Reducing intersectional stigma among transgender women in Brazil to promote uptake of HIV testing and PrEP: study protocol for a randomised controlled trial of Manas por Manas.

INTRODUCTION: Globally, transgender ('trans') women experience extreme social and economic marginalisation due to intersectional stigma, defined as the confluence of stigma that results from the intersection of social identities and positions among those who are oppressed multiple times. Among trans women, gender-based stigma intersects with social positions such as engagement in sex work and substance use, as well as race-based stigma to generate a social context of vulnerability and increased risk of HIV acquisition. In Brazil, trans women are the 'most at-risk' group for HIV, with 55 times higher estimated odds of HIV infection than the general population; further, uptake of HIV testing and pre-exposure prophylaxis (PrEP) among trans women is significantly lower than other at-risk groups. Through extensive formative work, we developed Manas por Manas, a multilevel intervention using HIV prevention strategies with demonstrated feasibility and acceptability by trans women in Brazil, to address intersectional stigma and increase engagement in the HIV prevention continuum. METHODS AND ANALYSIS: We are conducting a two-arm randomised wait-list controlled trial of the intervention's efficacy in São Paulo, Brazil, to improve uptake of HIV testing and PrEP among transgender women (N=400). The primary outcomes are changes in HIV testing (self-testing and clinic based), changes in PrEP uptake and changes in PrEP persistence at baseline and follow-up assessment for 12 months at 3-month intervals. ETHICS AND DISSEMINATION: This study was approved by University of California, San Francisco Institutional Review Board (15-17910) and Comissão Nacional de Ética em Pesquisa (Research Ethics National Commission, CAAE: 25215219.8.0000.5479) in Brazil. Participants provided informed consent before enrolment. We are committed to collaboration with National Institutes of Health officials, other researchers, and health and social services communities for rapid dissemination of data and sharing of materials. The results will be published in peer-reviewed academic journals and scientific presentations. TRIAL REGISTRATION NUMBER: NCT03081559.

Correlation between gender-based violence and poor treatment outcomes among transgender women living with HIV in Brazil.

BACKGROUND: Transgender women are disproportionately affected by both HIV and gender-based violence (GBV), defined as physical, sexual, or emotional violence perpetrated against an individual based on their gender identity/expression. While a growing body of evidence demonstrates that GBV leads to poor HIV care and treatment outcomes among cisgender women, less research has examined this association among transgender women. We assessed the impact of lifetime experiences of GBV on subsequent retention in HIV care and laboratory confirmed viral suppression among a sample of transgender women living with HIV (TWH) in Brazil. METHODS: A pilot trial of a peer navigation intervention to improve HIV care and treatment among TWH was conducted in São Paulo, Brazil between 2018 and 2019. TWH were recruited and randomized into the intervention or control arm and participated in a baseline and 9-month follow-up survey and ongoing extraction of clinical visit, prescribing, and laboratory data. Generalized linear model regressions with a Poisson distribution estimated the relative risk (RR) for the association of lifetime physical and sexual violence reported at baseline with treatment outcomes (retention in HIV care and viral suppression) at follow-up, adjusting for baseline sociodemographic characteristics. RESULTS: A total of 113 TWH participated in the study. At baseline, median age was 30 years, and the prevalence of lifetime physical and sexual violence was 62% and 45%, respectively. At follow-up, 58% (n = 66/113) were retained in care and 35% (n = 40/113) had evidence of viral suppression. In adjusted models, lifetime physical violence was non-significantly associated with a 10% reduction in retention in care (aRR: 0.90, 95% CI: 0.67, 1.22) and a 31% reduction in viral suppression (aRR: 0.69; 95% CI: 0.43, 1.11). Lifetime sexual violence was non-significantly associated with a 28% reduction in retention in HIV care (aRR: 0.72, 95% CI: 0.52, 1.00) and significantly associated with a 56% reduction in viral suppression (aRR: 0.44; 95% CI: 0.24, 0.79). CONCLUSION: Our findings are among the first to demonstrate that lifetime experiences with physical and sexual violence are associated with poor HIV outcomes over time among transgender women. Interventions seeking to improve HIV treatment outcomes should assess and address experiences of GBV among this population. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT03525340.

Anticipated Stigma and Social Barriers to Communication Between Transgender Women Newly Diagnosed with HIV and Health Care Providers: A Mediation Analysis.

Purpose: We assessed whether anticipated stigma (i.e., fear of public mistreatment due to gender identity) impacts communication between transgender women (TGW) living with HIV and health care providers. Methods: This is a secondary analysis of baseline data from Trans Amigas, a study conducted in Brazil, 2018. The study population consisted of TGW living with HIV, older than 18 years, residing in the São Paulo metropolitan area. We used multivariable logistic regression (α = 0.05), mediation, and bootstrapping for the analysis. Results: One hundred and thirteen participants completed the study. Fear of public mistreatment had an adjusted odds ratio (aOR) of 7.42 (p = 0.003) for difficulty reporting new symptoms to providers. Concerning fear of public mistreatment, we found that unemployment had an aOR of 3.62 (p = 0.036); sex work, an aOR of 2.95 (p = 0.041); and issues related to name change in documents, an aOR of 2.71 (p = 0.033). For the indirect effect on difficulty reporting new symptoms, mediated by fear of public mistreatment, unemployment had an aOR of 1.52 (confidence interval [CI] = 0.88-2.24); sex work, an aOR of 1.48 (CI = 0.81-2.52); and name change issues, an aOR of 1.47 (CI = 0.96-2.43). Conclusions: Anticipated stigma was associated with communication difficulties between TGW living with HIV and providers. Our data suggest that structural factors associated with anticipated stigma could indirectly impact on difficulty reporting new symptoms. These findings indicate the importance of considering social contexts that intersect with individual experiences when analyzing communication barriers between providers and patients, and the need to strengthen social policies for TGW in Brazil. Clinical Trial Registration number: R34MH112177.

Factors associated with the retention of travestis and transgender women living with HIV in a peer navigation intervention in São Paulo, Brazil. / Fatores associados à retenção de travestis e mulheres trans vivendo com HIV em uma intervenção com navegação de pares em São Paulo, Brasil.

Travestis and transgender women (TrTGW) constitute the groups with the highest HIV prevalence in the world, with higher probability of infection compared with the general population and lower adherence to prevention and treatment strategies than other vulnerable groups. Considering these challenges, this study describes the factors associated with the retention of TrTGW with HIV to the TransAmigas project. Participants were recruited from April 2018 to September 2019 in a public health service in São Paulo, Brazil. A total of 113 TrTGW were randomly assigned to either a peer navigation intervention (75) or a control group (38) and followed up for nine months. To analyze the association between the selected variables and the outcome ("retention at nine months", regardless of contact at three months, defined by the "full completion of the final questionnaire"), bivariate and multivariate logistic regression models were used. Peer contact forms were qualitatively assessed to validate and complement the previous selection of quantitative component variables. Of the 113 participants, 79 (69.9%) participated in the interview after nine months, of which 54 (72%) were from the intervention group and 25 (66%) from the control group. In the final multivariate model, contact at three months (adjusted odds ratio - aOR = 6.15; 95% confidence interval - 95%CI: 2.16-17.51) and higher schooling level (≥ 12 years) (aOR = 3.26; 95%CI: 1.02-10.42) remained associated with the outcome, adjusted by race/skin color, age ≤ 35 years, and HIV serostatus disclosure. Future studies with TrTGW should include contact at regular intervals, with additional efforts aimed at participants with lower schooling level.

Travestis e mulheres trans (TrMT) pertencem aos grupos com mais alta prevalência do HIV no mundo, com maior probabilidade de infecção em relação à população geral e menor adesão a estratégias de prevenção e tratamento do que outros grupos vulneráveis. Considerando esses desafios, descrevemos os fatores associados à retenção de TrMT com HIV no projeto TransAmigas. O recrutamento ocorreu entre abril de 2018 e setembro de 2019, em um serviço público de saúde em São Paulo, Brasil. Foram inscritas 113 TrMT, atribuídas aleatoriamente para uma intervenção com navegadora de pares (75) ou um grupo controle (38) e seguidas durante nove meses. Para analisar a associação entre as variáveis selecionadas e o desfecho ("retenção aos nove meses" independentemente do contato aos três meses, definido pela "resposta completa ao questionário final"), foram empregados modelos de regressão logística bi e multivariados. Uma exploração qualitativa dos formulários de contato de pares foi realizada para validar e complementar a seleção prévia de variáveis do componente quantitativo. Das 113 participantes, 79 (69,9%) responderam à entrevista de nove meses, sendo 54 (72%) do grupo intervenção e 25 (66%) do grupo controle. No modelo multivariado final, o contato aos três meses (odds ratio ajustado - ORa = 6,15; intervalo de 95% de confiança - 95%CI: 2,16-17,51) e a maior escolaridade (≥ 12 anos) (ORa = 3,26; IC95%: 1,02-10,42) permaneceram associados ao desfecho, ajustados por raça/cor, idade < 35 anos e revelação do status sorológico para HIV. Pesquisas futuras com TrMT devem incluir contato em intervalos regulares, com esforços adicionais voltados a participantes com menor escolaridade.

La población de travestis y mujeres trans (TrMT) está en los grupos con mayor prevalencia de VIH en el mundo, con mayor probabilidad de infección en comparación con la población general y menor adherencia a las estrategias de prevención y tratamiento que otros grupos vulnerables. Ante estos desafíos, describimos los factores asociados a la retención de TrMT con VIH en el proyecto TransAmigas. La selección ocurrió entre abril de 2018 y septiembre de 2019, en un servicio público de salud de São Paulo, Brasil. Se inscribieron 113 TrMT, a las cuales se asignaron aleatoriamente a una intervención de navegador de pares (75) o a un grupo control (38) y se les dio seguimiento durante 9 meses. Para analizar la asociación entre las variables seleccionadas y el resultado ("retención a los nueve meses" independientemente del contacto a los 3 meses, definido por "respuesta completa al cuestionario final"), se utilizaron modelos de regresión logística bi- y multivariante. Se realizó una exploración cualitativa de los formularios de contacto de pares para validar y complementar la selección previa de las variables en el componente cuantitativo. De las 113 participantes, 79 (69,9%) respondieron a la entrevista de los 9 meses, de las cuales 54 (72%) pertenecían al grupo intervención y 25 (66%) al grupo control. En el modelo multivariante final, el contacto a los 3 meses (odds ratio ajustado - ORa = 6,15; intervalo de 95% de confianza - IC95%: 2,16-17,51) y un alto nivel de instrucción (≥ 12 años) (ORa = 3,26; IC95%: 1,02-10,42) permanecieron asociados con el resultado, ajustado por etnia/color, edad < 35 años y divulgación del estado serológico respecto al VIH. Los futuros estudios con la población TrMT deberán incluir contacto a intervalos regulares, con esfuerzos adicionales dirigidos a las participantes con menor nivel de instrucción.

Fatores associados à retenção de travestis e mulheres trans vivendo com HIV em uma intervenção com navegação de pares em São Paulo, Brasil / Factores asociados con la retención de travestis y mujeres transgénero que viven con el VIH en una intervención consultada por pares en São Paulo, Brasil / Factors associated with the retention of travestis and transgender women living with HIV in a peer navigation intervention in São Paulo, Brazil

Travestis e mulheres trans (TrMT) pertencem aos grupos com mais alta prevalência do HIV no mundo, com maior probabilidade de infecção em relação à população geral e menor adesão a estratégias de prevenção e tratamento do que outros grupos vulneráveis. Considerando esses desafios, descrevemos os fatores associados à retenção de TrMT com HIV no projeto TransAmigas. O recrutamento ocorreu entre abril de 2018 e setembro de 2019, em um serviço público de saúde em São Paulo, Brasil. Foram inscritas 113 TrMT, atribuídas aleatoriamente para uma intervenção com navegadora de pares (75) ou um grupo controle (38) e seguidas durante nove meses. Para analisar a associação entre as variáveis selecionadas e o desfecho ("retenção aos nove meses" independentemente do contato aos três meses, definido pela "resposta completa ao questionário final"), foram empregados modelos de regressão logística bi e multivariados. Uma exploração qualitativa dos formulários de contato de pares foi realizada para validar e complementar a seleção prévia de variáveis do componente quantitativo. Das 113 participantes, 79 (69,9%) responderam à entrevista de nove meses, sendo 54 (72%) do grupo intervenção e 25 (66%) do grupo controle. No modelo multivariado final, o contato aos três meses (odds ratio ajustado - ORa = 6,15; intervalo de 95% de confiança - 95%CI: 2,16-17,51) e a maior escolaridade (≥ 12 anos) (ORa = 3,26; IC95%: 1,02-10,42) permaneceram associados ao desfecho, ajustados por raça/cor, idade < 35 anos e revelação do status sorológico para HIV. Pesquisas futuras com TrMT devem incluir contato em intervalos regulares, com esforços adicionais voltados a participantes com menor escolaridade.

La población de travestis y mujeres trans (TrMT) está en los grupos con mayor prevalencia de VIH en el mundo, con mayor probabilidad de infección en comparación con la población general y menor adherencia a las estrategias de prevención y tratamiento que otros grupos vulnerables. Ante estos desafíos, describimos los factores asociados a la retención de TrMT con VIH en el proyecto TransAmigas. La selección ocurrió entre abril de 2018 y septiembre de 2019, en un servicio público de salud de São Paulo, Brasil. Se inscribieron 113 TrMT, a las cuales se asignaron aleatoriamente a una intervención de navegador de pares (75) o a un grupo control (38) y se les dio seguimiento durante 9 meses. Para analizar la asociación entre las variables seleccionadas y el resultado ("retención a los nueve meses" independientemente del contacto a los 3 meses, definido por "respuesta completa al cuestionario final"), se utilizaron modelos de regresión logística bi- y multivariante. Se realizó una exploración cualitativa de los formularios de contacto de pares para validar y complementar la selección previa de las variables en el componente cuantitativo. De las 113 participantes, 79 (69,9%) respondieron a la entrevista de los 9 meses, de las cuales 54 (72%) pertenecían al grupo intervención y 25 (66%) al grupo control. En el modelo multivariante final, el contacto a los 3 meses (odds ratio ajustado - ORa = 6,15; intervalo de 95% de confianza - IC95%: 2,16-17,51) y un alto nivel de instrucción (≥ 12 años) (ORa = 3,26; IC95%: 1,02-10,42) permanecieron asociados con el resultado, ajustado por etnia/color, edad < 35 años y divulgación del estado serológico respecto al VIH. Los futuros estudios con la población TrMT deberán incluir contacto a intervalos regulares, con esfuerzos adicionales dirigidos a las participantes con menor nivel de instrucción.

Travestis and transgender women (TrTGW) constitute the groups with the highest HIV prevalence in the world, with higher probability of infection compared with the general population and lower adherence to prevention and treatment strategies than other vulnerable groups. Considering these challenges, this study describes the factors associated with the retention of TrTGW with HIV to the TransAmigas project. Participants were recruited from April 2018 to September 2019 in a public health service in São Paulo, Brazil. A total of 113 TrTGW were randomly assigned to either a peer navigation intervention (75) or a control group (38) and followed up for nine months. To analyze the association between the selected variables and the outcome ("retention at nine months", regardless of contact at three months, defined by the "full completion of the final questionnaire"), bivariate and multivariate logistic regression models were used. Peer contact forms were qualitatively assessed to validate and complement the previous selection of quantitative component variables. Of the 113 participants, 79 (69.9%) participated in the interview after nine months, of which 54 (72%) were from the intervention group and 25 (66%) from the control group. In the final multivariate model, contact at three months (adjusted odds ratio - aOR = 6.15; 95% confidence interval - 95%CI: 2.16-17.51) and higher schooling level (≥ 12 years) (aOR = 3.26; 95%CI: 1.02-10.42) remained associated with the outcome, adjusted by race/skin color, age ≤ 35 years, and HIV serostatus disclosure. Future studies with TrTGW should include contact at regular intervals, with additional efforts aimed at participants with lower schooling level.

Peer Navigation to Support Transgender Women's Engagement in HIV Care: Findings from the Trans Amigas Pilot Trial in São Paulo, Brazil.

Trans women living with HIV (TWH) have suboptimal HIV care engagement. We pilot tested Trans Amigas, a theory-based, trans-specific peer navigation (PN) intervention to address barriers to care in São Paulo, Brazil. TWH were randomized to the PN intervention (n = 75) or control (n = 38) condition. Control participants were referred to trans-friendly HIV care. Intervention participants were assigned a navigator who conducted nine in-person one-on-one sessions and bi-weekly phone or text check-ins to help participants overcome barriers to care and work towards gender affirmation and healthcare goals. We followed participants for 9 months to determine intervention feasibility, acceptability, and preliminary efficacy in improving retention in care. Analyses were intention to treat (ITT). Intervention acceptability was high: at end line, 85.2% of PN participants said they would continue receiving services and 94.4% would recommend peer navigation to a friend. A priori feasibility criteria were met: 92% of eligible participants enrolled and 70% were retained at 9 months; however, only 47% achieved moderate or better adherence to both in-person and phone/text program components. Though the pilot was not powered for efficacy, ITT findings trended toward significance, with intervention participants 40% more likely to be retained in care at the end of the study. Population-specific peer programming to support care engagement is acceptable, feasible, and can improve HIV outcomes for Trans women living with HIV.

RESUMEN: Las mujeres transgénero que viven con VIH (MTV) tienen una participación subóptima en la atención del VIH. Nosotros evaluamos el programa piloto "Trans Amigas", una intervención de navegación (o acompañamiento) de pares (NP) basada en un marco teórico, diseñado específicamente para mujeres transgénero, para abordar las dificultades de acceso a la salud en São Paulo, Brasil. MTV fueron asignadas de manera aleatoria a la intervención (n = 75) o a la condición de control (n = 38). Las participantes del grupo control fueron referidas a una unidad con servicios especializados para MTV. Las participantes en la intervención fueron asignadas a una navegadora, quien realizó nueve sesiones individuales en persona, así como llamadas telefónicas o mensajes de texto cada dos semanas para ayudar a las participantes a superar las barreras de acceso a la atención médica y avanzar hacia sus metas de afirmación de género y de salud. Seguimos a las participantes durante nueve meses para determinar factibilidad, aceptabilidad y eficacia preliminar en la retención en los servicios médicos. Usamos análisis por intención de tratar (AIT). La aceptabilidad de la intervención fue alta: 85.2% de las participantes NP dijeron que les gustaría seguir recibiendo los servicios NP, y 94.4% recomendarían NP a una amiga. El criterio de factibilidad a priori fue alcanzado: 92% de las participantes eligibles se inscribió y el 70% continuó por nueve meses. Sin embargo, solo el 47% alcanzó una adherencia moderada o alta tanto a las visitas en persona como a los mensajes de texto/llamadas telefónicas. Aunque el estudio piloto no tuvo el poder necesario para evaluar eficacia, el AIT reveló una tendencia hacia la significancia de que las participantes de la intervención tuvieran uma retención en la atención médica un 40% mayor. Los programas NP que apoyan el la participación en la atención del VIH, diseñados especificamente para la población, son aceptables, factibles, y pueden mejorar la situación de salud de las mujeres transgénero que viven con VIH.

Optimising HIV programming for transgender women in Brazil.

In Brazil, little data is available to inform HIV prevention programming for travestis and transgender ('trans') women, despite the existence of a social movement that has gained strength in recent years. We conducted formative research in Rio de Janeiro to gather trans women's perspectives on combination HIV prevention approaches. Framing the analysis within the model of gender affirmation, we found that several social and contextual factors inhibited participants' access to HIV prevention and treatment. Experienced and anticipated gender-related discrimination and HIV stigma were linked to the avoidance of HIV testing, health services and HIV status disclosure. Participants recommended HIV prevention interventions which combined socio-structural interventions, such as peer-based empowerment and social support, with biomedical interventions such as pre-exposure prophylaxis (PrEP). Participants expressed a preference for programmes and interventions that emphasised a gender-affirmative approach, promoted autonomy and aimed to reduce stigma and discrimination in public health services.

Acceptability and feasibility of HIV self-testing among men who have sex with men in Peru and Brazil.

HIV self-testing has the potential to increase testing frequency and uptake. This pilot study assessed the feasibility and acceptability of HIV self-testing in a sample of sexually active men who have sex with men (MSM) in Peru and Brazil. Participants were trained to use a whole blood rapid HIV self-test and instructed to use the self-test monthly during this three-month study. Test acceptability was measured with self-reported use of the test at the one-month and three-month study visits, and test feasibility was assessed by direct observation of self-test administration at the final three-month visit. A total of 103 participants (52 in Peru and 51 in Brazil) were enrolled, and 86% completed the three-month study. Nearly all participants reported use of the self-test (97% at one-month and 98% at three-month visit), and all participants correctly interpreted the self-administered test results when observed using the test at the final study visit. HIV self-testing with a blood-based assay was highly acceptable and feasible. HIV self-testing may have the potential to increase testing frequency and to reach high-risk MSM not currently accessing HIV-testing services.

Client and provider perspectives on new HIV prevention tools for MSM in the Americas.

Men who have sex with men (MSM) in the Americas require targeted, combination HIV prevention approaches. We solicited client and provider perspectives on emerging prevention interventions including HIV pre-exposure prophylaxis (PrEP) and HIV self-tests through focus groups and in-depth interviews with 130 MSM and 41 providers across four sites: New York, San Francisco, Lima, and Rio de Janeiro. Among the MSM participants, we identified three prevention typologies: non-condom users, inconsistent condom users, and consistent condom users. Northern and Southern MSM differed in the variety of harm reduction strategies utilized: where U.S. MSM relied on condom use as well as disclosure and seroadaptive behaviors for prevention, condom use without disclosure or serostatus discussions was the norm in South America. Interest in new prevention technologies was shaped by the social context. U.S. MSM preferences differed by typology, such that non-condom users were interested in taking PrEP and using home HIV tests. MSM in Brazil, regardless of typology, were interested in exploring new prevention options. MSM in Peru demonstrated moderate interest but were less comfortable with adopting new strategies. MSM and providers' opinions differed substantially with respect to new prevention options. Across sites, most providers were reticent to engage with new prevention options, though some NGO-based providers were more supportive of exploring new prevention tools. Both clients and providers will need to be engaged in developing integrated prevention strategies for MSM.

Acceptability of self-conducted home-based HIV testing among men who have sex with men in Brazil: data from an on-line survey.

The Brazilian HIV/AIDS epidemic is concentrated among men who have sex with men (MSM), however HIV testing rates among MSM are not commensurate with their risk. Strategies to expand early diagnosis may include use of self-conducted home-based testing kits, which are now available for purchase in the US. In April 2011 we conducted a survey with Brazilian MSM using Facebook to assess HIV testing preferences and acceptability of home-based testing. Among 356 previously tested, HIV-negative MSM, 47% reported a preference for home-based testing, 27% preferred clinic-based testing, and 26% had no preference. Less frequent testers and those who had considered testing but failed to test were more likely to prefer home-based testing. Close to 90% reported that they would use self-test kits; 62% and 54% said they would use home-based testing to make choices about unprotected sex with regular and new partners, respectively. Concerns included difficulty to understand the tests (32%) and receiving results alone (23%). Overall, home-based testing may appeal to MSM and result in increased testing frequency. Research on feasibility and utilization of self-tests in practice is needed.

Over-the-counter human immunodeficiency virus self-test kits: time to explore their use for men who have sex with men in Brazil

Increasing access and frequency of human immunodeficiency virus testing are critical to stemming the epidemic. In Brazil's concentrated epidemic, human immunodeficiency virus prevalence in the men who have sex with men/transgender population far exceeds that in the general population, but testing rates fall below what is needed to ensure early detection and treatment. Over-the-counter human immunodeficiency virus self-testing kits, now available in stores in the U.S., have enormous potential to increase testing access and frequency and to facilitate early detection and treatment. With the advent of human immunodeficiency virus self-testing upon us, it is timely to engage the scientific community, government, and civil society in a dialog around how to best utilize this technology in Brazil. We summarize recent research on over-the-counter testing among men who have sex with men, raise potential questions and challenges to using self-tests, suggest implementation strategies, and outline a research agenda moving forward.

Over-the-counter human immunodeficiency virus self-test kits: time to explore their use for men who have sex with men in Brazil.

Increasing access and frequency of human immunodeficiency virus testing are critical to stemming the epidemic. In Brazil's concentrated epidemic, human immunodeficiency virus prevalence in the men who have sex with men/transgender population far exceeds that in the general population, but testing rates fall below what is needed to ensure early detection and treatment. Over-the-counter human immunodeficiency virus self-testing kits, now available in stores in the U.S., have enormous potential to increase testing access and frequency and to facilitate early detection and treatment. With the advent of human immunodeficiency virus self-testing upon us, it is timely to engage the scientific community, government, and civil society in a dialog around how to best utilize this technology in Brazil. We summarize recent research on over-the-counter testing among men who have sex with men, raise potential questions and challenges to using self-tests, suggest implementation strategies, and outline a research agenda moving forward.

Acceptability of self-conducted home-based HIV testing among men who have sex with men in Brazil: data from an on-line survey / Aceitabilidade da autotestagem domiciliar para o HIV entre homens que fazem sexo com homens no Brasil: dados de uma enquete na Internet / Aceptabilidad del examen de VIH autoadministrado en casa con hombres que practican sexo con hombres en Brasil: datos de una encuesta por internet

The Brazilian HIV/AIDS epidemic is concentrated among men who have sex with men (MSM), however HIV testing rates among MSM are not commensurate with their risk. Strategies to expand early diagnosis may include use of self-conducted home-based testing kits, which are now available for purchase in the US. In April 2011 we conducted a survey with Brazilian MSM using Facebook to assess HIV testing preferences and acceptability of home-based testing. Among 356 previously tested, HIV-negative MSM, 47% reported a preference for home-based testing, 27% preferred clinic-based testing, and 26% had no preference. Less frequent testers and those who had considered testing but failed to test were more likely to prefer home-based testing. Close to 90% reported that they would use self-test kits; 62% and 54% said they would use home-based testing to make choices about unprotected sex with regular and new partners, respectively. Concerns included difficulty to understand the tests (32%) and receiving results alone (23%). Overall, home-based testing may appeal to MSM and result in increased testing frequency. Research on feasibility and utilization of self-tests in practice is needed.

A epidemia de HIV/AIDS no Brasil é concentrada em homens que fazem sexo com homens (HSH), mas suas taxas de testagem são incompatíveis com seus riscos. Estratégias para expandir o diagnóstico precoce entre HSH podem incluir kits de autotestagem em ambiente doméstico (AAD), como os disponíveis para compra nos Estados Unidos. Em abril de 2011, realizamos uma pesquisa com HSH brasileiros recrutados em Facebook para conhecer preferências de testagem e aceitabilidade da AAD. Entre 356 HSH HIV(-) testados previamente, 47% preferiam a AAD, 27% testagem em clínicas e 26% sem preferência. HSH com menos testagem ou que consideraram a testagem sem fazê-la tinham maior probabilidade de preferir a AAD (p < 0,05). Quase 90% usariam a AAD, 62 e 54% para decidir sobre ter sexo desprotegido com parceiros regulares e novos, respectivamente. Dificuldade de entender os testes (32%) e receber os resultados sozinhos (23%) foram preocupações referidas. Testes anti-HIV de AAD podem ser atrativos para HSH e resultar em aumento de testagem. Pesquisas com foco na viabilidade e utilização dos kits AAD na prática são necessárias.

La epidemia de VIH/SIDA en Brasil se concentra en hombres que practican sexo con hombres (HSH), pero los índices de exámenes clínicos para conocer si están infectados son incompatibles con sus riesgos. Las estrategias para expandir el diagnóstico precoz entre HSH pueden incluir kits de autoanálisis para el hogar, como los que están a disposición del público en Estados Unidos. En abril de 2011, realizamos una investigación con HSH brasileños, captados en Facebook, para conocer preferencias de exámenes y la aceptabilidad del autoanálisis en un ambiente doméstico. Entre los 356 HSH VIH(-) analizados previamente, un 47% preferían un autoanálisis en un ambiente doméstico, un 27% pruebas en clínicas y un 26% no tenían preferencias. HSH que menos exámenes se realizaron o quienes los consideraron, pero no se los hicieron, tenían mayor probabilidad de preferir el autoanálisis en un ambiente doméstico. Casi un 90% usarían autoanálisis en su hogar, un 62% y 54% con el fin de decidir sobre tener sexo sin protección con parejas regulares y nuevas, respectivamente. La dificultad de entender los análisis (32%) y recibir los resultados a solas (23%) fueron las preocupaciones a las que se refirieron. Los análisis anti-VIH de autoadministración en el hogar pueden ser atractivos para HSH y resultar en un aumento de exámenes. Las investigaciones centradas en la viabilidad y utilización de los test de autoanálisis en la práctica son necesarias.

Social participation and drug use in a cohort of Brazilian sex workers.

BACKGROUND: Structural interventions focused on community mobilisation to engender an enabling social context have reduced sexual risk behaviours among sex workers. Interventions to date have increased social participation and shown an association between participation and safer sex. Social participation could modify risk for other health behaviours, particularly drug use. We assessed social participation and drug use before and after implementation of a clinical, social and structural intervention with sex workers intended to prevent sexually transmitted infections/HIV infection. METHODS: We followed 420 sex workers participating in the Encontros intervention in Corumbá, Brazil, between 2003 and 2005. We estimated the association of participation in external social groups with drug use at baseline and follow-up using logistic regression and marginal modelling. Follow-up analyses of preintervention/postintervention change in drug use employed inverse probability weighting to account for censoring and were stratified by exposure to the intervention. RESULTS: Social participation showed a protective association with drug use at baseline (1 SD higher level of social participation associated with 3.8% lower prevalence of drug use, 95% CI -0.1 to 8.3). Among individuals exposed to Encontros, higher social participation was associated with an 8.6% lower level of drug use (95% CI 0.1 to 23.3). No significant association was found among the unexposed. CONCLUSIONS: A structural intervention that modified sex workers' social environment, specifically participation in external social groups, was associated with reduced drug use. These findings suggest that sexual risk prevention initiatives that enhance social integration among marginalised populations can produce broad health impacts, including reductions in drug use.

Performance of a rapid self-test for detection of Trichomonas vaginalis in South Africa and Brazil.

Women participating in studies in Brazil (n = 695) and South Africa (n = 230) performed rapid point-of-care tests for Trichomonas vaginalis on self-collected vaginal swabs. Using PCR as the gold standard, rapid self-testing achieved high specificity (99.1%; 95% confidence interval [CI], 98.2 to 99.6%) and moderate sensitivity (76.7%; 95% CI, 61.4 to 88.2%). These tests may be considered an alternative to syndromic management in resource-poor settings.

Findings from Encontros: a multilevel STI/HIV intervention to increase condom use, reduce STI, and change the social environment among sex workers in Brazil.

BACKGROUND: Sexually transmitted infection (STI)/HIV prevention programs, which do not modify social structural contexts that contribute to risk of STI/HIV may fail to bring about improvements in health, particularly among groups who experience discrimination and exclusion from public life. We conducted a multilevel intervention with sex workers, including improved clinical care and community-mobilizing strategies to modify social structural factors that shape sexual behavior, to improve condom use and reduce incident STI. METHODS: We followed 420 sex workers participating in the Encontros intervention in Corumbá, Brazil, between 2003 and 2005. We estimated the effect of the intervention on incident chlamydia and gonorrhea infections and condom use using generalized estimating equations and inverse probability weighting by comparing those who actively engaged in the intervention activities (exposed) with those who were less engaged (unexposed). We also determined the association of participation on reported social cohesion and participation in networks. RESULTS: Exposed participants had significantly higher odds of reporting consistent condom use with regular clients (odds ratio [OR]: 1.9, 95% confidence interval:1.1-3.3) and nonsignificantly increased odds with both new clients (OR: 1.6, 0.9-2.8) and nonpaying partners (OR: 1.5, 0.9-1.5). The odds of an incident STI were nonsignificantly reduced for exposed participants compared with unexposed (OR: 0.46, 0.2-1.3). Participation was significantly associated with increased perceived cohesion and participation in networks. CONCLUSION: This prospective study provides evidence that multilevel interventions with mobilizing strategies to modify aspects of the social environment can improve condom use, reduce STIs, and increase social cohesion and participation in networks among sex workers.

[Early diagnosis and correlations of sexually transmitted infections among women in primary care health services]. / Diagnóstico precoce e os fatores associados às infecções sexualmente transmissíveis em mulheres atendidas na atenção primária.

INTRODUCTION: Sexually Transmitted Infections (STIs) in women remain a public health challenge due to high prevalence, difficulties to implement early diagnosis strategies and high rates of complications. OBJECTIVE: Identify the prevalence of STIs among users of a primary health care clinic in São Paulo. METHODS: Women, 18 to 40 years of age, were invited to self-collect vaginal specimens to be tested for Chlamydia trachomatis, Neisseria gonorrhoeae, and Trichomonas vaginalis by Polymerase Chain Reaction (PCR). Women were also invited to answer a demographic and sexual history questionnaire, either on the computer or face-to-face. RESULTS: The prevalence of STIs obtained from the 781 women included in the study was: Chlamydia trachomatis: 8.4%, Neisseria gonorrhoeae: 1.9%, and Trichomonas vaginalis: 3.2%. Thirteen percent tested positive for at least one out of the three STIs. The variables associated independently with a higher risk of STIs were: age under 20-years-old, more than two lifetime sexual partners, and self-perception of STI risk. The use of condoms as a contraceptive method proved to be a protective factor. CONCLUSION: The high prevalence found among these women indicates the need for the implementation of STI screening strategies in primary care settings in Brazil.

Prevalence and factors associated with HSV-2 and hepatitis B infections among truck drivers crossing the southern Brazilian border.

OBJECTIVES: The authors estimate the prevalence of HIV, syphilis, hepatitis B virus (HBV) and herpes simplex virus type-2 (HSV-2) infection and correlates of HBV and HSV-2 infection among truck drivers crossing the southern Brazilian border at Foz do Iguaçu. METHODS: Between October 2003 and March 2005, 1945 truck drivers were sampled while accessing voluntary counselling and testing services; 1833 (94.2%) were tested for HIV (ELISA and confirmatory immunofluorescence assay) and syphilis (non-treponemal (VDRL) and treponemal tests (FTA-ABS)). From these, 799 stored sera were tested for HSV-2 (type-specific ELISA test for detection of IgG) and HBV (core antibodies (anti-HBc) with positives tested for surface antigen (HBsAg)). The authors estimate HIV, syphilis, HSV-2 and HBV prevalence and determine socio-demographic and behavioural correlates of HSV-2 infection and HBV exposure. RESULTS: HIV prevalence was 0.3% (95% CI 0.1 to 0.6) and syphilis 4.5% (95% CI 3.6 to 5.4). Among those tested for HBV and HSV-2, 32.3% (95% CI 28.9 to 35.6) had serological evidence of exposure to HBV and 26.6% (95% CI 23.5 to 29.7) tested positive for HSV-2. Factors independently associated with HBV exposure included increasing age, Brazilian nationality and unprotected anal sex. Increasing age and reporting an unknown number of lifetime partners were associated with HSV-2 infection. CONCLUSIONS: In this sample of truck drivers in southern Brazil, HIV prevalence was lower than national population estimates; exposure to HBV was higher than population estimates, while per cent positive for HSV-2 was similar to population estimates. The low prevalence of HIV in truck drivers indicates prevention successes; however, future HIV prevention programming should incorporate HBV vaccination and sexually transmitted infection prevention.

Diagnóstico precoce e os fatores associados às infecções sexualmente transmissíveis em mulheres atendidas na atenção primária / Early diagnosis and correlations of sexually transmitted infections among women in primary care health services

INTRODUÇÃO: Infecções Sexualmente Transmissíveis (IST) em mulheres permanecem um desafio para a Saúde Pública: elevada prevalência, dificuldade para implantação de estratégias de diagnóstico precoce e elevada ocorrência de sequelas. OBJETIVO: Identificar a prevalência de IST em usuárias de um serviço de atenção primária à saúde em São Paulo. MÉTODOS: Mulheres de 18 a 40 anos foram convidadas para realizar autocoleta de secreção vaginal para a detecção de Chlamydia trachomatis, Neisseria gonorrhoeae e Trichomonas vaginalis por meio de Reacão em Cadeia da Polimerase (PCR). As mulheres também responderam a um questionário com questões demográficas e relativas à história sexual face a face ou autoaplicado por meio de um computador. RESULTADOS: Das 781 mulheres incluídas no estudo, as prevalências obtidas foram: Chlamydia trachomatis (8,4 por cento), Neisseria gonorrhoeae (1,9 por cento) e Trichomonas vaginalis (3,2 por cento). A positividade para pelo menos uma das três IST foi de 13 por cento. As variáveis associadas independentemente com maior risco de IST foram: idade menor que 20 anos, mais de dois parceiros sexuais na vida e percepção de risco para IST; o uso de preservativo como método contraceptivo foi um fator protetor. CONCLUSÃO: A prevalência encontrada em usuárias indica a necessidade da implantação de estratégias de rastreamento de IST em serviços de atenção primária.

INTRODUCTION: Sexually Transmitted Infections (STIs) in women remain a public health challenge due to high prevalence, difficulties to implement early diagnosis strategies and high rates of complications. OBJECTIVE: Identify the prevalence of STIs among users of a primary health care clinic in São Paulo. METHODS: Women, 18 to 40 years of age, were invited to self-collect vaginal specimens to be tested for Chlamydia trachomatis, Neisseria gonorrhoeae, and Trichomonas vaginalis by Polymerase Chain Reaction (PCR). Women were also invited to answer a demographic and sexual history questionnaire, either on the computer or face-to-face. RESULTS: The prevalence of STIs obtained from the 781 women included in the study was: Chlamydia trachomatis: 8.4 percent, Neisseria gonorrhoeae: 1.9 percent, and Trichomonas vaginalis: 3.2 percent. Thirteen percent tested positive for at least one out of the three STIs. The variables associated independently with a higher risk of STIs were: age under 20-years-old, more than two lifetime sexual partners, and self-perception of STI risk. The use of condoms as a contraceptive method proved to be a protective factor. CONCLUSION: The high prevalence found among these women indicates the need for the implementation of STI screening strategies in primary care settings in Brazil.

Inverse probability weighting in sexually transmitted infection/human immunodeficiency virus prevention research: methods for evaluating social and community interventions.

BACKGROUND: Intervention effects estimated from nonrandomized intervention studies are plagued by biases, yet social or structural intervention studies are rarely randomized. There are underutilized statistical methods available to mitigate biases due to self-selection, missing data, and confounding in longitudinal, observational data permitting estimation of causal effects. We demonstrate the use of Inverse Probability Weighting (IPW) to evaluate the effect of participating in a combined clinical and social sexually transmitted infection/human immunodeficiency virus prevention intervention on reduction of incident chlamydia and gonorrhea infections among sex workers in Brazil. METHODS: We demonstrate the step-by-step use of IPW, including presentation of the theoretical background, data set up, model selection for weighting, application of weights, estimation of effects using varied modeling procedures, and discussion of assumptions for use of IPW. RESULTS: A total of 420 sex workers contributed 840 data points on incident chlamydia and gonorrhea infection. Participators were compared with nonparticipators following application of inverse probability weights to correct for differences in covariate patterns between exposure groups and between those who remained in the intervention and those who were lost-to-follow-up. Estimators using 4 model selection procedures provided estimates of intervention effect between odds ratio 0.43 (95% CI, 0.22- 0.85) and 0.53 (95% CI, 0.26 -1.1). CONCLUSIONS: After correcting for selection bias, loss-to-follow-up, and confounding, our analysis suggests a protective effect of participating in the intervention. Evaluations of behavioral, social, and multilevel interventions to prevent sexually transmitted infection can benefit by introduction of weighting methods such as IPW.