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1.
Rev. méd. Urug ; 38(2): e38206, jun. 2022.
Article in Spanish | LILACS, UY-BNMED, BNUY | ID: biblio-1389692

ABSTRACT

Resumen: Introducción: por ser los varones gais y los hombres que tienen sexo con hombres (HSH) una población con mayor incidencia de virus de inmunodeficiencia humana (VIH), ONUSIDA recomienda el monitoreo periódico mediante encuestas que releven información para reportar indicadores de prevención. La implementación de estos estudios en nuestro medio es limitada debido a la complejidad y costos de las metodologías tradicionales. Objetivo: generar información actualizada sobre prevención del VIH, con énfasis en uso de condón y realización de pruebas de tamizaje en gais/HSH de 15 a 49 años en Uruguay, implementando una estrategia metodológica innovadora. Material y método: estudio de corte transversal y analítico, en base a una encuesta online disponible entre octubre y diciembre de 2019. Resultados: se incluyeron 693 varones, 67% de Montevideo y 67% con nivel educativo terciario. Un 17% fue forzado a mantener relaciones sexuales alguna vez, 20% sufrió maltrato por su orientación y 68,4% ocultaba su orientación sexoafectiva en algún grado. Un 57,2% usó condón en la última relación sexual anal casual, observándose un descenso respecto al año 2012 (67,6%), mientras que la tendencia en la cobertura de prueba de VIH (66%) fue creciente comparada con estudios previos. La proporción de positividad de VIH fue de 13,3%. El análisis multivariado mostró que la menor probabilidad de uso de condón se asocia a: pareja estable en el último año, autoidentificación gay, prueba de VIH en el último año y vacunación para virus papiloma humano. La mayor probabilidad de uso se asoció a: participación en actividades de información, relaciones sexuales con personas con ITS/VIH. La menor probabilidad de realización de prueba de VIH se asoció con pareja estable y la mayor con el conocimiento de lugares de acceso a prueba y conocimiento de la profilaxis posexposición. Entre quienes conocían la profilaxis preexposición (375), 46,1% estaba dispuesto a recibirla y 1,3% había accedido. Conclusiones: la persistencia de situaciones de discriminación y violencia hacia varones gais/HSH necesita acciones más efectivas de promoción de derechos. Es necesario integrar innovaciones biomédicas en prevención que se complementen y potencien para el control de la epidemia. El uso de una encuesta en línea fue eficiente en el reclutamiento, aunque con sesgos en la selección, lo que desafía a mejorar esta estrategia metodológica.


Summary: Introduction: as gay men and men who have sex with men (MSM) constitute a population with a greater incidence of HIV, UNAIDS recommends regular surveillance by means of surveys that provide information that allows reporting prevention indicators. The implementation of these studies is limited in our context given the high complexity and costs of traditional methodologies. Objectives: to generate updated information about HIV prevention, with an emphasis on condom use and to implement screening tests in gay/MSM population between 15 and 49 years old in Uruguay, using an innovative methodological strategy. Method: transversal, analytical study by means of a web-based survey available between October and December 2019. Results: 693 men were included in the study, 67% from Montevideo and 67% of which had university studies. 17% of them had been forced to have sex in the past, 20% had suffered abuse because of their sexual orientation and 68.4% concealed their sex-affective orientation to some extent. 57.2% used condoms in their last casual anal sexual relationship, what evidences a decrease with regard to 2012 (67.6%), whereas a growing tendency in the HIV test coverage (66%) was observed, when compared to previous studies. HIV positivity rate was 13.3%. The multivariate analysis revealed a lower probability of condom use was associated to: a stable partner in the last year, gay self-identification, HIV test in the last year and having the HPV vaccine. The greater likelihood of use was associated to: participating in informative activities, having sex with people with STD/HIV. The lowest probability of having an HIV test was associated to a stable partner and the highest was associated to knowing where they could get tested for HIV and also knowing about the post-exposure prophylaxis. When considering those who knew about the pre-exposure prophylaxis (375), 46.1% was willing to receive it and 1.3% had agreed to it. Conclusions: the continuation of discrimination and violence towards gay men and MSM needs more effective right promoting actions. We need to integrate into prevention biomedical innovations that complement and leverage one another. The web-based survey was effective in terms of recruiting, although there were bias in the selection, what results challenging to improve the methodological strategy.


Resumo: Introdução: como gays e homens que fazem sexo com homens (HSH) são uma população com maior incidência de HIV, o UNAIDS recomenda o monitoramento regular por meio de pesquisas que coletem informações para calcular indicadores de prevenção. A implementação desses estudos em nosso ambiente é limitada devido à complexidade e custo das metodologias tradicionais. Objetivo: gerar informações atualizadas sobre prevenção do HIV, com ênfase no uso de preservativos e testes de triagem em gays/HSH de 15 a 49 anos no Uruguai, implementando uma estratégia metodológica inovadora. Método: estudo transversal e analítico, baseado em questionário online disponível entre outubro e dezembro de 2019. Resultados: foram incluídos 693 homens, 67% de Montevidéu e 67% com nível superior. 17% foram obrigados a ter relações sexuais em algum momento, 20% sofreram maus-tratos devido à sua orientação e 68,4% ocultaram sua orientação sexual-afetiva em algum grau. 57,2% usaram preservativo na última relação anal casual, mostrando um decréscimo em relação a 2012 (67,6%), enquanto a tendência da cobertura do teste anti-HIV (66%) foi de aumento em relação a estudos anteriores. A taxa de positividade do HIV foi de 13,3%. A análise multivariada mostrou menor probabilidade de uso de preservativo associado a: parceiro estável no último ano, autoidentificação gay, teste de HIV no último ano e vacinação para papiloma vírus humano. A maior probabilidade de uso esteve associada a: participação em atividades informativas, relações sexuais com pessoas com IST/HIV. A menor probabilidade de realização do teste anti-HIV foi associada ao parceiro estável e a maior ao conhecimento dos locais de acesso ao teste e conhecimento da profilaxia pós-exposição. Entre os que conheciam a profilaxia pré-exposição (375), 46,1% estavam dispostos a recebê-la, 1,3% já haviam recebido. Conclusões: a persistência de situações de discriminação e violência contra gays/HSH requer ações mais efetivas de promoção de direitos. É necessário integrar inovações biomédicas na prevenção que se complementem e se fortaleçam para o controle da epidemia. A utilização de uma pesquisa online foi eficiente no recrutamento, embora com vieses de seleção, o que desafia a melhorar essa estratégia metodológica.


Subject(s)
Humans , Male , Health Surveys , HIV , Homosexuality, Male/statistics & numerical data
2.
Ciênc. Saúde Colet. (Impr.) ; Ciênc. Saúde Colet. (Impr.);25(3): 1025-1039, mar. 2020. tab
Article in Portuguese | LILACS | ID: biblio-1089492

ABSTRACT

Resumo Objetivou-se analisar a associação entre fatores sociodemográficos, programáticos e contextuais e ter recebido dinheiro em troca de sexo entre homens que fazem sexo com homens (HSH). Estudo multicêntrico, transversal, realizado em 10 cidades brasileiras, entre 2008 e 2009. Foram entrevistados 3.749 HSH selecionados pela técnica amostral "Respondent Driven-Sampling" (RDS). "Odds Ratio" ponderado (ORp) foi obtido por meio de regressão logística, permanecendo no modelo final as variáveis associadas ao evento (p < 0,05). Da amostra total, 33,3% relataram ter recebido dinheiro em troca de sexo nos últimos 12 meses anteriores à entrevista. As variáveis associadas com o evento foram ter idade ≤ 25 anos, menor nível de escolaridade, classes sociais mais baixas, história prévia de infecção por sífilis, utilizar locais de encontros para ter parceiros sexuais, ter comportamento de risco para HIV muito alto e usar drogas ilícitas, se autoidentificarem como heterossexual ou bissexual, ter sofrido violência física devido à orientação sexual e apresentar ideação suicida sempre ou na maioria das vezes. Observa-se que os HSH que receberam dinheiro em troca de sexo apresentaram maior vulnerabilidade socioeconômica, programática e contextual, potencialmente aumentando o risco de infecção pelo HIV em relação aos demais HSH.


Abstract This study aimed to analyze the association between sociodemographic, programmatic and contextual factors and the receipt of money in exchange for sex among men who have sex with men (MSM). This is a multicenter, cross-sectional study conducted in ten Brazilian cities between 2008 and 2009. Adult MSM recruited through the Respondent Driven Sampling (RDS) were interviewed. Weighted Odds Ratio (ORw) was obtained through logistic regression, retaining the variables associated with the event (p < 0.05) in the final model. Of the total sample, 33.3% reported receiving money in exchange for sex in the last 12 months before the interview. The variables that were independently associated with the event were age less than or equal to 25 years, lower education, lower social classes, previous history of syphilis, using sites or services to find sexual partners in the previous month, very high risk behavior, using illicit drugs in the previous six months, self-identifying as heterosexual or bisexual, having suffered physical violence due to sexual orientation and having suicidal thoughts always or most of the time. It was observed that MSM who received money in exchange for sex had greater socioeconomic, programmatic and contextual vulnerability, potentially increasing the risk of HIV infection than the other MSM in the sample.


Subject(s)
Humans , Male , Adult , Young Adult , Sex Work/statistics & numerical data , Homosexuality, Male/statistics & numerical data , Socioeconomic Factors , Urban Population , Brazil , Cross-Sectional Studies
3.
Rev. bras. enferm ; Rev. bras. enferm;73(supl.2): e20200913, 2020. tab, graf
Article in English | LILACS, BDENF | ID: biblio-1137601

ABSTRACT

ABSTRACT Objective: To evaluate the presence of flu-like syndrome suggestive of COVID-19 in men who have sex with men (MSM) and engaged in casual sex during a period of social isolation. Method: National epidemiological survey, applied in April and May 2020, by adaptation of Respondent Drive Sampling. Results: 1,337 MSM participated in the survey, of which 514 (38.4%) had fever associated with another sign or symptom of flu-like syndrome. Social, demographic characteristics, sexual practices and activities during the period of social isolation were statistically associated with the presence of flu-like syndrome. There was a statistical difference (p < 0.001) in the average of partners between those who had signs and symptoms of flu-like syndrome (3.5) and those who did not (1.7). Conclusion: Evidence of signs and symptoms indicative of flu-like syndrome suggestive of COVID 19 in Brazilian MSM who were involved in casual sex during the period of social isolation.


RESUMEN Objetivo: Evaluar la presencia de síndrome gripal sospecha de COVID-19 en hombres que tienen sexo con hombres (HSH) y se envolvieron en sexo con pareja ocasional durante distanciamiento social. Método: Averiguación epidemiológica, de abarcamiento nacional, aplicado en abril y mayo de 2020, por adaptación del Respondent Drive Sampling. Resultados: 1.337 HSHs participaron de la investigación, de los cuales 514 (38,4%) tuvieron fiebre relacionada a otra señal o síntoma de síndrome gripal. Características sociales, demográficas, prácticas y actividades sexuales durante el distanciamiento social han estáticamente relacionadas a la presencia de síndrome gripal. Hubo diferencia estadística (p < 0,001) en la media de parejas entre aquellos que tuvieron señales y síntomas de síndrome gripal (3,5) y aquellos que no los tuvieron (1,7). Conclusión: Se evidencia ocurrencia de señales y síntomas indicativos de síndrome gripal sugestivo de COVID-19 en HSHs brasileños que se envolvieron en sexo ocasional durante el período del distanciamiento social.


RESUMO Objetivo: Avaliar a presença de síndrome gripal suspeita de COVID-19 em homens que fazem sexo com homens (HSH) e se envolveram em sexo com parceiro casual durante período de distanciamento social. Método: Inquérito epidemiológico, de abrangência nacional, aplicado em abril e maio de 2020, por adaptação do Respondent Drive Sampling. Resultados: 1.337 HSHs participaram da pesquisa, dos quais 514 (38,4%) tiveram febre associada a outro sinal ou sintoma de síndrome gripal. Características sociais, demográficas, práticas e atividades sexuais durante o período de distanciamento social foram estaticamente associadas à presença de síndrome gripal. Houve diferença estatística (p < 0,001) na média de parceiros entre aqueles que tiveram sinais e sintomas de síndrome gripal (3,5) e aqueles que não os tiveram (1,7). Conclusão: Evidencia-se ocorrência de sinais e sintomas indicativos de síndrome gripal sugestiva de COVID19 em HSHs brasileiros que se envolveram em sexo casual durante o período do distanciamento social.


Subject(s)
Adult , Humans , Male , Middle Aged , Young Adult , Pneumonia, Viral/diagnosis , Coronavirus Infections/diagnosis , Homosexuality, Male , Clinical Laboratory Techniques , Symptom Assessment , Sexual and Gender Minorities , Betacoronavirus , Brazil , Quarantine , Health Surveys , Homosexuality, Male/statistics & numerical data , Influenza, Human/diagnosis , Pandemics , Sexual and Gender Minorities/statistics & numerical data , Online Social Networking , COVID-19 Testing , SARS-CoV-2 , COVID-19
4.
Ciênc. Saúde Colet. (Impr.) ; Ciênc. Saúde Colet. (Impr.);24(3): 973-982, mar. 2019. tab
Article in Portuguese | LILACS | ID: biblio-989615

ABSTRACT

Resumo O artigo apresenta resultados de pesquisa etnográfica na comunidade gay do Recife (PE), realizada por meio de observação participante e entrevistas. Objetiva compreender condutas sexuais de risco de homens que fazem sexo com homens (HSH) ao HIV, focando os sentidos das posições sexuais no intercurso anal — receptivo (IAR) e insertivo (IAI). Praticantes de IAR desprotegido são sujeitos a maior risco de infecção que praticantes de IAI. Os que praticam ambos, IAR e IAI, são elos amplificadores (maiores chances de receber e passar o vírus) nas cadeias de transmissão. O texto aborda as categorias êmicas, relacionadas com as identidades de gênero — pintosa (gay feminino), boy (gay masculino) e cafuçu (HSH e com mulheres, não gay, masculino, classe popular) — e com as identidades sexuais — ativo (IAI), passivo (IAR) e versátil (IAI e IAR) —, nos modos como significam as posições sexuais e produzem atração sexual. Os homens masculinos são os sexualmente desejados. Boys tendem a se relacionar com boys, e pintosas, com cafuçus. Há expressivo número de versáteis, o que amplia o risco coletivo dentro da comunidade gay. Por meio das relações entre pintosas e cafuçus, pode existir um caminho propício para o vírus circular mais entre a comunidade gay e a sociedade mais ampla.


Abstract The article presents the results of an ethnographic study of the gay community in Recife (PE), conducted via participant observation and interviews. It seeks to understand sexual risk conduct among men who have sex with men (MSM) and HIV, focusing on the significance of sexual positions during anal-receptive intercourse (ARI) and anal-insertive intercourse (AII). Those who practice unprotected ARI are subject to a greater risk of infection than those who practice AII. Those who practice both, ARI and AII, are amplifiers (greater chances of receiving and passing on the virus) in the transmission chains. The text addresses the emic categories related with gender identities - pintosa (female gay), boy (male gay), and cafuçu (MSM and with women, non-gay, male, lower social class) - and with gender identities - active (AII), passive (ARI), and versatile (AII and ARI) - in the ways they result in sexual positions and produce sexual attraction. Masculine men are the most sexually desirable. Boys tend to relate with boys, and pintosas with cafuçus. There is a significant number of versatiles, which increases the collective risk within the gay community. By means of the relations between pintosas and cafuçus, there is increased danger for the virus to circulate more among the gay community and society in general.


Subject(s)
Humans , Male , Adolescent , Adult , Young Adult , Sexual Behavior/statistics & numerical data , HIV Infections/transmission , Homosexuality, Male/statistics & numerical data , Sexual and Gender Minorities/statistics & numerical data , Risk-Taking , Brazil , Sexual Partners , Interviews as Topic , Risk Factors , Gender Identity
5.
Braz. j. infect. dis ; Braz. j. infect. dis;23(1): 2-7, Jan.-Feb. 2019. tab
Article in English | LILACS | ID: biblio-1001498

ABSTRACT

ABSTRACT Background: Men who have sex with men (MSM) account for the highest prevalence of HIV in Brazil. HIV testing allows to implement preventive measures, reduces transmission, morbidity, and mortality. Methods: We conducted a cross-sectional study to evaluate HIV testing during lifetime, factors associated with the decision to test, knowledge about HIV transmission, and use of condoms between MSM from the city of Natal, northeast Brazil. Results: Out of 99 participants, 62.6% had been tested for HIV during lifetime, 46.2% in the last year. The most frequent reported reason to be tested for HIV infection was curiosity (35.5%). Correct knowledge about HIV was observed in only 9.2% of participants. In multivariate analysis, age (PR 0.95; 95%CI, 0.91-0.99; p = 0.041) and previous syphilis test (PR 4.21; 95%CI, 1.52-11.70; p = 0.006) were associated with HIV testing. Conclusions: The frequency of HIV testing among MSM from Natal is rather low, especially in younger MSM, and knowledge about HIV transmission is inappropriate.


Subject(s)
Humans , Male , Adult , Young Adult , AIDS Serodiagnosis/statistics & numerical data , HIV Infections/epidemiology , Health Knowledge, Attitudes, Practice , Homosexuality, Male/statistics & numerical data , Socioeconomic Factors , Brazil/epidemiology , HIV Infections/diagnosis , HIV Infections/transmission , Cross-Sectional Studies , Multivariate Analysis , Surveys and Questionnaires , Regression Analysis , Risk Factors
6.
Article in Chinese | WPRIM | ID: wpr-738220

ABSTRACT

Objective: To understand the transmission patterns and risk factors of HIV-1 strain CRF01_AE subtypes in China, and to provide guidance for the implementation of precise intervention. Methods: A total of 2 094 CRF01_AE pol sequences were collected in 19 provinces in China between 1996 and 2014. Phylogenetic tree was constructed by PhyML 3.0 software to select the transmission clusters. Transmission network was constructed by Cytoscape 3.6.0, which was further used for exploring of the major risk factors. Results: Of the 2 094 sequences, 12.18% (255/2 094) were in clusters. A total of 82 transmission clusters were identified. The numbers of clusters and contained sequences in intra-provincial transmission (61, 173) were significantly more than those in inter-provincial transmission (21, 82). The ratio of transmission clustering in MSM increased over time from 2.41% (2/83) during 1996-2008 to 23.61% (72/305) during 2013-2014, showing a significant upward trend (χ(2)=27.800, df=1, P=0.000). The proportion of MSM with inter-provincial transmission clusters were higher than those with intra-provincial transmission clusters, which increased from 0.67% (2/297) during 1996-2008 to 6.36%(30/472) during 2013-2014, showing a significant upward trend (χ(2)=20.276, df=1, P=0.000). The transmission rate in homosexuals of the inter-transmission clusters (86.59%, 71/82) was higher than that of intra-provincial transmission clusters (56.65%, 98/173), and the difference was statistically significant (χ(2)=22.792, P=0.000). The proportion of inter-provincial transmission clusters with more than 2 transmission routes (33.33%, 7/21) was higher than that of intra-provincial clusters (13.11%, 8/61), and the difference was statistically significant (χ(2)=4.273, P=0.039). Results from the transmission network analysis indicated that the proportion of high risk population (degree≥4) with inter-provincial transmission clusters (51.22%, 42/82) was significantly higher than that with intra-provincial transmission clusters (26.59%, 46/173), and the difference was statistically significant (χ(2)=14.932, P=0.000). Inter-provincial clusters were mainly detected in and and MSM. Conclusions: Complex transmission networks were found for HIV-1 CRF01_AE strains in the mainland of China. Inter-provincial transmission clusters increased rapidly, MSM played an important role in the wide spread of the strain. More researches in transmission networks are needed to guide the precision intervention.


Subject(s)
Humans , Male , China/epidemiology , HIV Infections/virology , HIV-1/isolation & purification , Homosexuality, Male/statistics & numerical data , Phylogeny
7.
Rev. bras. epidemiol ; Rev. bras. epidemiol;22(supl.1): e190003, 2019. tab, graf
Article in English | LILACS | ID: biblio-1042212

ABSTRACT

ABSTRACT Introduction: Discrimination based on sexual orientation can influence vulnerability to HIV, increasing exposure to risky sexual behavior among men who have sex with men (MSM). Objectives: To analyze data using latent class analysis (LCA) to identify groups of individuals with specific patterns of discrimination based on sexual orientation (DSO). Methods: Cross-sectional study using respondent-driven sampling in 12 Brazilian cities in 2016. LCA was used to characterize discrimination among MSM based on 13 variables in the survey questionnaire. The proportions of men reporting DSO and other variables of interest were estimated using Gile's Successive Sampling estimator. Results: Most MSM were young, single, had a religion, had a high school or college degree, black or brown skin color, and socioeconomic status classified as average. More than half of the participants reported that they had been discriminated against during the last 12 months due to their sexual orientation (65%), more than a third said they had felt afraid of walking in public places during the past 12 months, and about one-fifth of participants reported having been victims of physical or sexual assault due to DSO. DSO was classified into four latent classes: "very high", "high", "moderate" and "low", with estimates of 2.2%, 16.4%, 35.1%, and 46.19%, respectively. Conclusion: We observed a high proportion of discrimination against MSM in this study. The use of LCA differentiated parsimoniously classes of discrimination.


RESUMO Introdução: A discriminação por orientação sexual (DPOS) pode influenciar a vulnerabilidade ao HIV aumentando a exposição a comportamentos sexuais de risco entre homens que fazem sexo com homens (HSH). Objetivos: Examinar dados utilizando a análise de classes latentes (ACL) para identificar grupos de indivíduos com padrões específicos de DPOS. Métodos: Estudo transversal com entrevistados recrutados pelo processo amostral respondent driven sampling em 12 cidades brasileiras em 2016. A ACL foi usada para caracterizar o DPOS entre HSH com base em 13 variáveis do bloco de discriminação do questionário da pesquisa. As proporções de DPOS e das variáveis de interesse, bem como seus intervalos de confiança (95%) foram ponderados usando o estimador de Gile. Resultados: A maioria era de jovens, solteiros, com alguma religião, escolaridade média ou superior, cor da pele preta ou parda e com nível socioeconômico médio. Mais da metade referiu ter sido discriminado nos últimos 12 meses por sua orientação sexual (65%), mais de um terço referiu ter tido medo de andar em lugares públicos nos últimos 12 meses e em torno de um quinto dos participantes reportaram ter sofrido agressão física ou sexual na vida. A DPOS foi classificada em 4 classes latentes, "muito alta", "alta", "média" e "baixa", com estimativas de 2,2%, 16,4%, 35,1% e 46,19%, respectivamente. Conclusão: Observou-se alta proporção de discriminação entre os HSH participantes deste estudo. A utilização da ACL discriminou de maneira parcimoniosa as classes de DPOS.


Subject(s)
Humans , Male , Adult , Homosexuality, Male/statistics & numerical data , Sexism/statistics & numerical data , Socioeconomic Factors , Brazil/epidemiology , Cross-Sectional Studies , Homosexuality, Male/ethnology , Discrimination, Psychological , Self Report , Sexism/ethnology , Latent Class Analysis
8.
Rev. bras. epidemiol ; Rev. bras. epidemiol;22(supl.1): e190005, 2019. tab
Article in English | LILACS | ID: biblio-1042211

ABSTRACT

ABSTRACT Introduction: High level of HIV/AIDS knowledge is required for an effective adoption of preventive strategies. Objective: To assess HIV/AIDS knowledge among men who have sex with men (MSM) in 12 Brazilian cities. Methods: Respondent-Driven Sampling method was used for recruitment. HIV/AIDS knowledge was assessed by Item Response Theory. Difficulty and discrimination parameters were estimated, and the knowledge score was categorized in three levels: high, medium, and low. Logistic regression was used for analysis. Results: Among 4,176 MSM, the proportion of high level of knowledge was 23.7%. The following variables were positively associated with high knowledge (p < 0.05): age 25+ years old, 12+ years of schooling, white skin color, having health insurance, having suffered discrimination due to sexual orientation, having had a syphilis test, and having received educational material in the previous 12 months. Exchanging sex for money was negatively associated. Conclusions: The proportion of only 23.7% of high HIV/AIDS knowledge was low. We should note that the only potential source of knowledge acquisition associated with high level of knowledge was receiving educational materials. Our study indicates the need for expansion of public prevention policies focused on MSM and with more effective communication strategies, including the development of knowledge that involves motivation and abilities for a safer behavior.


RESUMO Introdução: Alto nível de conhecimento sobre HIV/aids é necessário para uma efetiva adoção de estratégias preventivas. Objetivo: Avaliar o nível de conhecimento sobre HIV/aids entre homens que fazem sexo com homens (HSH) de 12 cidades brasileiras. Metodologia: O método Respondent-Driven Sampling foi utilizado para recrutamento. O conhecimento sobre HIV/aids foi avaliado por meio de 12 perguntas e analisados pela Teoria de Resposta ao Item. Foram estimados os parâmetros de dificuldade e discriminação e o escore de conhecimento categorizado em três níveis: alto, médio e baixo. Regressão logística foi utilizada para a análise. Resultados: Do total de 4.176 HSH, a proporção de alto nível de conhecimento foi de 23,7%. Estiveram associados positivamente (p < 0,05) com o alto conhecimento: idade 25+ anos, escolaridade 12+ anos, cor da pele branca, ter plano de saúde, ter sofrido discriminação devido à orientação sexual, ter realizado teste para sífilis e recebido material educativo nos últimos 12 meses. Ter recebido dinheiro por sexo esteve negativamente associado. Conclusões: A proporção de apenas 23,7% de alto nível de conhecimento sobre HIV/aids foi baixa. Destaca-se que a única potencial fonte formal de aquisição de conhecimento associada com alto nível de conhecimento foi receber material educativo. Este estudo aponta a necessidade de expandir as políticas públicas de prevenção focadas no segmento HSH e com estratégias de comunicação mais eficazes, incluindo o desenvolvimento de conhecimento que envolva motivação e habilidade para um comportamento mais seguro.


Subject(s)
Humans , Male , Adult , HIV Infections/prevention & control , Health Knowledge, Attitudes, Practice , Homosexuality, Male/statistics & numerical data , Socioeconomic Factors , Brazil , Logistic Models , Cross-Sectional Studies , Multivariate Analysis , Surveys and Questionnaires , Health Risk Behaviors
9.
Rev. bras. epidemiol ; Rev. bras. epidemiol;22: e190004, 2019. tab, graf
Article in English | LILACS | ID: biblio-990748

ABSTRACT

ABSTRACT: Introduction: This paper details the methods used in the second national Biological and Behavioral Surveillance Survey (BBSS) of HIV, syphilis, and hepatitis B and C among men who have sex with men in Brazil. Methods: Respondent-driven sampling (RDS) was used in 12 cities in 2016. The targeted sample size was initiated with five to six seeds in each city. HIV, syphilis, and Hepatitis B and C rapid tests were offered to participants. RDS Analyst with Gile's successive sampling (SS) estimator was used to adjust results as recommended and a weight for each individual was generated for further analysis. Data for the 12 cities were merged and analyzed using Stata 14.0 complex survey data tools with each city treated as its own stratum. Results: Duration of data collection varied from 5.9 to 17.6 weeks. 4,176 men were recruited in the 12 cities. Two sites failed to achieve targeted sample size due to a six-month delay in local IRB approval. No city failed to reach convergence in our major outcome variable (HIV). Conclusion: The comprehensive BBSS was completed as planned and on budget. The description of methods here is more detailed than usual, due to new diagnostic tools and requirements of the new STROBE-RDS guidelines.


RESUMO: Introdução: Este artigo detalha os métodos utilizados na segunda Pesquisa Nacional de Vigilância Biológica e Comportamental (BBSS) do HIV, sífilis e hepatite B e C entre os homens que fazem sexo com homens no Brasil. Métodos: O método Respondent-driven Sampling (RDS) foi utilizado em 12 cidades em 2016. A amostra foi iniciada com cinco a seis sementes em cada cidade. Testes rápidos para o HIV, sífilis e Hepatite B e C foram oferecidos aos participantes. O software RDS Analyst com o estimador de amostragem sucessiva (SS) de Gile foi utilizado para ajustar os resultados como recomendado, gerando um peso para cada indivíduo para análises. Osdados das 12cidades foram unidos em um único banco e analisados usando as ferramentas de dados complexos do Stata 14.0, com cada cidade sendo tratada como seu próprio estrato. Resultados: A duração da coleta de dados variou de 5,9 a 17,6 semanas e 4.176 homens foram recrutados nas 12 cidades. Dois sites não alcançaram o tamanho da amostra alvo devido a uma demora de seis meses na aprovação local do Comitê de Ética. Todas as cidades atingiram a convergência na principal variável estudada (HIV). Conclusão: O BBSS foi representativo e concluído conforme planejado e dentro do orçamento. A descrição dos métodos aqui é mais detalhada do que o habitual, devido às novas ferramentas e requisitos de diagnóstico das novas diretrizes do STROBE-RDS.


Subject(s)
Humans , Male , Adult , Syphilis/diagnosis , HIV Infections/diagnosis , Hepatitis C/diagnosis , Homosexuality, Male/statistics & numerical data , Hepatitis B/diagnosis , Brazil/epidemiology , Syphilis/epidemiology , HIV Infections/epidemiology , Population Surveillance , Prevalence , Surveys and Questionnaires , Health Surveys/methods , Hepatitis C/epidemiology , Self Report , Hepatitis B/epidemiology
10.
Braz. j. infect. dis ; Braz. j. infect. dis;22(6): 472-476, Nov.-Dec. 2018. tab, graf
Article in English | LILACS | ID: biblio-984015

ABSTRACT

ABSTRACT Human T cell lymphotropic virus type 1 (HTLV-1) was the first retrovirus discovered in humans and is endemic in several parts of the world. Because of risk behaviors, mainly sexual, men who have sex with men (MSM) are at high risk of acquiring HTLV-1 infection. A cross-sectional study was performed to estimate the prevalence of HTLV-1 infection, to characterize genetically HTLV-1 sequences and to identify risk behaviors associated with this infection among MSM in Central Brazil. A total of 430 MSM were enrolled in this study and three were shown to be HTLV-1 infected, prevalence of 0.7% (95% confidence interval: 0.4-0.9). Phylogenetic analysis showed that all HTLV-1 positive samples belonged to Cosmopolitan subtype Transcontinental subgroup A. Although the prevalence rate of HTLV-1 infection found in this study was similar to that observed among Brazilian blood donors, additional HTLV-1 preventive interventions need to be further implemented because this population is engaged in high-risk sexual behavior.


Subject(s)
Humans , Male , Adult , Middle Aged , Aged , Young Adult , Human T-lymphotropic virus 1/genetics , HTLV-I Infections/epidemiology , Homosexuality, Male/statistics & numerical data , Phylogeny , Brazil/epidemiology , HTLV-I Infections/diagnosis , HTLV-I Infections/transmission , Prevalence , Cross-Sectional Studies , Risk Factors , Sexual and Gender Minorities
11.
Braz. j. infect. dis ; Braz. j. infect. dis;22(2): 113-122, Mar.-Apr. 2018. tab, graf
Article in English | LILACS | ID: biblio-951632

ABSTRACT

ABSTRACT HIV/AIDS epidemic is not well controlled, and multiple sexual behavior factors help explain high rates of HIV infection among men who have sex with men (MSM). This article proposes to exam the use of a potential risk behavior score for HIV infection, based on the type and number of sexual partners, and condom use, and their associated factors in a sample of MSM in Brazil. A cross sectional RDS (Respondent Driven Sampling) study was performed among 3738 MSM aged 18+ years old from ten Brazilian cities. The risk behavior score was composed by the number of male partners and anal condom use in the last year with steady, casual, and commercial partners. Most participants were 25+ years old (58.1%), non-white (83.1%), and single (84.9%). Final weighted ordinal logistic model showed that age ≤ 25 years old (p = 0.037), homosexual or bisexual identity (p < 0.001), sexual initiation before 15-year-old (p < 0.001), having sex with men only in the last 12 months (p < 0.001), frequent alcohol and illicit drug use (p < 0.001), and use of local sites to meet sexual partners in the last month were independently associated with higher scores of risky behavior. Specific strategies should be developed aimed at the MSM population. Additionally, pre-exposed prophylaxis (Prep) should be considered for those at higher score as a strategy for reducing risk for HIV infection in this population.


Subject(s)
Humans , Male , Adolescent , Adult , Young Adult , Risk-Taking , HIV Infections/epidemiology , Homosexuality, Male/statistics & numerical data , Social Class , Brazil/epidemiology , Sexual Partners , Syphilis/blood , Syphilis/transmission , HIV Infections/prevention & control , HIV Infections/transmission , Cross-Sectional Studies , Risk Factors , Acquired Immunodeficiency Syndrome/prevention & control , Acquired Immunodeficiency Syndrome/epidemiology , Condoms/statistics & numerical data , Risk Assessment , Educational Status
12.
Chinese Journal of Epidemiology ; (12): 495-499, 2018.
Article in Chinese | WPRIM | ID: wpr-737989

ABSTRACT

Objective: To determine the prevalence and relative factors on those who missed the follow-up service among newly reported HIV/AIDS cases that were infected by homosexual behavior. Methods: Data were extracted from both HIV/AIDS case-reporting and follow-up cards on HIV/AIDS in the Comprehensive Response Information Management System, between December 2008 and December 2015. Data was analyzed, using the generalized estimating equations (GEE) to explore the relative factors of influence. Results: Among the newly reported HIV infection among MSM, the proportion of those who missed the follow-up services was 5.06% (6 037/119 358), and decreased dramatically, from 37.57% (1 261/3 356) to 0.84% (267/31 935) (trend χ(2)=103.43, P<0.01). In MSM population, the younger than 20-year olds (OR=1.30, 95%CI: 1.11-1.52), 20-year olds (OR=1.52, 95%CI: 1.36-1.69), 30-year olds (OR=1.22, 95%CI: 1.12-1.34), 40-year olds (OR=1.10, 95%CI: 1.01-1.20) were receiving less follow-up services than those 50-year olds. Those who had received either junior (OR=1.52, 95%CI: 1.37-1.69) or senior high school education (OR=1.35, 95%CI: 1.23-1.49) were receiving less follow-up service than those who were more educated. MSM with the following characteristics as unspecified occupation (OR=2.06, 95%CI: 1.49-2.87),unemployed (OR=1.54, 95%CI: 1.30-1.83), working in commercial service (OR=1.31, 95%CI: 1.15-1.49) or being student (OR=1.34, 95%CI: 1.18-1.52) were more difficult to be traced or followed than the cadres. Cases being identified on site (OR=2.99, 95%CI: 2.26-3.95) or under special investigation (OR=1.43, 95%CI: 1.29-1.59) had received less follow-up service than those being identified through voluntary counsel testing service. Floating population (OR=1.46, 95%CI: 1.28-1.66) were getting less follow-up service than local residents. Conclusions: The prevalence of those who had missed the follow-up services in the newly discovered MSM HIV cases declined dramatically. Among the MSM HIV cases, those having the following characteristics as: younger than 50-year old, with less school education, with unspecified occupation or unemployment, working in commercial service, being student, having history of incarceration, recruited from special investigation, and floating population were prone to miss the follow-up program, suggesting that the follow-up service should be targeting on these patients.


Subject(s)
Adolescent , Adult , Humans , Male , Middle Aged , Young Adult , Acquired Immunodeficiency Syndrome , China , Follow-Up Studies , HIV Infections/transmission , Homosexuality, Male/statistics & numerical data , Infections , Lost to Follow-Up , Patient Compliance , Prevalence , Sexual Behavior/ethnology
13.
Chinese Journal of Epidemiology ; (12): 619-624, 2018.
Article in Chinese | WPRIM | ID: wpr-738012

ABSTRACT

Objective: To understand prevalence and transmission of transmitted drug resistance (TDR) among HIV infected men who have sex with men (MSM) in Tianjin from 2014 to 2017. Methods: A total of 225 blood samples were collected from HIV infected MSM in Tianjin from 2014 to 2017. Pol gene fragments were obtained by viral RNA extraction and nested PCR amplification. Phylogenetic and drug resistance analyses were conducted. Results: A total of 205 samples were successfully sequenced and analyzed. Based on pol sequences, 53.2% (109/205), 28.8% (59/205), 10.2% (21/205), 4.9% (10/205) and 2.9% (6/205) of the samples were positive for HIV subtypes CRF01_AE, CRF07_BC, B, CRF55_01B and unique recombinant forms (URFs). Twenty transmission clusters, including 75 sequences, were identified and 62.5% (10/16) of sequences with TDR were in 5 clusters. The prevalence of TDR was 7.8% between 2014 and 2017. The annual prevalence rate increased from 3.9% (2/51) in 2014, 5.7% (3/53) in 2015, 9.6% (5/52) in 2016 to 12.2%(6/49) in 2017, the difference was not significant (χ(2)=2.504, P=0.127). CRF01_AE and B strains had high TDR prevalence (3.4%, 7/205) and (2.9%, 6/205), respectively. The TDR mutation was mainly NNRTIs, the TDR prevalence was 6.3% (13/205). In contract, the TDR prevalence of NRTIs and PIs were 1.5% (3/205) and 1.0% (2/205) respectively. Conclusion: Results from this study suggested that the prevalence of HIV-1 TDR strains in MSM was serious in Tianjin. It is necessary to take effective prevention and control measures.


Subject(s)
Humans , Male , China , Drug Resistance, Viral/genetics , Genes, pol , Genotype , HIV Infections/transmission , HIV Reverse Transcriptase/genetics , HIV Seropositivity/genetics , HIV-1/isolation & purification , Homosexuality, Male/statistics & numerical data , Mutation , Phylogeny , Polymerase Chain Reaction , Prevalence , RNA, Viral/genetics , pol Gene Products, Human Immunodeficiency Virus/genetics
14.
Chinese Journal of Epidemiology ; (12): 750-754, 2018.
Article in Chinese | WPRIM | ID: wpr-738040

ABSTRACT

Objective: To understand the characteristics of new-type drug consumption, sexual behaviors and the prevalence of HIV infection among male new-type drug users in Qingdao, Shandong province. Methods: A cross sectional survey was conducted from 2015 to 2016. Participants were recruited from MSM community-based organizations (CBO) and general community through snowball method, relying on volunteers and male peer educators who were on new-type drugs themselves. Face-to-face interview was carried to collect information on drug use and sexual behaviors. Blood samples were collected to test HIV, syphilis and HCV antibodies. Urine samples were collected to test the evidence of new-type drugs. Qualitative variables and quantitative variables were analyzed using Chi-square test/Fisher's exact test and Student's t-test respectively. Multivariate logistic regression was used to analyze related factors of binary variables. Results: A total of 1 034 newtype drug users were recruited, including 431 (41.7%) MSM population and 603 (58.3%) who were not MSM. Compared with the the group of people who were not MSM, people in the the MSM group were younger, unmarried and with higher level of education. The proportion of methamphetamine users were 49.7% (214/431) and 100.0% (603/603) among the groups of MSM or not MSM, respectively. People in the MSM group, 66.8% (288/431) used 5-Methoxy-N, N-diisopropyltryptamine (5-MeODIPT, "foxy" ) in the last six months. However, none from the not-MSM group ever used 5-MeO-DIPT. In the last six months, proportions of sharing new-type drugs with more than two people in the MSM or not groups were 87.9% (379/431) and 97.7% (588/602), respectively (χ(2)=39.84, P<0.01). Proportions of unprotected sexual behavior among the MSM or not groups were 47.5% (285/600) and 7.4% (32/430) respectively (χ(2)=190.10, P<0.01). The proportions of 'group sex' after using drugs among the two groups were 78.1% (335/429) and 5.5% (33/600) respectively (χ(2)=573.73, P<0.01). The prevalence rates of HIV, syphilis and HCV antibody positive among the MSM or not groups were 2.1% and 0.2%, 3.3% and 6.3%, 0.0% and 0.3%, respectively. Conclusion: The prevalence of sharing new-type drugs with more than two people was high among male new-type drug users in Qingdao city. Male new-type-drug-users who were MSM, presented both high prevalence of group sex and HIV infection, and with less condom use. Intervention measures towards this sub-population should be strengthened.


Subject(s)
Humans , Male , Community-Based Participatory Research , Cross-Sectional Studies , Drug Users/statistics & numerical data , HIV Infections/transmission , Hepatitis C Antibodies , Homosexuality, Male/statistics & numerical data , Methamphetamine/adverse effects , Prevalence , Risk-Taking , Safe Sex , Sexual Behavior , Sexual Partners , Substance-Related Disorders/epidemiology , Surveys and Questionnaires , Syphilis/epidemiology , Unsafe Sex
15.
Chinese Journal of Epidemiology ; (12): 937-942, 2018.
Article in Chinese | WPRIM | ID: wpr-738075

ABSTRACT

Objective: To evaluate the acceptability of oral quick HIV self-testing in men who have sex with men (MSM). Methods: From April 2013 to April 2014, MSM in Beijing and Nanning of China were recruited for an observational study including baseline survey and follow-up, including questionnaire survey, oral HIV self-testing and clinic-based HIV confirmation testing. The sensitivity and specificity of oral quick self-testing were evaluated through comparing the results of oral quick testing with blood testing. The acceptability and associated factors were evaluated by logistic model. Results: A total of 510 MSM were recruited at baseline survey and 279 accepted follow-up. The sensitivity of the oral self-test was 86.00% (43/50) and specificity was 98.23% (445/453) at baseline survey. At baseline survey, 78.63% (401/510) of the MSM showed willingness to use oral quick HIV self-testing. The associated factors included unprotected anal intercourse with a regular male partner in the past 6 months (aOR=0.30, 95%CI: 0.10-1.00) and preference of oral quick HIV self-testing (aOR=7.32, 95%CI: 1.61- 33.31). At baseline survey, 34.51% (176/510) of the MSM reported that oral quick HIV self-testing was the preferred testing method rather than blood testing, which was associated with their birth places-urban area. Conclusion: The acceptability of oral quick HIV self- testing in MSM in the two cities was high.


Subject(s)
Adolescent , Adult , Humans , Male , China/epidemiology , Cross-Sectional Studies , HIV Infections/prevention & control , Homosexuality, Male/statistics & numerical data , Patient Acceptance of Health Care , Patient Participation , Sexual and Gender Minorities
16.
Chinese Journal of Epidemiology ; (12): 948-953, 2018.
Article in Chinese | WPRIM | ID: wpr-738077

ABSTRACT

Objective: To assess the prevalence of HIV infection and related factors in men who have sex with men (MSM) living for ≤5 years in Wenzhou of Zhejiang province. Methods: MSM who were aged ≥16 years, had lived in Wenzhou for ≥3 months and had anal sex and/or oral sex with men in the last 12 months were recruited through respondent-driven sampling (RDS) from February to October in 2015. The MSM recruited completed a questionnaire for the information collection on socio-demographic characteristics, sexual behavior, awareness of HIV and related intervention, mental health status. Blood samples were collected from them for serological detection of HIV and syphilis antibodies. Software SPSS 18.0 was used to analyze HIV infection and related factors. Results: A total of 454 MSM were investigated, 108 of them (23.7%) were HIV positive. There were 267 MSM who lived in Wenzhou for ≤5 years, and 73 of them (27.3%) were HIV positive. Most of them were workers and commercial servants aged ≥25 years with personal monthly income <4 000 yuan and educational level of junior high school or below. According to multiple logistics regression analysis, age of 25-68 years old (OR=12.19, 95%CI: 2.29-65.02), heterosexual behavior in recent 6 months (OR=0.42, 95%CI: 0.18-0.96), believing it was possible to be infected with HIV (OR=0.06, 95%CI: 0.01-0.95), believing it was impossible to be infected with HIV (OR=0.03, 95%CI: 0.01-0.35) and syphilis status (OR=3.32, 95%CI: 1.05-10.52) were the risk factors associated with HIV infection. Conclusion: Compared with MSM who lived in Wenzhou for >5 years, MSM who lived in Wenzhou for ≤5 years had higher HIV infection rate and higher prevalence of risk behavior. It is necessary to conduct targeted intervention among them.


Subject(s)
Adult , Aged , Humans , Male , Middle Aged , HIV Infections/epidemiology , Homosexuality, Male/statistics & numerical data , Sexual Behavior , Surveys and Questionnaires
17.
Chinese Journal of Epidemiology ; (12): 977-982, 2018.
Article in Chinese | WPRIM | ID: wpr-738082

ABSTRACT

Objective: To understand the prevalence of drug resistance in treatment-naive HIV infected men who have sex with (MSM) in Guangzhou. Methods: HIV-1 RNA were extracted from the serum specimens of the MSM newly confirmed to be HIV-1 positive, living in Guangzhou and receiving no anti-viral therapy from 2008 to 2015. HIV-1 pol gene segments, including full protease and part reverse transcriptase, were amplified by nested reverse transcription polymerase chain reaction (nested-PCR) and sequenced by Sanger. Subsequently, the sequence data were submitted to Stanford University HIV Drug Resistance Database for drug resistance analysis. Results: Among 2 283 HIV infected MSM, HIV-1 pol gene segments were obtained from the serum samples of 1 986 HIV infected MSM aged 16-84 (30.18±8.24) years. Among them, the unmarried accounted for 74.17% (1 473/1 986), those of Han ethnic group accounted for 90.64% (1 800/1 986), those with education level of college or above accounted for 49.65% (986/1 986), those with education level of senior high school or secondary school accounted for 27.14% (539/1 986), those with education level of junior high school or below accounted for 20.89% (415/1 986). The distribution of subtypes was predominated by CRF07_BC (38.22%, 759/1 986) and CRF01_AE (34.49%, 685/1 986). The overall prevalence of drug resistance was 3.32% (66/1 986). The prevalence of resistance to protease inhibitors (PIs), nucleoside reverse transcriptase inhibitors (NRTIs) and non-nucleoside reverse transcriptase inhibitors (NNRTIs) were 1.36%(27/1 986), 0.65% (13/1 986) and 1.61% (32/1 986), respectively. Subtype B had higher resistance to PIs, NRTIs and NNRTIs and subtype CRF55_01B had highest resistance to NNRTIs compared with other subtypes. In subtype B, the resistant rates to D4T, EFV and NVP were highest (all 4.17%, 5/120), followed by those to NFV, AZT and RPV (all 3.33%, 4/120). In subtype CRF55_01B, the resistant rates to EFV and NVP were highest (all 5.50%, 16/291), followed by those to ETR and RPV (all 5.15%, 15/291). Conclusions: The prevalence of drug resistance in treatment-naive HIV infected MSM in Guangzhou remained at low level and current antiretroviral drugs are generally effective. However, subtype B and CRF55_01B have higher drug resistance.


Subject(s)
Adolescent , Adult , Child , Humans , Male , Young Adult , Drug Resistance, Viral , Genotype , HIV Infections/ethnology , Homosexuality, Male/statistics & numerical data , Phylogeny , Prevalence , RNA, Viral/genetics , Sexual and Gender Minorities
18.
Chinese Journal of Epidemiology ; (12): 1228-1233, 2018.
Article in Chinese | WPRIM | ID: wpr-738128

ABSTRACT

Objective: To evaluate the behavior intervention program on men who have sex with men (MSM) in Tianjin. Methods: From April 2013 to September 2017, MSM were enrolled from MSM gathering places and through mobile internet to establish an open prospective cohort. Interventions were conducted in every follow-up meeting, while the changes of behaviors and HIV infection and syphilis incidences in the MSM before and after intervention were compared. Results: A total of 1 822 MSM were interviewed at baseline survey, with 1 007 eligible MSM were enrolled in the cohort. A total of 39 new cases of HIV infection were reported, and the cumulative observation time on cohort follow-up was 2 216.96 person-year, with the HIV incidence rate as 1.76 per 100 person-years. Among them, 934 MSM were sero-negative for syphilis in baseline survey. A total of 100 new cases of syphilis were reported, and the cumulative observation time of cohort follow-up was 1 959.94 person-year, the syphilis incidence rate was 5.10 per 100 person-years. With health education and intervention conducted, the awareness rate of AIDS related knowledge for MSM increased. Though the rate of anal sex increased after intervention, the rate of condom use in anal sex increased, too. The rate of condom use decreased after receiving more than 3 interventions. Data from the multivariate GEE analysis indicated that protective factors might be as follows: education level of college and above (aOR=0.81, 95%CI: 0.68-0.98), awareness of AIDS related knowledge (aOR=0.52, 95%CI: 0.36-0.75), ever receiving condom promotion and distribution in the past six months (aOR=0.60, 95%CI: 0.49-0.74), being recruited from mobile internet (aOR=0.85, 95%CI: 0.73-1.00) and times of cumulative intervention: one time (aOR=0.55, 95%CI: 0.45-0.66), two times (aOR=0.38, 95%CI: 0.30-0.49), three times (aOR=0.26, 95%CI: 0.20-0.35), four times and above (aOR=0.24, 95%CI: 0.17-0.33). Diagnoses of STDs in the past six months (aOR=1.43, 95%CI: 1.06-1.96), using rush-poppers (aOR=1.22, 95%CI: 1.02-1.47) might be risk factors. Conclusions: After continuous behavior intervention, the incidence of HIV infection and syphilis were at a low level in the MSM cohort in Tianjin. Their awareness rate of AIDS related knowledge and the rate of condom use increased. But there are still many risk factors influencing the unprotected anal sex in MSM. We should continuously carry out behavioral intervention programs to prevent unprotected anal sex among MSM.


Subject(s)
Humans , Male , Behavior Therapy , China/epidemiology , Follow-Up Studies , HIV Infections/transmission , Homosexuality, Male/statistics & numerical data , Incidence , Prospective Studies , Risk Factors , Safe Sex
19.
Chinese Journal of Epidemiology ; (12): 1443-1448, 2018.
Article in Chinese | WPRIM | ID: wpr-738165

ABSTRACT

Objective: To assess the prevalence of blood donation and associated factors in men who have sex with men (MSM) in China. Methods: Our observational study was conducted between January and August, 2017 in 3 cities: Guangzhou, Shenzhen and Wuxi. Eligible participants were MSM (≥18 years old) who had either ≥2 male sex partners or unprotected anal sex with casual partners, or had been diagnosed with STI in the past 6 months. A self-completed tablet-based questionnaire was used to collect the information about MSM's socio-demographic characteristics, sexual behaviors and blood donation history. Results: A total of 603 MSM were enrolled in our study, including 302 in Guangzhou, 152 in Shenzhen and 149 in Wuxi, with a mean age of 27.9 years (SD=7.8). Overall, 29.2% (176/603) of the MSM reported a history of blood donation, and 33.1% (100/302)in Guangzhou, 27.6% (42/152) in Shenzhen and 22.8% (34/149) in Wuxi, the differences were not significant (χ(2)=6.421, P=0.093). Multivariate logistic regression analysis indicated that MSM had ever tested for HIV for ≥2 times in the past 12 months (vs. MSM tested for HIV one time, aOR=1.49, 95%CI: 1.08-2.19) or who had ever used gay dating app (vs. MSM who not used gay dating app, aOR=2.13, 95%CI: 1.12-4.44) were more likely to donate blood. Conclusions: Blood donation was common in MSM in China. Health education about blood donation in MSM should be strengthened to ensure the blood safety.


Subject(s)
Adolescent , Adult , Humans , Male , Blood Donors , China , Cities , Cross-Sectional Studies , Homosexuality, Male/statistics & numerical data , Sexual Behavior , Sexual Partners , Surveys and Questionnaires
20.
Chinese Journal of Epidemiology ; (12): 1576-1581, 2018.
Article in Chinese | WPRIM | ID: wpr-738189

ABSTRACT

Objective: To evaluate the randomness and representativeness of respondent- driven sampling (RDS) tool in conducting the investigation in MSM population, in Beijing, 2017. Methods: RDS tool was used to recruit MSM population for a face-to-face interview with structured questionnaire and serological tests. Results: A total of 600 MSM people were sampled and interviewed. The median number of personal network of seeds was 10, which was higher than other MSM people recruited. The numbers of recruitments by wave presented a skewed positive distribution and the highest number was in the fourth wave. It was also dramatically varied from different seeds. Three seeds had the longest chains and had recruited 184, 113 and 92 MSM people, respectively. In contrast, five seeds recruited less than 10 MSM people. Two college students were the most non-generative seeds and each recruited only 1 MSM person. After five to nine waves of sampling, the major demographic characteristics reached equilibrium. Both convergence and bottleneck plots of major demographic characteristics reached convergence, although the plots on marriage and education did not. The homophiles of characteristics were all closed to 1, except for education. The HIV positive rate appeared as 7.9% (95%CI: 4.4%-11.4%) . Conclusions: Results from this study showed that RDS could be used as a feasible sampling method for the study on MSM population with major demographic characteristics reached equilibrium. The process of recruitment appeared controllable and reasonable, showing that this could represent the MSM population in Beijing, in some degree.


Subject(s)
Humans , Male , Beijing/epidemiology , HIV Infections/epidemiology , Homosexuality, Male/statistics & numerical data , Outcome Assessment, Health Care/statistics & numerical data , Patient Selection , Prevalence , Sampling Studies , Sexual and Gender Minorities , Surveys and Questionnaires
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