RÉSUMÉ
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.
Sujet(s)
Infections à VIH , Personnes transgenres , Humains , Mâle , Femelle , Infections à VIH/épidémiologie , Analyse de médiation , Identité de genre , Brésil , Homosexualité masculine , Stigmate social , Communication , Personnel de santéRÉSUMÉ
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.
Sujet(s)
Infections à VIH , Personnes transgenres , Adulte , Femelle , Humains , Brésil/épidémiologie , Infections à VIH/épidémiologie , Infections à VIH/prévention et contrôle , Prévalence , Enquêtes et questionnairesRÉSUMÉ
BACKGROUND: The COVID-19 pandemic had a major impact on the mental health of healthcare workers (HCWs), especially in low and middle-income countries, which had to face additional political, social, and economic challenges. We thus aimed to assess the prevalence of mental health outcomes and the associated factors in HCWs treating COVID-19 patients in one of the most affected regions in Brazil. METHODS: We used the Respondent-Driven Sampling method to assess the risks of COVID-19 infection and symptoms of mental disorders in nurses, nursing technicians, and physicians who worked on the frontline in the metropolitan region of Recife. 865 healthcare workers completed a survey regarding sociodemographic data, work-related risks, and symptoms of mental disorders - SRQ-20 for common mental disorders (CMD); AUDIT-C for problematic alcohol use; GAD-7 for anxiety; PHQ-9 for depression; PCL-5 for post-traumatic stress disorder (PTSD). Gile's successive sampling estimator was used to produce the weighted estimates by professional category. A Poisson regression model with robust variance was used to analyze factors associated with a positive screening for CMD. We will present the results of a cross-sectional analysis of the mental health outcomes after the first peak of COVID-19 - from August 2020 to February 2021. RESULTS: The prevalence ratios for a positive screening for CMD were 34.9% (95% CI: 27.8-41.9) in nurses, 28.6% (95% CI: 21.3-36.0) in physicians, and 26.6% (95% CI: 16.8-36.5) in nursing technicians. Nurses presented a higher prevalence of depressive symptoms (23%). Positive screening for problematic alcohol use (10.5 to14.0%), anxiety (10.4 to 13.3%), and PTSD (3.3 to 4.4%) were similar between the professional categories. The main factors associated with CMD in nurses and physicians were related to an intrinsic susceptibility to mental illness, such as previous or family history of psychiatric disorder, and female sex. Among nurse technicians, work-related factors, such as accidents with biological material, presented the strongest association with CMD. CONCLUSION: The mental health of HCWs fighting COVID-19 in Recife was severely affected. It is crucial that healthcare services provide adequate working conditions and psychological support, investing in programs to promote and protect HCWs mental health.
Sujet(s)
COVID-19 , Personnel de santé , Troubles mentaux , Pandémies , Femelle , Humains , Anxiété/épidémiologie , Brésil/épidémiologie , COVID-19/épidémiologie , COVID-19/psychologie , COVID-19/thérapie , Études transversales , Dépression/épidémiologie , Personnel de santé/psychologie , Personnel de santé/statistiques et données numériques , Troubles de stress post-traumatique/épidémiologie , Troubles mentaux/épidémiologie , Mâle , Adulte , Enquêtes et questionnairesRÉSUMÉ
We aimed to analyze the factors associated with inconsistent condom use among men who have sex with men (MSM) and their commercial sexual partners in Brazil. This is a cross-sectional study with adult MSM who were recruited via respondent-driven sampling (RDS) in 12 Brazilian capitals in 2016. MSM answered a sociobehavioral questionnaire which included questions on their sexual behavior. The inconsistent use of condoms with their clientele was measured via insertive and receptive anal sex in the six months prior to our research and in their last sexual intercourse. The association between independent variables and the inconsistent use of condoms was measured via a Poisson regression model with robust variance and estimation of adjusted prevalence ratios (aPR). Data from 461 MSM were analyzed. We found a 26% prevalence of inconsistent condom use with their clientele (95%CI: 19.0-34.3, n = 123). Belonging to the lowest economic classes (D/E), having medium or low knowledge about HIV, having practiced insertive and receptive anal sex, and having never tested for HIV throughout their lives were associated with inconsistent use of condoms with their clientele. The variables associated with inconsistent use indicated that commercial sex is practiced in a context of greater vulnerability to HIV infection, referring to the need for biomedical and behavioral interventions which focus on access to and use of prevention strategies together with public policies to reduce socioeconomic inequalities among MSM who practice commercial sexual.
O objetivo foi analisar os fatores associados ao uso inconsistente de preservativo com parceiros comerciais entre homens que fazem sexo com homens (HSH) no Brasil. Foi feito um estudo transversal, com HSH adultos, recrutados por meio da técnica respondent-driven sampling (RDS), em 12 capitais brasileiras, em 2016. Os HSH responderam a um questionário sociocomportamental, que incluía questões sobre o comportamento sexual. O uso inconsistente de preservativo com parceiros comerciais foi mensurado por meio das relações sexuais anais insertivas e receptivas, ocorridas nos últimos seis meses e na última relação sexual. A associação entre as variáveis independentes e o uso inconsistente de preservativo foi mensurada utilizando o modelo de regressão de Poisson com variância robusta, com estimação de razões de prevalência ajustadas (RPa). Foram analisados dados de 461 HSH. A prevalência de uso inconsistente de preservativo com parceiros comerciais foi de 26% (IC95%: 19,0-34,3, n = 123). Pertencer às classes econômicas mais baixas (D/E), ter médio ou baixo conhecimento sobre HIV, ter praticado sexo anal insertivo e receptivo e nunca ter realizado teste para HIV na vida são fatores que estiveram associados ao uso inconsistente de preservativo com parceiros comerciais. As variáveis associadas ao uso inconsistente indicaram que o sexo comercial está sendo praticado em um contexto de maior vulnerabilidade à infecção pelo HIV. Nesse sentido, são necessárias intervenções biomédicas e comportamentais, com foco no acesso e na utilização de estratégias de prevenção, aliadas a políticas públicas para a redução de desigualdades socioeconômicas entre HSH que praticam sexo comercial.
El objetivo fue analizar los factores asociados al uso inconsistente del preservativo con las parejas comerciales entre los hombres que tienen sexo con hombres (HSH) en Brasil. Estudio transversal, con HSH adultos, reclutados a través de la técnica respondent-driven sampling (RDS), en 12 capitales brasileñas, en 2016. Los HSH respondieron a un cuestionario sociocomportamental que incluía preguntas sobre el comportamiento sexual. El uso inconsistente del preservativo con parejas comerciales se midió por las relaciones anales insertivas y receptivas que se produjeron en los últimos seis meses y por la última relación sexual. La asociación entre las variables independientes y el uso inconsistente del preservativo se midió mediante el modelo de regresión de Poisson con varianza robusta, con estimación de las razones de prevalencia ajustadas (RPa). Se analizaron los datos de 461 HSH. La prevalencia del uso inconsistente del preservativo con las parejas comerciales fue del 26% (IC95%: 19,0-34,3, n = 123). Pertenecer a las clases económicas más bajas (D/E), tener un conocimiento medio o bajo sobre el VIH, haber practicado sexo anal tanto insertivo como receptivo y no haberse sometido nunca a la prueba del VIH en su vida se asociaron con el uso inconsistente del preservativo con las parejas comerciales. Las variables asociadas al uso inconsistente indicaron que el sexo comercial se está practicando en un contexto de mayor vulnerabilidad a la infección por el VIH, refiriendo la necesidad de intervenciones biomédicas y conductuales, con un enfoque en el acceso y uso de estrategias de prevención, junto con políticas públicas para reducir las desigualdades socioeconómicas entre los HSH que practican el sexo comercial.
Sujet(s)
Infections à VIH , Minorités sexuelles , Mâle , Adulte , Humains , Partenaire sexuel , Préservatifs masculins , Homosexualité masculine , Infections à VIH/prévention et contrôle , Infections à VIH/épidémiologie , Brésil , Coït , Prostitution , Études transversales , Comportement sexuelRÉSUMÉ
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.
RÉSUMÉ
Objetivo: Estimar a prevalência do papilomavírus humano (HPV) e avaliar a indicação e completude da vacinação contra o HPV entre travestis e mulheres transexuais (TrMT) em situação de vulnerabilidade social, participantes de estudo transversal multicêntrico (TransOdara), em Manaus, Amazonas (2020-2021). Métodos: O recrutamento ocorreu no Ambulatório de Diversidade Sexual e Gênero da Policlínica Pam/Codajás, utilizando Respondent-Driven Sampling. A variável dependente foi o resultado positivo para HPV, analisado por meio do resultado do swab anal e swab genital. Resultados: Participaram 39 TrMT. Cerca de 50% tinham entre 20 e 29 anos, com até Ensino Fundamental incompleto/completo e 81,6% identificaram-se como pretas/pardas. Um total de 97,4% apresentou infecção anal pelo HPV e 53,8%, infecção genital. As prevalências foram significativamente maiores entre as imigrantes (88,9%) e em situação de rua (72,7%) do que entre as privadas de liberdade (26,3%) (p = 0,003). Conclusão: Para reduzir a alta prevalência de HPV entre TrMT em situação de vulnerabilidade social, é importante aprimorar as políticas públicas vigentes e estabelecer estratégias de prevenção (ampliação da cobertura de imunização/diagnóstico precoce) e tratamento oportuno para melhor qualidade de vida.
Objective: To estimate the prevalence of human papillomavirus (HPV) and evaluate the indication and completeness of vaccination against HPV among 'travestis" and transsexual women (TrTW) in vulnerable social, participants of a multicenter cross-sectional study (TransOdara), in Manaus, Amazonas (2020-2021). Methods: Recruitment took place at the Sexual Diversity and Gender Outpatient Clinic of the Policlínica Pam/Codajás, using Respondent-Driven Sampling. The dependent variable was the positive result for HPV, analyzed through the result of the anal swab and genital swab. Results: 39 participated TrTW. About 50% were between 20 and 29 years old, with incomplete/complete Elementary School and 81.6% identified themselves as black/brown. A total of 97.4% had anal HPV infection and 53.8%, genital infection. Prevalences were significantly higher among immigrants (88.9%) and homeless (72.7%) than among those incarcerated (26.3%) (p = 0.003). Conclusion: To reduce the high prevalence of HPV among TrMT in socially vulnerable situations, it is important to improve current public policies and establish prevention strategies (expansion immunization coverage/early diagnosis) and timely treatment for better quality of life
RÉSUMÉ
A prevalência de HIV em travestis e mulheres transexuais (TrMT) é desproporcionalmente maior quando comparada com a população geral do Brasil. O objetivo deste estudo foi analisar por meio de ensaios molecular e sorológicos convencionais para o diagnóstico da infecção pelo HIV amostras de sangue de uma população TrMT de cinco capitais brasileiras que apresentaram resultado reagente em testes rápidos (TR). Um total de 435 amostras com resultado reagente em pelo menos um TR foi encaminhado ao laboratório de referência do estado de São Paulo o Instituto Adolfo Lutz (IAL) para que fossem analisadas, por meio de testes laboratoriais convencionais. Das amostras avaliadas, 99,3% (432/435) foram reagentes para HIV nos testes laboratoriais convencionais, e destas, 22,7% (98/432) apresentaram carga viral HIV-1 acima de 5.000 cópias/mL e 77,3% (334/432) mostraram-se reagentes em testes sorológicos (imunoensaio de quimioluminescência ou ELISA e imunoblot rápido). As três amostras restantes (0,7%) foram classificadas como "indeterminada para HIV", com base em ensaios molecular e sorológicos convencionais. A sensibilidade analítica dos diferentes ensaios molecular e sorológicos utilizados neste estudo pode ter variado pela influência da imunossupressão viral do HIV-1 resultante da terapia antirretroviral (TARV). Estudos complementares são necessários para melhor entender o impacto da terapia no diagnóstico do HIV
HIV prevalence among travestis and transgender women (TrTW) is disproportionately higher when compared to the overall Brazilian population. The objective of this study was to evaluate, through conventional serological and molecular tests for the diagnosis of HIV infection, blood samples of TrTW residents of five Brazilian capitals with previous reactive HIV point-of-care rapid tests (RT). A total of 435 samples with at least one reactive HIV result on point-of-care tests were sent to the HIV reference laboratory in São Paulo State the Adolfo Lutz Institute for further evaluation by conventional laboratory tests. From total, 432 (99.3%) samples were reactive for HIV infection in conventional laboratory assays, comprising 98/432 (22.7%) with HIV-1 viral load over 5,000 copies/ml, and 334/432 (77.3%) reactive to serological tests (chemiluminescence immunoassay or ELISA, and rapid immunoblotting). The three remaining samples (0.7%) were classified as "indeterminate for HIV" based on conventional serological and molecular assays. Analytical sensitivity of different molecular and serological assays used in this study may have varied due to HIV-1 viral suppression resulting from antiretroviral therapy (ART). Additional studies are needed to better understand the impact of therapy on HIV diagnosis
Sujet(s)
Brésil , Dosage immunologique , Anticorps anti-VIH , Charge virale , Thérapie antirétrovirale hautement active , Personnes transgenres , Tests de diagnostic rapideRÉSUMÉ
Discrimination due to sexual orientation (DDSO) has an important association with health outcomes among men who have sex with men (MSM). This study aimed to analyze factors associated with DDSO among MSM in 12 Brazilian cities. This is a cross-sectional study with 4,176 MSM participants recruited in 2016 which used a respondent-driven sampling method in 12 Brazilian cities. DDSO levels were previously identified by a latent class analysis based on 13 variables from the discrimination section. An ordinal logistic regression was used to assess associations with these DDSO levels, and weighted ordinal odds ratios (OR) and their respective 95% confidence intervals (95%CI) were estimated using Gile's estimator. Most participants were young (< 25 years old) black or of mixed-race (pardo), single individuals who had a religious affiliation, primary or incomplete secondary education, and a high and average socioeconomic status. More than half (65%) reported DDSO in the 12 months prior to this study. We observed an independent association among the four latent DDSO classes and the following variables: age < 25 years old (OR = 1.66; 95%CI: 1.21-2.27), white skin color (OR = 1.43; 95%CI: 1.02-2.01), history of sexual (OR = 2.33; 95%CI: 1.58-3.43) and physical violence (OR = 3.08; 95%CI: 2.11-4.49), disclosure of their sexual orientation as MSM to their fathers (OR = 2.00; 95%CI: 1.47-2.72), experienced suicidal ideation in the two weeks prior to this study (OR = 2.09; 95%CI: 1.46-2.98), and use of any illicit drugs in the last six months (OR = 1.61; 95%CI: 1.19-2.18). Our results indicate that contextual factors may contribute to high DDSO levels among MSM in Brazil. Public health policies toward human rights surveillance and protection among MSM must be urgently addressed.
Sujet(s)
Infections à VIH , Minorités sexuelles , Adulte , Brésil/épidémiologie , Villes , Études transversales , Femelle , Infections à VIH/épidémiologie , Homosexualité masculine , Humains , Mâle , Perception , Comportement sexuelRÉSUMÉ
The SARS-CoV-2 pandemic is a major concern all over the world and, as vaccines became available at the end of 2020, optimal vaccination strategies were subjected to intense investigation. Considering their critical role in reducing disease burden, the increasing demand outpacing production, and that most currently approved vaccines follow a two-dose regimen, the cost-effectiveness of delaying the second dose to increment the coverage of the population receiving the first dose is often debated. Finding the best solution is complex due to the trade-off between vaccinating more people with lower level of protection and guaranteeing higher protection to a fewer number of individuals. Here we present a novel extended age-structured SEIR mathematical model that includes a two-dose vaccination schedule with a between-doses delay modelled through delay differential equations and linear optimization of vaccination rates. By maintaining the minimum stock of vaccines under a given production rate, we evaluate the dose interval that minimizes the number of deaths. We found that the best strategy depends on an interplay between the vaccine production rate and the relative efficacy of the first dose. In the scenario of low first-dose efficacy, it is always better to vaccinate the second dose as soon as possible, while for high first-dose efficacy, the best strategy of time window depends on the production rate and also on second-dose efficacy provided by each type of vaccine. We also found that the rate of spread of the infection does not affect significantly the thresholds of the best window, but is an important factor in the absolute number of total deaths. These conclusions point to the need to carefully take into account both vaccine characteristics and roll-out speed to optimize the outcome of vaccination strategies.
Sujet(s)
COVID-19 , Vaccins , COVID-19/épidémiologie , COVID-19/prévention et contrôle , Vaccins contre la COVID-19 , Humains , SARS-CoV-2 , VaccinationRÉSUMÉ
Discrimination due to sexual orientation (DDSO) has an important association with health outcomes among men who have sex with men (MSM). This study aimed to analyze factors associated with DDSO among MSM in 12 Brazilian cities. This is a cross-sectional study with 4,176 MSM participants recruited in 2016 which used a respondent-driven sampling method in 12 Brazilian cities. DDSO levels were previously identified by a latent class analysis based on 13 variables from the discrimination section. An ordinal logistic regression was used to assess associations with these DDSO levels, and weighted ordinal odds ratios (OR) and their respective 95% confidence intervals (95%CI) were estimated using Gile's estimator. Most participants were young (< 25 years old) black or of mixed-race (pardo), single individuals who had a religious affiliation, primary or incomplete secondary education, and a high and average socioeconomic status. More than half (65%) reported DDSO in the 12 months prior to this study. We observed an independent association among the four latent DDSO classes and the following variables: age < 25 years old (OR = 1.66; 95%CI: 1.21-2.27), white skin color (OR = 1.43; 95%CI: 1.02-2.01), history of sexual (OR = 2.33; 95%CI: 1.58-3.43) and physical violence (OR = 3.08; 95%CI: 2.11-4.49), disclosure of their sexual orientation as MSM to their fathers (OR = 2.00; 95%CI: 1.47-2.72), experienced suicidal ideation in the two weeks prior to this study (OR = 2.09; 95%CI: 1.46-2.98), and use of any illicit drugs in the last six months (OR = 1.61; 95%CI: 1.19-2.18). Our results indicate that contextual factors may contribute to high DDSO levels among MSM in Brazil. Public health policies toward human rights surveillance and protection among MSM must be urgently addressed.
A discriminação com base na orientação sexual mostra uma associação forte com desfechos de saúde entre homens que fazem sexo com homens (HSH). O estudo buscou analisar fatores associados com a discriminação por orientação sexual entre HSH em 12 cidades brasileiras. Um estudo transversal recrutou 4.176 HSH em 2016, usando o método respondent-driven sampling em 12 cidades brasileiras. Os níveis de discriminação por orientação sexual foram identificados previamente por análise de classes latentes, com base em 13 variáveis do capítulo sobre discriminação. Foi usada regressão logística ordinal para avaliar as associações com esses níveis de discriminação por orientação sexual, e o estimador de Gile foi utilizado para estimar as razões de chances ordinais ponderadas (OR) e os respectivos intervalos de 95% de confiança (IC95%). Os participantes eram majoritariamente jovens (< 25 anos), solteiros, com filiação religiosa, com escolaridade primária ou Ensino Médio incompleto, pretos ou pardos e com nível socioeconômico alto ou médio. Mais da metade relatava discriminação por orientação sexual nos últimos 12 meses (65%). Observamos uma associação independente entre as quatro classes latentes de discriminação por orientação sexual e as seguintes variáveis: idade < 25 anos (OR = 1,66; IC95%: 1,21-2,27), cor branca (OR = 1,43; IC95%: 1,02-2,01), história de violência sexual (OR = 2,33; IC95%: 1,58-3,43) e física (OR = 3,08; IC95%: 2,11-4,49), ter divulgado ao pai a orientação sexual enquanto HSH (OR = 2,00; IC95%: 1,47-2,72), relato de ideação suicida nas últimas duas semanas (OR = 2,09; IC95%: 1,46-2,98) e uso de qualquer droga ilícita nos últimos seis meses (OR = 1,61; IC95%: 1,19-2,18). Nossos resultados indicam que fatores contextuais podem contribuir para os altos níveis de discriminação contra HSH no Brasil. São urgentes políticas de saúde pública voltadas para a vigilância e proteção dos direitos humanos dos HSH.
La discriminación debida a la orientación sexual (DDSO, por sus siglas en inglés) tiene una asociación importante con los resultados de salud entre los hombres que tienen sexo con hombres (HSH). El objetivo de este estudio fue analizar factores asociados con DDSO entre HSH en 12 ciudades brasileñas. Un estudio trasversal con 4.176 participantes HSH reclutados en 2016, usando un método de muestreo basado en los encuestados de 12 ciudades brasileñas. Los niveles de DDSO se identificaron previamente mediante un análisis de clase latente, basado en 13 variables desde la sección de discriminación. Se utilizó una regresión logística ordinal para evaluar las asociaciones con estos niveles de DDSO y se estimaron las razones de posibilidades ponderadas ordinales (OR) y su respectivo intervalo de 95% de confianza (IC95%) usando el estimador de Gile. La mayoría de los participantes eran jóvenes (< 25 años de edad), solteros, tenían filiación religiosa, una escolaridad primaria o secundaria incompleta, eran negros o mestizos (pardos) y tenían un elevado promedio socioeconómico. Más de la mitad informaron DDSO en los 12 meses previos (65%). Observamos una asociación independiente entre las cuatro clases latentes de DDSO y las siguientes variables: edad < 25 años (OR = 1,66; IC95%: 1,21-2,27), color de piel blanca (OR = 1,43; IC95%: 1,02-2,01), historia de violencia sexual (OR = 2,33; IC95%: 1,58-3,43) y violencia física (OR = 3,08; IC95%: 2,11-4,49), revelaron al padre su orientación sexual como HSH (OR = 2,00; IC95%: 1,47-2,72), tuvieron ideas suicidas durante las dos semanas previas (OR = 2,09; IC95%: 1,46-2,98) y consumieron alguna droga ilícita en los últimos seis meses (OR = 1,61; IC95%: 1,19-2,18). Nuestros resultados indican que los factores contextuales podrían haber contribuido a los altos niveles de DDSO entre HSH en Brasil. Se deben dirigir urgentemente políticas públicas de salud orientadas a la vigilancia y protección de los derechos humanos entre HSH.
Sujet(s)
Humains , Mâle , Femelle , Adulte , Infections à VIH/épidémiologie , Minorités sexuelles , Perception , Comportement sexuel , Brésil/épidémiologie , Études transversales , Villes , Homosexualité masculineRÉSUMÉ
O objetivo foi analisar os fatores associados ao uso inconsistente de preservativo com parceiros comerciais entre homens que fazem sexo com homens (HSH) no Brasil. Foi feito um estudo transversal, com HSH adultos, recrutados por meio da técnica respondent-driven sampling (RDS), em 12 capitais brasileiras, em 2016. Os HSH responderam a um questionário sociocomportamental, que incluía questões sobre o comportamento sexual. O uso inconsistente de preservativo com parceiros comerciais foi mensurado por meio das relações sexuais anais insertivas e receptivas, ocorridas nos últimos seis meses e na última relação sexual. A associação entre as variáveis independentes e o uso inconsistente de preservativo foi mensurada utilizando o modelo de regressão de Poisson com variância robusta, com estimação de razões de prevalência ajustadas (RPa). Foram analisados dados de 461 HSH. A prevalência de uso inconsistente de preservativo com parceiros comerciais foi de 26% (IC95%: 19,0-34,3, n = 123). Pertencer às classes econômicas mais baixas (D/E), ter médio ou baixo conhecimento sobre HIV, ter praticado sexo anal insertivo e receptivo e nunca ter realizado teste para HIV na vida são fatores que estiveram associados ao uso inconsistente de preservativo com parceiros comerciais. As variáveis associadas ao uso inconsistente indicaram que o sexo comercial está sendo praticado em um contexto de maior vulnerabilidade à infecção pelo HIV. Nesse sentido, são necessárias intervenções biomédicas e comportamentais, com foco no acesso e na utilização de estratégias de prevenção, aliadas a políticas públicas para a redução de desigualdades socioeconômicas entre HSH que praticam sexo comercial.
We aimed to analyze the factors associated with inconsistent condom use among men who have sex with men (MSM) and their commercial sexual partners in Brazil. This is a cross-sectional study with adult MSM who were recruited via respondent-driven sampling (RDS) in 12 Brazilian capitals in 2016. MSM answered a sociobehavioral questionnaire which included questions on their sexual behavior. The inconsistent use of condoms with their clientele was measured via insertive and receptive anal sex in the six months prior to our research and in their last sexual intercourse. The association between independent variables and the inconsistent use of condoms was measured via a Poisson regression model with robust variance and estimation of adjusted prevalence ratios (aPR). Data from 461 MSM were analyzed. We found a 26% prevalence of inconsistent condom use with their clientele (95%CI: 19.0-34.3, n = 123). Belonging to the lowest economic classes (D/E), having medium or low knowledge about HIV, having practiced insertive and receptive anal sex, and having never tested for HIV throughout their lives were associated with inconsistent use of condoms with their clientele. The variables associated with inconsistent use indicated that commercial sex is practiced in a context of greater vulnerability to HIV infection, referring to the need for biomedical and behavioral interventions which focus on access to and use of prevention strategies together with public policies to reduce socioeconomic inequalities among MSM who practice commercial sexual.
El objetivo fue analizar los factores asociados al uso inconsistente del preservativo con las parejas comerciales entre los hombres que tienen sexo con hombres (HSH) en Brasil. Estudio transversal, con HSH adultos, reclutados a través de la técnica respondent-driven sampling (RDS), en 12 capitales brasileñas, en 2016. Los HSH respondieron a un cuestionario sociocomportamental que incluía preguntas sobre el comportamiento sexual. El uso inconsistente del preservativo con parejas comerciales se midió por las relaciones anales insertivas y receptivas que se produjeron en los últimos seis meses y por la última relación sexual. La asociación entre las variables independientes y el uso inconsistente del preservativo se midió mediante el modelo de regresión de Poisson con varianza robusta, con estimación de las razones de prevalencia ajustadas (RPa). Se analizaron los datos de 461 HSH. La prevalencia del uso inconsistente del preservativo con las parejas comerciales fue del 26% (IC95%: 19,0-34,3, n = 123). Pertenecer a las clases económicas más bajas (D/E), tener un conocimiento medio o bajo sobre el VIH, haber practicado sexo anal tanto insertivo como receptivo y no haberse sometido nunca a la prueba del VIH en su vida se asociaron con el uso inconsistente del preservativo con las parejas comerciales. Las variables asociadas al uso inconsistente indicaron que el sexo comercial se está practicando en un contexto de mayor vulnerabilidad a la infección por el VIH, refiriendo la necesidad de intervenciones biomédicas y conductuales, con un enfoque en el acceso y uso de estrategias de prevención, junto con políticas públicas para reducir las desigualdades socioeconómicas entre los HSH que practican el sexo comercial.
RÉSUMÉ
This article discusses the epidemic situation of Covid-19 in Brazil, in the face of the emergence of a new strain called P.1, which is more transmissible and may be associated with reinfection. Given the collapse of hospital care in Manaus in January 2021 and the results of three recent preprints, each that reports increased transmissibility of the P.1 variant, we propose some urgent measures. Genomic surveillance based on multi-step diagnostics, starting with RT-PCR type tests and up to sequencing, should be established. Efforts to identify reinfections associated with this variant and the update of its definition in protocols should be prioritized, and studies on the efficacy of currently available vaccines in Brazil concerning the new variant should be conducted. We also propose improving the Brazilian health surveillance system such that genomic surveillance is coordinated and thereby better able to respond to future emergencies in a more timely fashion. We call on the public agents involved in health surveillance to share data and information regarding the epidemic in a clear, fast and transparent way. Finally, we propose a greater engagement in inter-institutional cooperation of all those involved in the response and production of knowledge about the pandemic in our country.
Sujet(s)
COVID-19 , SARS-CoV-2 , Brésil/épidémiologie , Urgences , Humains , Santé publiqueRÉSUMÉ
BACKGROUND: Heterogeneity in COVID-19 morbidity and mortality is often associated with a country's health-services structure and social inequality. This study aimed to characterize social inequalities in COVID-19 mortality in São Paulo, the most populous city in Brazil and Latin America. METHODS: We conducted a population-based study, including COVID-19 deaths among São Paulo residents from March to September 2020. Age-standardized mortality rates and unadjusted rate ratios (RRs) [with corresponding 95% confidence intervals (CIs)] were estimated by race, sex, age group, district of residence, household crowding, educational attainment, income level and percentage of households in subnormal areas in each district. Time trends in mortality were assessed using the Joinpoint model. RESULTS: Males presented an 84% increase in COVID-19 mortality compared with females (RR = 1.84, 95% CI 1.79-1.90). Higher mortality rates were observed for Blacks (RR = 1.77, 95% CI 1.67-1.88) and mixed (RR = 1.42, 95% CI 1.37-1.47) compared with Whites, whereas lower mortality was noted for Asians (RR = 0.63, 95% CI 0.58-0.68). A positive gradient was found for all socio-economic indicators, i.e. increases in disparities denoted by less education, more household crowding, lower income and a higher concentration of subnormal areas were associated with higher mortality rates. A decrease in mortality over time was observed in all racial groups, but it started earlier among Whites and Asians. CONCLUSION: Our results reveal striking social inequalities in COVID-19 mortality in São Paulo, exposing structural inequities in Brazilian society that were not addressed by the governmental response to COVID-19. Without an equitable response, COVID-19 will further exacerbate current social inequalities in São Paulo.
Sujet(s)
COVID-19 , Brésil/épidémiologie , Villes , Surpeuplement , Caractéristiques familiales , Femelle , Humains , Mâle , Mortalité , SARS-CoV-2 , Facteurs socioéconomiquesRÉSUMÉ
This letter discusses the epidemic situation of Covid-19 in Brazil, in the face of the emergence of a new strain, called P1, more transmissible and with possible associated reinfection. Given the collapse of hospital care in Manaus in January 2021 and the results of three recent preprints, all of which found increased transmissibility of the P.1 variant, we propose some urgent actions: the establishment of genomic surveillance based on multi-step diagnostics, starting with RT-PCR type tests to sequencing; an immediate effort to identify reinfections associated with the new variant, updating its definition protocols; and studies on the efficacy of currently available vaccines in Brazil in respect to the new variant. We also propose the improvement of the Brazilian health surveillance system, which should be articulated with genomic surveillance, in order to respond more timely to future emergencies. We call on the public agents involved in health surveillance to share data and information regarding the epidemic in a clear, fast and transparent way. Finally, we propose a greater engagement in inter-institutional cooperation of all those involved in the response and production of knowledge about the pandemic in our country.
Esta carta discute a situação epidêmica da Covid-19 no Brasil frente aoaparecimento de uma nova linhagem, chamada P1, mais transmissível e compossível re-infecção associada. Tendo em vista o colapso do atendimentohospitalar em Manaus em janeiro de 2021 e os resultados de três preprintsrecentes, todos encontrando maior transmissibilidade da variante P.1, propomos algumas ações urgentes: o estabelecimento de uma vigilância genômica baseada em diagnóstico em múltiplos passos, iniciando com os testes do tipo RT-PCR até o sequenciamento; um esforço imediato na identificação de re-infecções associadas à nova variante, atualizando os seus protocolos de definição; e estudos sobre a eficácia das vacinas atualmente disponíveis no Brasil na vigência da nova variante. Propomos, ademais, o aprimoramento do sistema de vigilância em saúde brasileiro, que seja articulado com a vigilância genômica, de forma a responder mais oportunamente a emergências futuras. Chamamos os agentes públicos implicados na vigilância em saúde para que compartilhem dados e informações referentes à epidemia de forma clara, rápida e transparente. Finalmente propomos um maior engajamento na cooperação inter-institucional de todos os envolvidos na resposta e produção de conhecimento sobre a pandemia em nosso país.
RÉSUMÉ
ABSTRACT: This article discusses the epidemic situation of Covid-19 in Brazil, in the face of the emergence of a new strain called P.1, which is more transmissible and may be associated with reinfection. Given the collapse of hospital care in Manaus in January 2021 and the results of three recent preprints, each that reports increased transmissibility of the P.1 variant, we propose some urgent measures. Genomic surveillance based on multi-step diagnostics, starting with RT-PCR type tests and up to sequencing, should be established. Efforts to identify reinfections associated with this variant and the update of its definition in protocols should be prioritized, and studies on the efficacy of currently available vaccines in Brazil concerning the new variant should be conducted. We also propose improving the Brazilian health surveillance system such that genomic surveillance is coordinated and thereby better able to respond to future emergencies in a more timely fashion. We call on the public agents involved in health surveillance to share data and information regarding the epidemic in a clear, fast and transparent way. Finally, we propose a greater engagement in inter-institutional cooperation of all those involved in the response and production of knowledge about the pandemic in our country.
RESUMO: Este artigo discute a situação epidêmica da COVID-19 no Brasil diante do aparecimento de uma nova linhagem, chamada P.1, mais transmissível e com possível reinfecção associada. Tendo em vista o colapso do atendimento hospitalar em Manaus em janeiro de 2021 e os resultados de três preprints recentes, dos quais todos encontraram maior transmissibilidade da variante P.1, propomos algumas ações urgentes: o estabelecimento de uma vigilância genômica baseada em diagnóstico em múltiplos passos, iniciando com os testes do tipo transcrição reversa seguida de reação em cadeia da polimerase (RT-PCR) até o sequenciamento; um esforço imediato na identificação de reinfecções associadas à nova variante, com a atualização dos protocolos de definição; e estudos sobre a eficácia das vacinas disponíveis no Brasil na vigência da nova variante. Propomos, ademais, o aprimoramento do sistema de vigilância em saúde brasileiro para que seja articulado com a vigilância genômica, de forma a responder mais oportunamente a emergências futuras. Chamamos os agentes públicos implicados na vigilância em saúde para que compartilhem dados e informações referentes à epidemia de forma clara, rápida e transparente. Finalmente propomos maior engajamento na cooperação interinstitucional de todos os envolvidos na resposta e produção de conhecimento sobre a pandemia em nosso país.
Sujet(s)
Humains , SARS-CoV-2 , COVID-19 , Brésil/épidémiologie , Santé publique , UrgencesRÉSUMÉ
A epidemia do HIV no Brasil é concentrada em populações-chave. Organizações não governamentais (ONGs) que atuam em defesa dos direitos da população LGBT e de pessoas vivendo com HIV/aids podem contribuir para o desenvolvimento de políticas de prevenção. O objetivo deste estudo é avaliar o envolvimento em ONGs e analisar sua associação com a participação individual em ações de educação em saúde, testagem e prevenção às infecções sexualmente transmissíveis (IST) e ao HIV, como parte de um estudo nacional de vigilância biológica e comportamental entre homens que fazem sexo com homens (HSH). Trata-se de estudo transversal utilizando respondent driven sampling (RDS) em 12 cidades brasileiras. A magnitude da associação do envolvimento em ONGs com cada ação foi avaliada pela estimativa de odds ratio por meio de regressão logística por amostragem complexa, considerando cada cidade como um estrato e ponderando pelo estimador de Gile. Foi estimada a proporção relativa atribuída ao envolvimento em ONGs para cada evento avaliado. Dentre 4.176 participantes, a maioria tinha menos de 25 anos (56,5%) e baixo nível econômico (56,7%). Um quarto dos HSH referiu se envolver em ONGs, que foi significativamente associado com as ações avaliadas: receber preservativo e gel lubrificante, participar de palestra, receber material educativo e aconselhamento em IST, conhecimento de profilaxia pós-exposição (PEP) e profilaxia pré-exposição (PrEP), testagem para sífilis e HIV, ter aceitação do autoteste e saber onde realizar teste para HIV. ONGs têm um papel histórico na resposta à epidemia de HIV no Brasil e, apesar de terem sofrido significativa redução de recursos nos últimos anos, mantêm relevante atuação nas ações de saúde pública.
The HIV epidemic in Brazil is concentrated in key populations. Nongovernmental organizations (NGOs) working in defense of LGBT rights and the rights of persons living with HIV/AIDS can contribute to the development of prevention policies. The current study's objectives are to assess involvement in NGOs and analyze the association with individual participation in health education, testing, and STI and HIV prevention activities as part of a national study on biological and behavioral surveillance in men who have sex with men (MSM). This is a cross-sectional study using respondent-driven sampling in 12 Brazilian cities. The magnitude of the association between involvement in NGOs and each activity was assessed with estimation of odds ratios via logistic regression with complex sampling, considering each city as a stratum and weighting by the Gile estimator. The relative proportion attributed to involvement in NGOs was estimated for each event. Among 4,176 participants, the majority were under 25 years of age (56.5%) and with low socioeconomic status (56.7%). One-fourth of MSM reported being involved in NGOs, which was associated significantly with the target activities: receiving free condoms and lubricant gel, participating in talks on STIs, receiving educational materials and counseling on STIs, prior knowledge of post-exposure prophylaxis (PEP) and pre-exposure prophylaxis (PrEP), testing for syphilis and HIV, acceptance of HIV self-testing, and knowing where to get an HIV test. NGOs play a historical role in the response to the HIV epidemic in Brazil, and despite a significant cutback in resources in recent years, they have maintained relevant work in public health activities.
La epidemia de VIH en Brasil se concentra en poblaciones clave. Organizaciones no gubernamentales (ONGs) que actúan en defensa de los derechos de la población LGBT, y de personas viviendo con VIH/sida, pueden contribuir al desarrollo de políticas de prevención. El objetivo de este estudio es evaluar la implicación en ONGs y analizar su asociación con la participación individual en acciones de educación en salud, pruebas y prevención frente a las IST y al VIH, como parte de un estudio nacional de vigilancia biológica y comportamental entre hombres que practican sexo con hombres (HSH). Se trata de un estudio transversal, utilizando respondent driven sampling en 12 ciudades brasileñas. Se evaluó la magnitud de la asociación de la implicación en ONGs con cada acción mediante la estimación de odds ratio, a través de una regresión logística por muestra compleja, considerando cada ciudad como un estrato, y ponderando por el estimador de Gile. Se estimó la proporción relativa atribuida a la implicación en ONGs para cada evento evaluado. De entre los 4176 participantes, la mayoría tenía menos de 25 años (56,5%) y bajo nivel económico (56,7%). Un cuarto de los HSH mencionó estar implicado en ONGs, lo que estuvo significativamente asociado con las acciones evaluadas: recibir preservativo y gel lubrificante, participar en ponencias, recibir material educativo y consejo en IST, conocimiento de profilaxia pos-exposición (PEP) y profilaxia pre-exposición (PrEP), pruebas de sífilis y VIH, haber aceptado el autotest y saber donde realizar el test para el VIH. Las ONGs tienen un papel histórico en la respuesta a la epidemia de VIH en Brasil y, a pesar de haber sufrido una significativa reducción de recursos en los últimos años, mantienen una relevante actuación en las acciones de salud pública.
RÉSUMÉ
Background: Transgender women worldwide have among the highest prevalence of HIV and the lowest access to prevention among groups at risk. However, few longitudinal studies have directly measured HIV incidence and identified predictors of HIV acquisition among transgender women. Setting: São Paulo, Latin America's largest city. Methods: We conducted a longitudinal study among transgender women in São Paulo. Participants were recruited by a long-chain peer referral process from May 2017 to July 2019. Those age 18 years and older and HIV-negative at baseline were retested every 6 months up to 18 months. HIV incidence was calculated by dividing the number of seroconversions by the person-years (py) of follow-up; 95% confidence intervals (CI) were constructed assuming a Poisson distribution. Conditional maximum likelihood ratios assessed differences in HIV incidence by risk factors. Results: A racial/ethnically diverse sample of 545 transgender women were enrolled. In 485.5 py of follow-up, 13 seroconversions were observed yielding an incidence of 2.68 per 100 py (95% CI 1.434.58). HIV incidence was significantly higher among transgender women age 18 to 24 years (rate ratio 3.85, 95% CI 1.2412.93) and among those who engaged in sex work in the preceding month (rate ratio 5.90, 95% CI 1.7126.62). Conclusion: HIV transmission continues at a high rate among transgender women in Brazil. Factors such as young age, lower level of education, and limited employment opportunities may lead to dependence upon sex work which in turn increase HIV risk. Transgender-friendly prevention services, particularly programs delivering pre-exposure prophylaxis (PrEP) are urgently needed.