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Background: Latino men who have sex with men (MSM) in San Diego have poor HIV testing and prevention outcomes compared with non-Latino White men. Peer navigation (PN) is a promising evidence-based intervention to reduce disparities but needs tailoring for Latino MSM., Settings: Health centers near the US-Mexico border., Methods: Using the Exploration, Preparation, Implementation, Sustainment Framework, we conducted mixed-methods implementation science study. In phase I, we conducted interviews with Latino men (n = 15), focus groups with staff (n = 7), and surveys with all to understand the Exploration, Preparation, Implementation, Sustainment factors associated with HIV testing and care linkage. In phase II, we conducted 31 web-based surveys with Latino men and staff to rank intervention and implementation strategies from phase I. Quantitative data were analyzed descriptively, integrated with qualitative data, and reviewed by our community-academic partnership to develop an implementation model., Results: Latino men (N = 15) were 94% Spanish speaking, 67% gay identified, 27% US born, and their suggestions were to have navigators use peer referral to address barriers such as stigma; use the Latino social network to expand reach, leverage social media for peer-led intervention, and disseminate HIV information. Staff (N = 26) were 77% Spanish speaking, 35% gay-identified, 96% trained in cultural competency, and suggested including culturally appropriate HIV educational materials in Spanish, status and identity neutral programs, administrative/supervisorial/training structure for PNs, and PN compensation and team integration. Overall, results emphasized a need for a formalized PN model centered on referrals and using existing Latino community social networks., Conclusions: Findings can be packaged for future implementation of PN programs for Latino MSM., Competing Interests: The authors have no conflicts of interest to disclose., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)

Adolescent girls who report intimate partner violence (IPV) are at an increased risk of experiencing reproductive coercion (RC); both these forms of gender-based violence (GBV) are associated with unintended pregnancy. Yet little is known about these experiences among adolescent girls in Mexico. Qualitative data were collected as part of formative research for the adaptation of an evidence-based intervention to address RC and IPV in community health centers in Tijuana, Mexico. From September, 2017 to January, 2018, adolescent girls aged 16 to 20 years old ( n = 20) seeking voluntary family planning (FP) services were identified and recruited from two publicly funded community health centers. We conducted semi-structured, in-depth interviews and analyzed the transcripts using inductive and deductive techniques. Participants in this sample commonly described experiencing IPV and RC (including pregnancy coercion and contraceptive sabotage), which many girls reported resulted in unintended pregnancy. Further, participants' narratives and general lack of knowledge on how to cope with IPV or RC illuminated the acceptability of offering GBV prevention intervention within FP clinics serving this population. Findings highlight an urgent need to prevent IPV and RC, and reduce risk for unintended pregnancy among adolescent girls in this region and the potential of FP clinics to serve as a safe space for intervention delivery. Findings contribute to the limited qualitative evidence from Mexico, describing adolescent girl's experiences of IPV and RC, strategies for preventing pregnancy in the context of RC, and opportunities for support from FP providers.

Background: North Tijuana, Mexico is home to many individuals at high risk for transmitting and acquiring human immunodeficiency virus (HIV). Recently, policy shifts by local government impacted how these individuals were handled by authorities. Here we examined how this affected regional HIV transmission dynamics., Methods: HIV pol sequences and associated demographic information were collected from 8 research studies enrolling persons in Tijuana and were used to infer viral transmission patterns. To evaluate the impact of recent policy changes on HIV transmission dynamics, qualitative interviews were performed on a subset of recently infected individuals., Results: Between 2004 and 2016, 288 unique HIV pol sequences were obtained from individuals in Tijuana, including 46.4% from men who have sex with men, 42.1% from individuals reporting transactional sex, and 27.8% from persons who inject drugs (some individuals had >1 risk factor). Forty-two percent of sequences linked to at least 1 other sequence, forming 37 transmission clusters. Thirty-two individuals seroconverted during the observation period, including 8 between April and July 2016. Three of these individuals were putatively linked together. Qualitative interviews suggested changes in policing led individuals to shift locations of residence and injection drug use, leading to increased risk taking (eg, sharing needles)., Conclusions: Near real-time molecular epidemiologic analyses identified a cluster of linked transmissions temporally associated with policy shifts. Interviews suggested these shifts may have led to increased risk taking among individuals at high risk for HIV acquisition. With all public policy shifts, downstream impacts need to be carefully considered, as even well-intentioned policies can have major public health consequences., (© The Author 2017. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.)

This study examines the prevalence of miscarriage/stillbirth among female sex workers who inject drugs (FSW-IDUs) and measures its associations with physical and sexual violence. Baseline data from 582 FSW-IDUs enrolled in an HIV intervention study in Tijuana and Ciudad Juárez, Mexico were used for current analyses. 30% of participants had experienced at least one miscarriage/stillbirth, 51% had experienced sexual violence, and 49% had experienced physical violence. History of miscarriage/stillbirth was associated with sexual violence (adjusted odds ratio [aOR] = 1.7, p = .02) but not physical violence. Additional reproductive risks associated with miscarriage/stillbirth included high numbers of male clients in the previous month (aOR = 1.1 per 30 clients, p = 0.04), history of abortion (aOR = 3.7, p < .001), and higher number of pregnancies (aOR = 1.4 per additional pregnancy, p < .001). Programs and research with this population should integrate reproductive health and consider gender-based violence.

Female sex workers (FSWs) may benefit from pre-exposure prophylaxis (PrEP) including microbicides for HIV prevention. Since adherence is a key factor in PrEP efficacy, we explored microbicide acceptability and potential barriers to use within FSWs' intimate relationships in Tijuana and Ciudad Juárez, Mexico, where HIV prevalence is increasing. FSWs and their verified intimate (non-commercial) male partners completed quantitative and qualitative interviews from 2010 to 2012. Our complementary mixed methods design followed an iterative process to assess microbicide acceptability, explore related relationship dynamics and identify factors associated with concern about male partners' anger regarding microbicide use. Among 185 couples (n=370 individuals), interest in microbicides was high. In qualitative interviews with 28 couples, most participants were enthusiastic about microbicides for sex work contexts but some explained that microbicides could imply mistrust/infidelity within their intimate relationships. In the overall sample, nearly one in six participants (16%) worried that male partners would become angry about microbicides, which was associated with higher self-esteem among FSWs and lower self-esteem and past year conflicts causing injury within relationships among men. HIV prevention interventions should consider intimate relationship dynamics posing potential barriers to PrEP acceptability and adherence, involve male partners and promote risk communication skills.