Protocol for a Randomized Controlled Trial
HIV Prevention Via Mobile Messaging for Men Who Have Sex With Men (M-Cubed): Protocol for a Randomized Controlled Trial Open
Background Men who have sex with men (MSM) continue to be the predominately impacted risk group in the United States HIV epidemic and are a priority group for risk reduction in national strategic goals for HIV prevention. Modeling studies …
View article: Peer-assisted learning after onsite, low-dose, high-frequency training and practice on simulators to prevent and treat postpartum hemorrhage and neonatal asphyxia: A pragmatic trial in 12 districts in Uganda
Peer-assisted learning after onsite, low-dose, high-frequency training and practice on simulators to prevent and treat postpartum hemorrhage and neonatal asphyxia: A pragmatic trial in 12 districts in Uganda Open
An urgent need exists to improve and maintain intrapartum skills of providers in sub-Saharan Africa. Peer-assisted learning may address this need, but few rigorous evaluations have been conducted in real-world settings. A pragmatic, cluste…
View article: Human Rights Violations among Men Who Have Sex with Men in Southern Africa: Comparisons between Legal Contexts
Human Rights Violations among Men Who Have Sex with Men in Southern Africa: Comparisons between Legal Contexts Open
In 1994, South Africa approved a constitution providing freedom from discrimination based on sexual orientation. Other Southern African countries, including Botswana, Malawi, and Namibia, criminalize same-sex behavior. Men who have sex wit…