Características clínicas y epidemiológicas de la viruela del mono en una serie de casos tratados en un establecimiento de salud del Perú

La infección por el virus de la viruela del mono es una zoonosis producida por un virus tipo DNA, del género orthopoxvirus. En este reporte se describe una serie de 12 casos cuya media de edad fue 36 años, con antecedente de sexo entre hombres en el 66%; previo al inicio de los síntomas el 50% manifestó haber tenido relaciones sexuales con desconocido. Los síntomas prodrómicos se presentaron en el 90%, entre 1 y 4 días caracterizados por fiebre, cefalea, mialgia. Las lesiones dérmicas fueron pústulas-vesículas, pápulas, costras localizadas principalmente en extremidades, cara-tórax y genitales. Todos los casos tuvieron una evolución favorable.

Monkeypox virus infection is a zoonosis caused by a DNA-like virus of the orthopoxvirus. This report describes a series of 12 cases whose mean age was 36 years, with a history of sex among men in 66%; prior to the onset of symptoms, 50% said they had had sex with a stranger. Prodromal symptoms occurred in 90%, between 1 and 4 days characterized by fever, headache, mialgia. The dermal lesions were pustules-vesicles, papules, scabs located mainly on extremities, face-thorax and genitals. All cases had a favorable evolution.

Parental supervision and sexual behavior among Brazilian adolescents / Supervisão dos pais e comportamento sexual entre adolescentes brasileiros

ABSTRACT Objective: to evaluate the association between parental supervision and sexual behaviors among Brazilian adolescents. Methods: Cross-sectional study with data from 102,072 adolescents who responded to the National Adolescent School-based Health Survey. We estimated the prevalence of sexual behaviors (initiation, use of condoms, contraception, and number of partners). Parental supervision was evaluated using a score considering five indicators. We calculated prevalence ratios (PR) adjusted by age and sex in order to estimate the association between parental supervision score and sexual behaviors of adolescents. Results: Prevalence of risky sexual behavior for adolescents with minimum and maximum parental supervision were: sexual initiation (min.: 58.0%; max.: 20.1%), condom use in the last sexual intercourse (min.: 50.9%; max.: 80.2%), use of contraceptives (min.: 40.8; max.: 49.1%), and mean number of partners (min.: 3.25; max.: 2.88). Parental supervision was greater among girls. Those with higher supervision scores had higher prevalence of condom use in the first and last sexual intercourse and of contraceptive methods, and a smaller mean number of partners, even after adjustments for sex and age. Conclusion: The greater the parental supervision, the better the sexual behavior for both sexes, although supervision seems to occur differently between girls and boys. These findings point to the role of the family in providing adolescents with monitoring, along with dialogue and affection, conditions that encourage healthy and risk-free sexual behavior.

RESUMO Objetivo: Avaliar a associação entre a supervisão dos pais e comportamentos sexuais entre os adolescentes brasileiros. Métodos: Estudo transversal com dados de 102.072 estudantes do 9º ano que responderam à Pesquisa Nacional de Saúde do Escolar de 2015. Estimou-se a prevalência dos comportamentos sexuais (iniciação, uso de preservativo, contracepção e número de parcerias). A supervisão dos pais foi avaliada por meio de escore formado por cinco indicadores. Foram calculadas razões de prevalência ajustadas por sexo e idade para a análise das relações existentes entre o escore de supervisão dos pais e os comportamentos sexuais de adolescentes. Resultados: As prevalências de comportamentos sexuais em adolescentes com mínima e máxima supervisão parental foram: iniciação sexual (mín.: 58,0%; máx.: 20,1%), uso do preservativo na última relação sexual (mín.: 50,9%; máx.: 80,2%), de contraceptivos (mín.: 40,8; máx.: 49,1%) e número de parceiros (mín.: 3,25; máx.: 2,88). A supervisão parental apresentou maior magnitude no sexo feminino. Aqueles com maior escore de supervisão apresentaram maiores prevalências do uso de preservativos na primeira e última relação sexual, de métodos contraceptivos e menor média do número de parceiros, mesmo após ajustes por sexo e idade. Conclusão: Quanto maior a supervisão dos pais, melhores os comportamentos sexuais, para ambos os sexos, apesar de a supervisão ocorrer de forma diferenciada entre os sexos. Esses achados apontam o papel da família em proporcionar aos adolescentes monitoramento simultâneo ao diálogo e ao afeto, condição estimuladora do comportamento sexual saudável e livre de riscos.

Panorama of risky sexual behaviors in the Brazilian adult population - PNS 2019 / Panorama dos comportamentos sexuais de risco na população adulta brasileira - PNS 2019

ABSTRACT OBJECTIVE To describe the risky sexual behaviors of Brazilian adults according to socioeconomic, demographic, and regional characteristics. METHODS Data from the 2019 National Health Survey, referring to the population aged 18 years or older, were analyzed. Risky sexual behaviors were considered: early sexual initiation, before the age of 15 years, and nonuse of condoms in the last sexual intercourse. Prevalence and respective confidence intervals were calculated for the subgroups of interest. RESULTS Early sexual initiation among adult individuals was 24% among men and 11% among women, being higher among young people with lower levels of education and household income. The nonuse of condoms was higher among married/cohabiting partners, no schooling or with some elementary school, and among older people. The prevalence of nonuse of condoms among married/cohabiting partners was the same in both sexes (75%). However, among non-cohabiting partners, gender disparity was relevant, as 39.1% of women did not use condoms in the last sexual intercourse, while among men this result was 26.9%. CONCLUSIONS Higher prevalence of early sexual initiation for younger generations is noteworthy, especially among women. Concerning the nonuse of condoms, there are important gender disparities in the group of non-cohabiting partners, in addition to the high prevalence among older people, which should be considered in the formulation of public policies. The results of the present study are extremely relevant for understanding the adult population currently more vulnerable to sexually transmitted infections, after over five years without official statistics on this matter at the national level.

RESUMO OBJETIVO Descrever os comportamentos sexuais de risco dos adultos brasileiros segundo características socioeconômicas, demográficas e regionais. MÉTODOS Foram analisados dados da Pesquisa Nacional de Saúde 2019, referente à população de 18 anos de idade ou mais. Considerou-se como comportamentos sexuais de risco: a iniciação sexual precoce, antes dos 15 anos, e o não uso de preservativo na última relação sexual. Foram calculadas as prevalências e respectivos intervalos de confiança para os subgrupos de interesse. RESULTADOS A iniciação sexual precoce entre indivíduos adultos foi de 24% entre os homens e 11% entre as mulheres, sendo mais alta entre jovens com menores níveis de instrução e rendimento domiciliar. O não uso de preservativo se mostrou maior entre os casados/coabitantes, sem instrução ou com nível fundamental incompleto, e entre os mais velhos. A prevalência do não uso de preservativo entre casados/coabitantes foi igual em ambos os sexos (75%). No entanto, entre os não coabitantes, a disparidade entre os sexos se mostrou relevante uma vez que 39,1% das mulheres não usaram preservativo na última relação sexual, enquanto entre os homens esse resultado foi de 26,9%. CONCLUSÃO Nota-se, especialmente entre as mulheres, maiores prevalências de iniciação sexual precoce para as gerações mais novas. No que se refere ao não uso de preservativo, há disparidades de sexo importantes no grupo dos não coabitantes, além da alta prevalência entre os mais velhos, que devem ser consideradas na elaboração das políticas públicas. Os resultados do presente estudo são extremamente relevantes para compreensão da população adulta atualmente mais vulnerável às infecções sexualmente transmissíveis, após mais de cinco anos sem estatísticas oficiais a respeito em âmbito nacional.

Condom use and non-use among transgender women in Colombia: a qualitative analysis based on the IMB model / El uso y no uso del condón en mujeres trans de Colombia: un análisis cualitativo desde el modelo IMB

ABSTRACT OBJECTIVE Review the reasons for condom use and non-use among transgender women in Colombia based on the information, motivation and behavioral skills (IMB) model. METHOD Qualitative study in which an iterative process analysis was carried out. A focal group participated in person, and in-depth interviews were conducted virtually. RESULTS First study carried out in Colombia on condom use among transgender women under the IMB model. The information component finds that traditional sexual education does not have a positive impact. Regarding motivational aspects, the importance of family support and follow-up and community-based organizations to motivate sexual health care and condom use is highlighted. Regarding behavioral skills, it was found that distrust towards sexual partners and the acquisition of condoms promote their use. CONCLUSIONS It is important to create spaces for sexual education delivered by and for the LGBTIQ population, followed by the medical knowledge of health centers, to have positive impacts on the sexual health of transgender women; studies with sexual partners of transgender women are encouraged in order to know the reasons why they request the non-use of condoms.

RESUMEN OBJETIVO Analizar las razones del uso y no uso del condón que tienen las mujeres trans de Colombia desde el modelo de información, motivación y habilidades conductuales (IMB por sus siglas en inglés). MÉTODO Estudio cualitativo en el cual se llevó a cabo el análisis de proceso iterativo. Se realizó un grupo focal de manera presencial y entrevistas a profundidad de manera virtual. RESULTADOS Primer estudio llevado a cabo en Colombia sobre el uso del preservativo en mujeres trans bajo el modelo IMB. En el componente información se identifica que la educación sexual tradicional no tiene un impacto positivo. Respecto a lo motivacional, se destaca la importancia del apoyo y acompañamiento familiar y de las organizaciones de base comunitaria para motivar al cuidado de la salud sexual y el uso del preservativo. Con relación a las habilidades conductuales, se analiza que la desconfianza hacia la pareja sexual y la adquisición de los preservativos promueven su uso. CONCLUSIONES Se hace importante la creación de espacios de educación sexual realizados por y para la población LGBTIQ, acompañados por el saber médico de los centros de salud, para impactar de manera positiva la salud sexual de mujeres trans; se motiva a la realización de estudios con parejas sexuales de mujeres trans para conocer las razones por las cuales solicitan el no uso del preservativo.

Analysis of high-risk behaviors related to HIV infection in men who have sex with men recruited by different methods / 中华皮肤科杂志

Objective:To analyze high-risk behaviors related to HIV infection in men who have sex with men (MSM) recruited by different methods in Zhenjiang city, and to provide a reference for precise prevention and control of acquired immunodeficiency syndrome (AIDS) .Methods:From April to June in 2020, MSM in Zhenjiang city were recruited as research subjects through the center for disease control and prevention (CDC) voluntary counseling and testing (VCT) clinic and community-based organizations (CBOs) . Information such as demographic characteristics, drug abuse, HIV testing history and high-risk sexual behavior were collected through a unified questionnaire survey. Chi-square test or Fisher′s exact test was used to analyze differences in relevant characteristics of MSM recruited by different methods.Results:A total of 641 MSM were recruited by the two methods, including 442 (68.95%) recruited from CBOs and 199 (31.05%) from CDC; the proportion of MSM aged under 20 years was significantly higher in the CBO group (6.56%) than in the CDC group (1.01%, χ2 = 9.20, P = 0.002) ; the proportions of MSM receiving health education information on potential hazards of drug use from professional health institutions and new network media were significantly higher in the CDC group (7.54% [15/199], 16.58% [33/199], respectively) than in the CBO group (3.39% [15/442], χ2 = 5.28, P = 0.022; 9.50% [42/442], χ2 = 6.66, P = 0.010) . In terms of characteristics of sexual behavior, the CBO group showed significantly increased proportions of individuals having group sex (25.21%, 30 cases) and those having unprotected sexual intercourse with women (47.51%, 210 cases) compared with the CDC group (7.50% [6 cases], χ2 = 10.13, P = 0.001; 27.64% [55 cases], χ2 = 22.35, P < 0.001, respectively) , but significantly decreased proportions of heterosexuals (2.04%, 9 cases) , individuals unknowing about the HIV status of sexual partners (22.40%, 99 cases) and those having unprotected anal sex with men (39.82%, 176 cases) compared with the CDC group (6.53% [13 cases], χ2 = 8.37, P = 0.004; 39.70% [79 cases], χ2 = 20.48, P < 0.001; 57.29% [114 cases], χ2 = 16.90, P < 0.001, respectively) . Compared with the CDC group, the CBO group showed significantly decreased proportions of individuals ever having an HIV test (74.43% [329 cases] vs. 80.90% [161 cases], χ2 = 3.19, P = 0.074) and those getting the latest HIV test from CDC (23.10% [76 cases] vs. 57.14% [92 cases], χ2 = 99.41, P < 0.001) , as well as decreased prevalence of HIV infection (5.20% [23 cases] vs. 13.07% [26 cases], χ2 = 21.85, P < 0.001) . Conclusions:The MSM recruited from CBO and CDC are complementary in terms of demographics and behaviors, and can represent the general MSM population. Specific prevention and control measures for AIDS should be taken according to different characteristics of the MSM population.

Determinación de la incidencia de infecciones de transmisión sexual en la Consulta Infanto-Juvenil / Determination of Incidence of sexually transmitted diseases in Child and Adolescent Consultation

RESUMEN Fundamento: las infecciones de transmisión sexual afectan en especial a la población adolescente dada su vulnerabilidad biológica y psicológica, tienen consecuencias severas en la salud sexual y reproductiva. Objetivo: determinar la incidencia de infecciones de transmisión sexual en la Consulta Infanto-Juvenil. Métodos: se realizó un estudio observacional, descriptivo y transversal, cuyo universo fueron las 50 pacientes con infecciones de transmisión sexual que asistieron a Consulta Infanto-Juvenil del Policlínico de Especialidades Pediátricas de la provincia Camagüey, durante el período de estudio. Las variables estudiadas fueron: edad, estado civil, tipo de infección de transmisión sexual, asociación con otras, orientación sexual y factores predisponentes, los que comprendían: conducta sexual de riesgo, cervicitis y antecedentes de otras infecciones de transmisión sexual. La información obtenida fue procesada mediante el programa estadístico SPSS para Microsoft Excel 2017. Los métodos empleados fueron estadística descriptiva de distribución de frecuencias absolutas y relativas. Los resultados se expusieron en tablas. Resultados: predominaron las pacientes de 13 a 15 años de edad, solteras y heterosexuales. La candidiasis vaginal fue la afección más diagnosticada. Casi la mitad no presentaban otras infecciones de transmisión sexual y el condiloma acuminado fue la más asociada. Los factores predisponentes que prevalecieron fueron: antecedentes de infección de transmisión sexual y conducta sexual de riesgo, en esta última predominaron las relaciones sexuales tempranas y cambio frecuente de pareja. Conclusiones: los resultados del estudio evidencian la necesidad de realizar acciones educativas para que los adolescentes puedan vivir una sexualidad sana.

ABSTRACT Background: sexually transmitted infections are one of the most risks among young population due to their biological and psychological vulnerability. They have deep consequences in sexual and reproductive health. Objective: to determine the incidence of sexually transmitted infections in child and adolescent consultation. Methods: an observational, descriptive, transversal study was conducted whose universe were all patients with diagnosis of sexually transmitted infections who attended child and adolescent consultation of pediatric specialty clinic, Camagüey, from September 1st, 2017 to August 31st, 2018, they were 50. The variables studied were: age groups, marital status, type of sexually transmitted infection, association with other sexually transmitted infections, predisposed factors for acquisition (sexual risk behavior, cervicitis and antecedents of former sexually transmitted infections), and sexual preferences. The information obtained was processed using the statistical package SPSS for Microsoft Excel 2017. The methods used were descriptive statistics distribution of absolute and relative frequencies. The results were presented in tables. Results: the most affected age group was between 13 to 15 years, singles and heterosexual. Vaginal candidiasis was predominated, followed by genital warts. About half of the patients have not transmitted infections consociated. Genital warts were the most consociated. The risk factors that prevailed were antecedents of former sexually transmitted infections and sexually risky sexual behavior. In the last one predominated early sexual life and frequent change of partner. Conclusions: these results show the necessity of sexual education for the adolescents to have a healthy sexuality.

Conhecimento de adolescentes e jovens sobre questões relacionadas ao sexo, em uma escola pública de Monte Alegre do Piauí-PI / Knowledge of adolescents and young people on issues related to sex, in a public school in Monte Alegre do Piauí-PI

O presente estudo objetivou avaliar o conhecimento de adolescentes e jovens sobre questões relacionadas ao sexo, na cidade de Monte Alegre do Piauí (PI). Para isso, utilizou-se o método descritivo quantitativo por meio de questionário semiestruturado aplicado a 81 estudantes, com idade entre 16 a 23 anos, da escola Ginásio Estadual Senador Chagas Rodrigues. A coleta de dados evidenciou que 97,5% (n=79) dos participantes já haviam praticado sexo, tendo iniciado com idade média de 15,5 anos. O preservativo foi o método contraceptivo mais conhecido, no entanto, observou-se que os adolescentes e jovens não se preveniram em todas as relações sexuais, mesmo cientes das consequências da não prevenção. Percebeu-se fragilidade dialógica entre os indivíduos, família e escola; a conversação sobre o assunto no âmbito familiar e escolar ainda era receosa e pouco atrativa. Como conclusão deste estudo, sugere-se como necessário a implementação eficaz de políticas públicas que envolvam de forma educativa a escola, os jovens, seus familiares e amigos.

This present study aimed to assess the knowledge of adolescents and young people on issues related to sex, in the city of Monte Alegre do Piauí (PI). For this, the quantitative descriptive method was used through a semi-structured questionnaire applied to 81 students, aged between 16 and 23 years old, from the school Ginásio Estadual Senador Chagas Rodrigues. The data collection showed that 97.5% (n = 79) of the participants had already had sex, having started with an average age of 15,5 years. The condom was the most known contraceptive method; however, it was observed that adolescents and young people did not prevent themselves in all sexual intercourse, even though they were aware of the consequences of non-prevention. Dialogical fragility was noticed among individuals, family and school; the conversation on the subject in the family and school environment was still fearful and unattractive. As a conclusion of this study, it is suggested as necessary the effective implementation of public policies that involve the school, young people, their families and friends in an educational way.

Práticas de sexo com animais entre homens atendidos em centros de referência para infecções sexualmente transmissíveis (IST) e Aids do nordeste brasileiro: prevalência, relação com IST e fatores associados / Sex with animals among men treated at reference centers for sexually transmitted infections and AIDS in northeastern Brazil: prevalence, relationship with STIs and associated factors

Introdução: Estudos anteriores revelaram associação entre práticas sexuais com animais (SWA) e o autorrelato de infecções sexualmente transmissíveis (IST) além de altas taxas desse comportamento sexual entre homens do nordeste brasileiro. Objetivo: Investigar prevalência de SWA, relação com infecções sexualmente transmissíveis (IST) e seus fatores associados entre homens atendidos em CR-IST/AIDS de Juazeiro-BA e Petrolina-PE nos anos de 2018 e 2019. Metodologia: Trata-se de um estudo transversal que entrevistou aleatoriamente 400 homens atendidos em dois CR-IST/AIDS de municípios do nordeste brasileiro nos anos de 2018 e 2019. A coleta de dados foi realizada através de questionário estruturado com questões sobre dados sociodemográficos, uso de drogas, sexualidade, IST/AIDS, SWA, condição atual de região anogenital e resultado de testagens sorológicas para HIV, sífilis, hepatites B e C. Para o tratamento estatístico dos dados utilizamos o teste qui-quadrado, teste T de student, medidas resumo de posição e dispersão, frequências absoluta e relativa. Modelos de regressão logística simples e múltiplo buscaram associações entre SWA e variáveis relacionadas aos dados sociodemográficos, clínicos, sexuais e relacionados às IST. Valores de odds ratio (OR), intervalo de confiança (IC) de 95% e nível de significância de 5% foram considerados. O software IBM SPSS versão 24 foi utilizado na análise dos dados. Resultados: A prevalência de SWA foi de 15% (n=60) na amostra e 15,47% (n=37) entre os homens portadores de IST (p=0,853). SWA perdurou, em média, por 4 anos (DP: 7,4), entre os 12,3 (DP: 3,84) e 16,5 (DP: 7,84) anos de idade, sendo último episódio há mais de 20 anos (80%). SWA ocorreu com fêmeas (93,3%), geralmente asininos ou muares (76,6%), enquanto os homens estavam sozinhos com o animal (58,3%), em sexo penetrativo (96,7%), vaginal (96,7%), sem preservativo (95,0%), com animais distintos a cada episódio (53,3%). Análise univariada identificou associação entre SWA e o aumento da idade (p<0.0001), histórico de residência em área rural (p<0.0001) com permanecia superior a 12 anos (p=0,008), casados (p=0,008) ou viúvos/separados (p=0,041), heterossexuais (p=0,019), com menos de 7 anos de estudo (p<0.0001), católicos (p=0,014), ex usuário de bebida alcoólica (p=0,020) e cigarro (p<0.0001), portadores de hepatite B (p=0,037), com históricos de IST (p=0,001) e de relações sexuais com profissionais do sexo (p<0.0001). Idade, histórico de residência em área rural e atividade sexual com profissionais do sexo mantiveram associação na análise multivariada. Conclusão: SWA está associada a alguns aspectos sociodemográficos e comportamentais capazes de ampliar a vulnerabilidade às IST. A relação entre SWA e hepatite B pode fornecer subsídios importantes para estudos futuros que investigam a possibilidade de transmissão humano-animal. Ações intersetoriais e estratégias para a redução de danos devem ser consideradas para assegurar/promover a saúde sexual dos envolvidos.

Introducion: Previous studies have revealed an association between sexual practices with animals (SWA) and self-reported sexually transmitted infections (STIs) in addition to high rates of this sexual behavior among men in northeastern Brazil. Objective: To investigate the prevalence of SWA, relationship with sexually transmitted infections (STI), and its associated factors among men treated at CR-IST/AIDS in Juazeiro-BA and Petrolina-PE in the years 2018 and 2019. Metodology: This is a cross-sectional study that randomly interviewed 400 men assisted in two CR-IST/AIDS in northeastern Brazilian municipalities in the years 2018 and 2019. Data collection was performed through a structured questionnaire with questions on sociodemographic data, use of drugs, sexuality, STI/AIDS, SWA, the current condition of the anogenital region, and results of serological tests for HIV, syphilis, hepatitis B and C. For the statistical treatment of the data, we used the chi-square test, Student's T-test, summary measures of position and dispersion, absolute and relative frequencies. Simple and multiple logistic regression models looked for associations between SWA and variables related to sociodemographic, clinical, sexual, and STI-related data. Odds ratio (OR), 95% confidence interval (CI), and 5% significance level were considered. The IBM SPSS version 24 software was used in the data analysis. Results: The prevalence of SWA was 15% (n=60) in the sample and 15.47% (n=37) among men with STIs (p=0.853). SWA lasted, on average, for 4 years (SD: 7.4), between 12.3 (SD: 3.84) and 16.5 (SD: 7.84) years old, with the last episode being more than 20 years ago(80%). SWA occurred with females (93.3%), usually, donkeys or mules (76.6%), while men were alone with the animal (58.3%), in penetrative sex (96.7%), vaginal (96 .7%), without condoms (95.0%), with different animals in each episode (53.3%). Univariate analysis identified an association between SWA and increasing age (p<0.0001), history of residence in a rural area (p<0.0001) with staying longer than 12 years (p=0.008), married (p=0.008) or widowed/separated (p=0.041), heterosexuals (p=0.019), with less than 7 years of education (p<0.0001), Catholics (p=0.014), former alcoholic beverage user (p=0.020) and cigarette (p<0.0001) , patients with hepatitis B (p=0.037), with a history of STIs (p=0.001) and sexual relations with sex workers (p<0.0001). Age, history of residence in a rural area, and sexual activity with sex workers maintained an association in the multivariate analysis. Conclusion: SWA is associated with some sociodemographic and behavioral aspects capable of increasing vulnerability to STIs. The relationship between SWA and hepatitis B may provide important support for future studies that investigate the possibility of human-animal transmission. Intersectoral actions and harm reduction strategies should be considered to ensure/promote the sexual health of those involved

Epidemiología de la sífilis con enfoque territorial: caso del Hospital de La Serena, años 2015-2017 / Epidemiological features of syphilis diagnosed at a clinic of sexually transmitted diseases

Background: Syphilis continues to be a common sexually transmitted disease. Aim: To describe the epidemiologic features of patients with syphilis consulting in a Chilean sexually transmitted diseases clinic. Material and Methods: Review of medical records of patients with positive serology for syphilis, who attended a unit of sexually transmitted diseases between 2015 and 2017. Results: Of 266 cases, 61% were male and 74% were aged between 20 and 49 years. The highest incidence was observed in males aged between 20 and 30 years. Eighty five percent of cases were diagnosed in latent phases, 10% of the cases had a co-infection with HIV and 18%, a history of other sexually transmitted disease. The rate of coinfection was significantly higher in men than in women (78 and 28%, respectively; p < 0.01). Only 6.4% reported always using a condom. Men used it with higher frequency than women (72 and 28% respectively; p < 0.01). A low adherence to treatment and faulty follow-up and treatment of sexual contacts was observed. Twenty five percent of women diagnosed with syphilis were pregnant and 27% of them had a premature birth, with one neonatal death. Conclusions: A high incidence of syphilis was observed, especially in men of younger ages. The diagnosis is delayed, the treatment of sexual contacts and the use of condoms are uncommon. Although the treatment of pregnant women is appropriated, some perinatal complications are observed.

Application of the "syndemics" theory to explain unprotected sex and transactional sex: A cross- sectional study in men who have sex with men (MSM), transgender women, and non-MSM in Colombia / Aplicación de la teoría de la "sindemia" para entender el sexo sin protección y el sexo comercial: un estudio transversal en hombres que tienen sexo con hombres (HSH), mujeres transexuales y hombres que no tienen sexo con hombres en Colombia

Introduction: Men who have sex with men (MSM) and transgender women (TW) in Colombia are highly affected by HIV. To improve understanding of the role of HIV risk behaviors in HIV acquisition, we used the syndemic framework, a useful concept to inform prevention efforts. Objective: To examine the effect of four psychosocial conditions, namely, forced sex, history of childhood sexual abuse, frequent alcohol use, and illicit drug use on unprotected sex and the synergistic effects ("syndemic" effects) of these conditions on HIV risk behavior. Materials and methods: We enrolled a total of 812 males (54.7% men who have sex with men, MSM; 7.3% transgender women, and 38% non-MSM). The participants were recruited from neighborhoods of low socioeconomic status through free HIV-counseling and -testing campaigns. We performed Poisson regression analysis to test the associations and interactions between the four psychosocial conditions and unprotected sex with regular, occasional, and transactional partners. To test the "syndemic" model, we assessed additive and multiplicative interactions. Results:The prevalence of any psychosocial condition was 94.9% in transgender women, 60.1% in MSM, and 72.2% in non-MSM. A higher likelihood of transactional sex was associated in MSM (prevalence ratio (PR)=7.41, p<0.001) and non-MSM (PR=2.18, p< 0.001) with three or all four conditions compared to those with one condition. Additive interactions were present for all combinations of psychosocial problems on transactional sex in MSM. No cumulative effect or additive interaction was observed in transgender women. Conclusions: Our study highlights the need for bundled mental health programs addressing childhood sexual abuse, illicit drug use, and frequent alcohol use with other HIV prevention programs.

Introducción. Los hombres que tienen sexo con hombres (HSH), y las mujeres transgenero (MT) en Colombia continuan estando a mayor riesgo de VIH. Para entender como los comportamientos se asocian al VIH, se uso la teoria de la sindemia, la cual se ha considerado muy útil en el desarrollo de estrategias de prevención. Objetivo. Examinar el efecto de cuatro afecciones psicosociales, a saber: historia de sexo forzado, historia de abuso sexual infantil, consumo frecuente de alcohol y consumo de drogas ilícitas en las relaciones sexuales sin protección, así como los efectos sinérgicos (efectos "sindémicos") de estas afecciones sobre el comportamiento de riesgo para HIV. Materiales y métodos. Se hizo un estudio transversal que incluyó 812 participantes (hombres que tienen sexo con hombres, HSH: 54,7 %; mujeres transgénero: 7,3 % y hombres que no tenían sexo con otros hombres: 38 %). Los participantes se reclutaron en barrios de estratos socioeconómicos bajos a través de campañas gratuitas de asesoramiento y pruebas de HIV. Se hizo un análisis de regresión de Poisson para probar las asociaciones e interacciones entre las cuatro condiciones psicosociales y las relaciones sexuales sin protección con parejas regulares, ocasionales y comerciales. Para probar el modelo "sindémico" se evaluaron las interacciones aditivas y multiplicativas. Resultados. La prevalencia de cualquiera de las condiciones psicosociales fue de 94,9 % en mujeres transexuales, de 60,1 % en HSH y de 72,2 % en hombres que no tienen sexo con hombres. Se encontró una mayor probabilidad de tener sexo comercial en los HSH (razón de prevalencia (RP)=7,41, p<0,001) y en los que no tienen sexo con otros hombres (RP=2.18, p<0,001) con tres de las condiciones psicosociales, o con las cuatro, en comparación con aquellos con una sola condición. Las interacciones aditivas se registraron entre todas las combinaciones de problemas psicosociales con el sexo comercial en los HSH. No se observó un efecto acumulativo ni interacciones en mujeres transexuales. Conclusiones. El estudio resalta la necesidad de combinar programas de salud mental que aborden el abuso sexual infantil, el abuso de drogas y el consumo frecuente de alcohol con otros programas de prevención del HIV.

Risky sexual behavior and associated factors in undergraduate students in a city in Southern Brazil / Comportamento sexual de risco e fatores associados em universitários de uma cidade do Sul do Brasil

ABSTRACT OBJECTIVE To describe the sexual behavior of freshmen undergraduate students according to demographic, economic, psychosocial and behavioral characteristics, and evaluate the prevalence of risky sexual behavior and its associated factors. METHODS A cross-sectional study of the census type with undergraduate students over 18 years old of 80 undergraduate courses of the Universidade Federal de Pelotas (UFPel), in Rio Grande do Sul (RS), who entered in the first semester of 2017 and remained enrolled in the second semester. Undergraduate students who reported having had sex were evaluated. We considered as risky sexual behavior having more than one sexual partner within the last three months and not having used condoms in the last sexual intercourse. RESULTS The prevalence of risky sexual behavior was 9% (95%CI 7.6-10.5). Men presented more risky behavior than women, with a prevalence of 10.8% and 7.5%, respectively. Of the undergraduate students, 45% did not use condoms in the last sexual intercourse, and 24% had two partners or more within three months before the survey. Smartphone applications for sexual purposes were used by 23% of students within three months before the survey. Risky sexual behavior was associated with gender, age at first sexual intercourse, frequency of alcohol consumption, consumption of psychoactive substances before the last sexual intercourse and use of smartphone applications for sexual purposes. CONCLUSION Although undergraduate students are expected to be an informed population, the prevalence of risky sexual behavior was important, indicating the need to expand public investment in sexual education and awareness actions.

RESUMO OBJETIVO Descrever o comportamento sexual de ingressantes universitários de acordo com características demográficas, econômicas, psicossociais e comportamentais, e avaliar a prevalência de comportamento sexual de risco e seus fatores associados. MÉTODOS Estudo de delineamento transversal, do tipo censo, com universitários maiores de 18 anos, de 80 cursos de graduação da Universidade Federal de Pelotas (UFPel), no RS, que ingressaram no primeiro semestre de 2017 e que permaneceram matriculados no segundo semestre. Avaliou-se o comportamento sexual de risco entre os estudantes que relataram já ter tido relações sexuais alguma vez na vida, considerado quando relatado mais de um parceiro sexual nos últimos três meses e não ter utilizado preservativo na última relação. RESULTADOS A prevalência de comportamento sexual de risco foi de 9% (IC95% 7,6-10,5). Estudantes do sexo masculino apresentaram mais comportamento de risco do que estudantes do sexo feminino, com prevalência de 10,8% e 7,5%, respectivamente. Dos universitários, 45% não utilizaram preservativo na última relação e 24% tiveram dois parceiros ou mais nos últimos três meses. Os aplicativos de celular para fins sexuais nos últimos três meses foram utilizados por 23% dos estudantes. O comportamento sexual de risco esteve associado com sexo, idade da primeira relação sexual, frequência de consumo de bebidas alcoólicas, consumo de substâncias psicoativas antes da última relação e uso de aplicativos de celular para fins sexuais. CONCLUSÃO Embora se espere que os universitários sejam uma população informada, a prevalência de comportamento sexual de risco foi importante, indicando a necessidade de ampliação do investimento público em ações de educação sexual e conscientização.

Seroepidemiology of hepatitis B in individuals born between 1945-1985 on a Brazilian regional metropolis / Soroepidemiologia da hepatite B em indivíduos nascidos entre 1945-1985 em uma metrópole regional Brasileira

Background: hepatitis B prevalence can be influenced by social/cultural behavior and the Baby Boomer (BB) generation(1945-1964) may have been more susceptible to this infection. Objectives: We investigated the seroprevalence of markers for HBV infection and vaccination and its association with main risk factors. Methodology: a random sample of individuals aged 30-70 years old in a public clinical laboratory from a metropolitan area of Bahia/Brazil were tested for HBsAg/Total Anti-HBc/Anti-HBs/Anti-HBc-IgM and a socio-demographic questionnaire was applied. Results: of the650 participants, 349 were 51-70 yo (BB) and 301 were non-BB. The prevalences were HBsAg (2.3%), Total Anti-HBc (17.1%) and Anti-HBs (27.4%). Anti-HBcIgM (2.7%) was performed in 112 participants sera who had contact/infection with HBV. The laboratory profiles were characterized as susceptibility (68%), vaccine response (14.8%) and contact/infection with HBV (17.2%). BB participants were more susceptible and less vaccinated than non-BB. The higher frequency of contact/infection status was observed in the BB generation. Statistically significant differences were found for the contact/infection status in males(50,9%) illicit drug use (11,6%), syringe/needle sharing (7,1%), and blood transfusion (10,7%). Non-BB with contact/ infection profile reported more tattoo/piercing and BB reported higher use of glass syringes. Conclusion: the majority of the study population was susceptible to infection but participants older than 50 years showed both, a higher frequency of this profile and also a higher frequency of contact/infection status, thus suggesting the need for greater health care attention for this age group.

Introdução: a prevalência de hepatite B pode ser influenciada pelo comportamento sociocultural e a geração Baby Boomer (BB) (1945-1964) pode ter sido mais suscetível a esta infecção. Objetivos: Investigar a soroprevalência de marcadores para a infecção pelo VHB e resposta vacinal e associação com fatores de risco. Metodologia: soro de indivíduos de 30 a 70 anos randomicamente selecionados em um laboratório publico de análises clínicas na área metropolitana do Brasil foram testados para AgHBs/ Anti-HBc Total /Anti-HBs/Anti-HBc-IgM. Todos responderam questionário sociodemográfico contendo perguntas sobre fatores de risco para hepatite B. Resultados: dos 650 participantes, 349 eram BB (51-70 anos) e 301 eram não-BB (30-50 anos). As prevalências estimadas foram: HBsAg (2,3%), Anti-HBs (27,4%). Entre os Anti-HBc Total (17,1%) apenas 2,7% foram Anti-HBc IgM. Os perfis laboratoriais foram caracterizados como suscetibilidade (68%), resposta vacinal (14,8%) e contato com VHB (17,2%). Na distribuição por idade, os BB foram mais susceptíveis, menos vacinados e apresentaram maior frequência de contato/infecção que os não-BB. Diferenças estatisticamente significantes foram encontradas no status contato/infecção e as seguintes variáveis: sexo masculino, uso de drogas ilícitas, compartilhamento de seringas de vidro/agulhas e transfusão de sangue. Não-BB com status contato/infecção relataram ter mais tatuagem/piercing e BB relataram maior uso de seringas de vidro. Conclusão: a maioria da população estudada era suscetível ao VHB, mas os participantes com mais de 50 anos apresentaram tanto uma maior frequência desse status quanto do status contato/ infecção, sugerindo a necessidade de maior atenção à saúde para indivíduos desta faixa etária.

Fatores de risco em adolescentes de instituições de ensino privadas de um município do Paraná / Risk factors in adolescents of private education institutions in a city of Paraná

Objective: To evaluate the risk factors in adolescents enrolled between the 9thyear of Elementary School and the 3rdyear of High School in private institutions of a municipality of Paraná.Methods: This is a descriptive, cross-sectional, field-based research with a quantitative approach. For data collection, a questionnaire adapted from the Brazilian Youth-Version phase II instrument was used.Results: The results were comprised of responses from 119 adolescents, who reported on sexual behavior, life habits and demographic data, as wellas factors related to the onset of early sexual activity.Conclusion: Sexual and social risk behaviors experienced by adolescents were observed, which are not only related to the characteristics of this period, but also to the context of vulnerabilities in which they are inserted.

Objetivo: Avaliar os fatores de risco em adolescentes matriculados entre o 9ª ano do Ensino Fundamental até o 3ª ano do Ensino Médio de instituições privadas de um município do Paraná. Métodos: Trata-se de uma pesquisa de campo,descritiva, transversal, com abordagem quantitativa. Para coleta de dados foi utilizado um questionário adaptado do instrumento Juventude Brasileira-Versão fase II. Resultados:Os resultados foram constituídos por respostas de 119 adolescentes, que relataram sobre o comportamento sexual, hábitos de vida e dados demográficos, bem como os fatores relacionados ao início da atividade sexual precoce. Conclusão: Observaram-se comportamentos sexuais e sociais de risco vivenciados pelos adolescentes, os quais não estão associados somente às características próprias desse período, como também ao contexto de vulnerabilidades em que estão inseridos.

Factors associated with unprotected anal intercourse among male students who have sex with men in three Northern regions of China / 中华医学杂志(英文版)

Background@#Unprotected anal intercourse (UAI) has previously been associated with human immunodeficiency virus (HIV) infection. Male students who have sex with men (SMSM) are at increased exposure to experience UAI. The aim of this study was to investigate the status of UAI and related factors among SMSM in three northern regions of China.@*Methods@#From November 2018 to January 2019, SMSM, 18 years or older, studying or living in Beijing, Tianjin, or Shijiazhuang, who had anal sex in the past 6 months were recruited by community-based organizations to participate in an unmatched, casecontrol study. Detailed demographic and behavioral information were collected via self-administrated electronic questionnaires and factors related to UAI were assessed using uni- and multivariate logistic regression analyses.@*Results@#Among the 511 SMSM included in the study, 210 (41.1%) reported UAI in the past 6 months. SMSM who had sexual partners at least 10 years older than themselves (odds ratio [OR] = 2.277, 95% confidence interval [CI]: 1.380–3.756), used vacant capsules before sexual activity (OR = 3.858, 95% CI: 1.472–10.106), had a self-perceived moderate-HIV risk (OR = 2.128, 95% CI: 1.403–3.227), and unprotected, first anal intercourse (OR = 2.236, 95% CI: 1.506–3.320) had increased odds of UAI.@*Conclusions@#Factors associated with increased odds of engaging in UAI in the past 6 months among SMSM included having older sexual partners, using vacant capsules, having a self-perceived moderate risk of HIV, and unprotected, first anal intercourse. Continuing education on risk reduction, including improving condom decision making in age-discordant relationships could help address the sexual risk behaviors among SMSM.

Regulação emocional, satisfação sexual e comportamento sexual de risco em mulheres vítimas de abuso sexual na infância / Emotion regulation, sexual satisfaction and risky sexual behavior in women victims of sexual abuse in childhood

Buscou-se investigar questões relacionadas à regulação emocional, à satisfação sexual e ao comportamento sexual de risco em mulheres adultas com histórico de abuso sexual na infância. Participaram desta pesquisa oito mulheres, com média de idade 38 anos, que responderam aos instrumentos de autorrelato sobre regulação emocional e satisfação sexual e a uma entrevista em profundidade, que avaliou aspectos do contexto familiar, emocional, relacionamentos amorosos e também sexuais, abordando questões sobre comportamento sexual de risco. O delineamento utilizado foi exploratório, descritivo com abordagem mista. Os resultados demonstraram que todas as participantes avaliadas possuíam difi culdades de regulação emocional, em menores ou maiores níveis. Em relação à satisfação sexual, seis das participantes obtiveram índices positivos de satisfação, e algumas delas relataram desejo e satisfação sexual preservados. No entanto, outras participantes relataram difi culdades, como aversão sexual e comportamento hipersexualizado. Comportamentos sexuais de risco foram identifi cados em duas das participantes e vinculados a comportamentos do passado.

This research aimed to investigate aspects regarding emotion regulation, sexual satisfaction and risky sexual behavior in adult women with history of childhood sexual abuse. Eight women with an average age of 38 were subjects for this study. They answered to the self-report instruments about emotion regulation and sexual satisfaction, and to an in-depth interview which assessed aspects related to the family, emotional background, besides the loving and sexual relations, including aspects on risky sexual behavior. A descriptive, quantitative and qualitative outlining was carried out. The results showed that all the evaluated presented emotion dysregulation in major or minor levels. Regarding sexual satisfaction, six participants presented positive rates of satisfaction and some of them reported the preservation of there desire and sexual satisfaction. However, other participants reported some difficulties such as sexual aversion and hypersexual behavior. Some risky sexual behaviors were identified in two of these participants and linked to past behaviors.

Perceptions about sexual risk, HIV and HIV-testing in Cali, Colombia / Percepciones sobre riesgo sexual, VIH y prueba del VIH en Cali, Colombia

Abstract Introduction: In Colombia, 20%-54% of the population with sexual practices at higher risk for HIV infection (men who have sex with men, transgender women, women sex workers) has sometime been tested. Objective: To describe perceptions of sexual risk, HIV and HIV testing in people with risky sexual practices and people who identify themselves as heterosexual. Methods: Between 2012 and 2014, it was carried a descriptive study using HIV screening out in Cali-Colombia with the voluntary participation of 940 people aged over 18 years. There were used: informed consent, structured questionnaire and HIV testing. Descriptive, bivariate and multivariate Poisson regression models were performed. Results: Average age 28.5 ±10.9 years; 50% men. 357 (38%) were people from the traditional risk group for HIV infection; and 583 (62%) corresponded to the non-traditional risk group (heterosexual men and women). Likewise, 62% and 41% respectively had HIV test. 51% to 53% reported having sex when they consumed liquor; commercial sex was higher in the group with risky sexual practices (32% vs 3%), as well as anal relations (77% vs 23%), consistent use of condom (32% vs 9%), and HIV positive test (14.3% vs 1.6%). The multivariate analysis showed for both groups that having HIV test was associated with being older than 25 years and a history of sexually transmitted infection. Conclusions: Differentiated education strategies are needed based on risky sexual behaviors and that consider the importance of regular HIV tests for early diagnosis and timely enrollment in care and treatment.

Resumen Introducción: En Colombia, 20%-54% de la población con prácticas sexuales de mayor riesgo para infección por VIH (Hombres que tienen sexo con hombres, mujeres transgénero, mujeres trabajadoras sexuales) se ha hecho la prueba alguna vez. Objetivo: Describir las percepciones sobre riesgo sexual, VIH y prueba del VIH, en personas con prácticas sexuales de riesgo y personas que se identifican heterosexuales. Métodos: Entre 2012 y 2014 se hizo en Cali-Colombia un estudio descriptivo mediante tamizaje para VIH con participación voluntaria de 940 personas mayores de 18 años. Fueron utilizados: consentimiento informado, cuestionario estructurado y prueba VIH. Se realizaron análisis descriptivos, bivariado y modelo de regresión multivariada Poisson. Resultados: Edad promedio 28.5 ±10.9 años, 50% hombres. 357(38%) eran personas de grupos tradicionales de riesgo para infección VIH y 583(62%) correspondían a grupo no tradicional de riesgo (hombres y mujeres heterosexuales). Así mismo, 62% y 41% respectivamente, tenían prueba de VIH. Reportaron tener relaciones sexuales cuando consumieron licor 51% a 53%; sexo comercial fue mayor en grupo con prácticas sexuales de riesgo (32% vs 3%), igual que relaciones anales (77% vs 23%), uso consistente de condón (32% vs 9%) y prueba VIH positiva (14.3% vs 1.6%). El análisis multivariado mostro para ambos grupos, que tener prueba de VIH se asoció con ser mayor de 25 años y antecedente de infección de transmisión sexual. Conclusiones: Se necesitan estrategias de educación diferenciadas según comportamientos sexuales de riesgo y que consideren la importancia de las pruebas regulares del VIH para el diagnóstico temprano e inscripción oportuna en la atención y tratamiento.

Risk behavior score: a practical approach for assessing risk among men who have sex with men in Brazil

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.

Incentives and barriers to HIV testing among female sex workers in Ceará / Incentivos e barreiras ao teste de HIV entre mulheres profissionais do sexo no Ceará

ABSTRACT OBJECTIVE Estimating HIV prevalence and describing the incentives and barriers for HIV testing among female sex workers. METHODS This cross-sectional study recruited 402 women aged 18 years or older, residing in Fortaleza, state of Ceará, Brazil, who reported having had sexual intercourse in exchange for money in last four months. The sample was recruited using Respondent Driven Sampling, between August and November 2010. RESULTS The 84.1% of the sample tested and the estimated prevalence of HIV infection was 3.8%. The sample was young (25 to 39 years ), single (80.0%), with one to three children (83.6%), had eight or more years of schooling (65.7%), and belonged to social classes D/E (53.1%). The majority worked in fixed locations (bars, motels, hotels, sauna - 88.9%), and prostitution was their only source of income (54.1%). About 25% of the sample did not know where to test in the public health sector and 51.8% either never tested or hadn't tested for over a year or more. The main reported barriers to testing were the perceptions that there was no risk of becoming infected (24.1%), and, alternatively, fear of discrimination if the test was positive (20.5%). Incentives for testing were the greater availability of testing sites (57.0%) and health facilities with alternative schedules (44.2%). CONCLUSIONS Prevalence for HIV was similar to that found in other Brazilian cities in different regions of the country, although higher than the general female population. Non-traditional venues not associated with the health system and availability of testing in health units during non-commercial hours are factors that encourage testing. Not considering oneself to be at risk, fear of being discriminated against and not knowing testing locations are barriers.

RESUMO OBJETIVO Estimar a prevalência do HIV e descrever os incentivos e barreiras à realização do teste para o HIV entre mulheres profissionais do sexo. MÉTODOS Este estudo transversal recrutou 402 mulheres de 18 anos ou mais, residentes em Fortaleza, CE, que informaram ter tido relação sexual em troca de dinheiro nos últimos quatro meses. A amostra foi recrutada por meio da técnica Respondent Driven Sampling, entre agosto e novembro de 2010. RESULTADOS A adesão ao teste de HIV foi de 84,1% e a prevalência estimada da infecção pelo HIV foi de 3,8%. A amostra era jovem (25 a 39 anos), solteira (80,0%), com um a três filhos (83,6 %), tinham oito anos ou mais de estudo (65,7%) e pertencia às classes sociais D/E (53,1%). A maioria exercia a profissão em locais fechados (bares, motéis, hotéis, sauna - 88,9%), e a prostituição era a única fonte de renda (54,1%). Cerca de 25% da amostra desconhecia onde o teste de HIV era realizado na rede pública e 51,8% nunca fez o teste ou se testou há um ano ou mais. As principais barreiras ao teste foram acreditar que não corre risco de se infectar (24,1%) e o medo da discriminação caso o teste fosse reagente (20,5%). Os incentivos foram relacionados à maior oferta de locais para o teste (57,0%) e de unidades de saúde com horários alternativos (44,2%). CONCLUSÕES A prevalência foi semelhante à encontrada em outras cidades brasileiras de diferentes regiões do país, apesar de superiores a de mulheres não profissionais do sexo. A disponibilidade do teste em locais não relacionados à saúde e a oferta nas unidades básicas em horário não comercial são fatores que incentivam a realização do teste. Não se considerar sob-risco, medo de ser discriminada e desconhecimento dos locais onde o teste é realizado podem ser uma barreira para a realização do exame.

Qualitative study on unprotected sexual behaviors among male students who have sex with men in Beijing / 中华预防医学杂志

Objective@#To investigate the related factors of unprotected sexual behaviors among male students who have sex with men in Beijing.@*Methods@#Male students who have sex with men were recruited from May 2018 to July 2018 at two voluntary counseling and testing (VCT) clinics in Beijing by convenient sampling method. Information being collected during in-depth personal interviews with a semi-structured outline included ways to seek sexual partners, sexual partners characteristics, attitude of condom use, incidence and causes of unprotected sexual behaviors, rush poppers and alcohol use. The text information was summarized and analyzed by Nvivo 11.0 software.@*Results@#A total of 35 male students who have sex with men were recruited and interviewed, the median of age was 22 years old (P25-P75: 21-24 years old). We found that incomprehensive knowledge of condom use, low risk perception of non-anal sexual behaviors, rush poppers and alcohol use were risk factors of unprotected sexual behaviors on individual level. Besides, sex with regular sex partners, partners who were much older or not from campus, and insertive partners are more likely to be unprotected. Furthermore, refusal of condom use by sexual partners and low self-efficacy of decision-making on condom use were the main reasons for unprotected sexual behaviors among male student who have sex with men.@*Conclusion@#Lack of condom use knowledge, low risk perception of non-anal sexual behaviors and insufficient ability to refuse non-condom requirements for regular sex partners, partners who were much older or not from campus, and insertive partners are related factors of unprotected sexual behaviors among male students who have sex with men.

Analysis on influencing factors of unprotected sexual behavior among men who have sex with men based on structural equation model / 中华预防医学杂志

Objective@#To analyze the influencing factors and mechanism for unprotected sexual behavior of men who have sex with men (MSM) in China.@*Methods@#MSM who are more than 16 years old and have had homosexual sexual behaviors in recent years were recruited from five cities (Tianjin, Harbin, Nanjing, Chongqing and Xi'an) with active MSM population during 2013-2014 through network, site recruitment and peer recommendation using convenient sampling method. 3 519 subjects were included in this study. The sexual behavior related information of MSM in five cities was investigated using questionnaires. The confirmatory factor analysis was used to construct the measurement model by using the robust estimation method based on the weighted least square method to estimate parameters, and the final model was determined through evaluation and modification.@*Results@#A total of 3 519 subjects were (29.9±8.76) years old, with a clear sexual orientation of 3 223 (91.6%), and 2 287 (65.0%) were aware of free HIV/AIDS treatment policies. The proportion of using condom last time was 77.2% (n=2 718), and the proportion of using condom every time was 36.9% (n=1 299) and 43.2% (n=1 521) respectively for the past six months with fixed and temporary partners. Structural equation model provided a good fit, the root mean square error of approximation, comparative fit index and non-normed fit index was 0.07, 0.97, 0.95, respectively. Knowing AIDS knowledge, educational level and sexual orientation had direct effects on unprotected sexual behavior, and the path coefficients were 0.179,-0.049 and -0.159, respectively. While the role of interventions was indirect, the path coefficient was 0.147.@*Conclusion@#Lower education and unclear sexual orientation are disadvantages for reducing unprotected sexual behavior. Interventions mainly affect the unprotected sexual behavior by improving the level of HIV/AIDS knowledge. Increasing the comprehensive knowledge of MSM through intervention should be highly valued.