Tendencias temporales en el uso de métodos de barrera durante las relaciones sexuales en Argentina y eficacia de intervenciones para promover su implementación / Trends in the use of barrier methods during sexual intercourse in Argentina and the effectiveness of interventions to promote their implementation

Durante la última década, presenciamos en Argentina un aumento de la incidencia de infecciones de transmisión sexual(ITS) vinculado con una disminución en el uso de métodos de barrera (MB). De acuerdo a la bibliografía, existen varias categorías de obstáculos para el uso de MB: desigualdades de género, dificultades económicas y/o de accesibilidad, desconfianza respecto de los MB provistos por el Estado respecto de su calidad y/o fecha de vencimiento, o bien, creencias acerca de que la utilización de MB disminuye el placer sexual o que no es necesario su uso cuando la relación de pareja es estable y/o basada en la confianza, el amor y/o la fidelidad. A partir de esta problemática, los autores de este artículo realizamos una búsqueda bibliográfica y revisamos cual es la evidencia que respalda diferentes intervenciones para promover el uso de MB. Encontramos evidencia de moderada calidad que avala la eficacia de intervenciones a nivel comunitario basadas en la teoría sociocognitiva y en el aumento de la oferta y la disponibilidad de preservativos para mejorar el conocimiento sobre el HIV y el uso de estos métodos, sin impacto sobre la incidencia de ITS a nivel poblacional. (AU)

Over the last decade, Argentina has shown an increase in the incidence of sexually transmitted infections (STIs) linked to a decrease in the use of barrier methods (BM). According to the literature, there are several categories of obstacles for the use of BM: gender inequalities, economic and/or accessibility difficulties, mistrust regarding the quality and/or expiry date of state-provided BMs, as well as beliefs that the use of BMs reduces sexual pleasure or that their use is not necessary when the couple's relationship is stable and/or based on trust, love and/or fidelity. In light of this issue, the authors of this article conducted a literature search and reviewed the evidence supporting different interventions to promote the use of BM. They found moderate quality evidence that supports the efficacy of community-level interventions based on socio-cognitive theory and on increasing the supply and availability of condoms to improve knowledge about HIV and the use of these methods, with no impact on the incidence of STIs at the population level. (AU)

Assessing the drivers of syphilis among men who have sex with men in Switzerland reveals a key impact of screening frequency: A modelling study.

Over the last decade, syphilis diagnoses among men-who-have-sex-with-men (MSM) have strongly increased in Europe. Understanding the drivers of the ongoing epidemic may aid to curb transmissions. In order to identify the drivers of syphilis transmission in MSM in Switzerland between 2006 and 2017 as well as the effect of potential interventions, we set up an epidemiological model stratified by syphilis stage, HIV-diagnosis, and behavioral factors to account for syphilis infectiousness and risk for transmission. In the main model, we used 'reported non-steady partners' (nsP) as the main proxy for sexual risk. We parameterized the model using data from the Swiss HIV Cohort Study, Swiss Voluntary Counselling and Testing center, cross-sectional surveys among the Swiss MSM population, and published syphilis notifications from the Federal Office of Public Health. The main model reproduced the increase in syphilis diagnoses from 168 cases in 2006 to 418 cases in 2017. It estimated that between 2006 and 2017, MSM with HIV diagnosis had 45.9 times the median syphilis incidence of MSM without HIV diagnosis. Defining risk as condomless anal intercourse with nsP decreased model accuracy (sum of squared weighted residuals, 378.8 vs. 148.3). Counterfactual scenarios suggested that increasing screening of MSM without HIV diagnosis and with nsP from once every two years to twice per year may reduce syphilis incidence (at most 12.8% reduction by 2017). Whereas, increasing screening among MSM with HIV diagnosis and with nsP from once per year to twice per year may substantially reduce syphilis incidence over time (at least 63.5% reduction by 2017). The model suggests that reporting nsP regardless of condom use is suitable for risk stratification when modelling syphilis transmission. More frequent screening of MSM with HIV diagnosis, particularly those with nsP may aid to curb syphilis transmission.

Prevalência do uso do preservativo por trabalhadores da construção civil e fatores associados / Prevalence of condom use among construction workers and associated factors / Prevalencia del uso de condón por los trabajadores de la construcción y factores relacionados

Objetivo: estimar a prevalência do uso do preservativo e os fatores associados em trabalhadores da construção civil. Método: estudo transversal, analítico, com 370 trabalhadores da grande João Pessoa, Paraíba. Considerou como variável de desfecho o uso do preservativo na última relação sexual. Utilizou-se questionário estruturado. Análise de regressão logística bivariada e múltipla foi utilizada para identificar associação entre as variáveis sociodemográficas e o uso do preservativo. Resultados: a maioria dos participantes é do sexo masculino, adultos jovens, casados e com baixa escolaridade. A prevalência estimada de uso do preservativo foi de 23,5% (IC 95%: 19,2% - 27,8%). Indivíduos com menos de 39 anos possuem 1,82 vezes mais chances de usar o preservativo e ser casado diminui (RC=0,26) as chances de uso. Conclusão: há baixa prevalência de uso do preservativo em trabalhadores da construção civil. A prevenção combinada é uma alternativa para controle das infecções transmissíveis, sendo o preservativo o principal coadjuvante.

Objective: to estimate the prevalence of condom use and the associated factors in construction workers. Method: in this crosssectional, analytical study with 370 workers from greater João Pessoa, Paraíba, Brazil, the outcome variable was condom use at last sexual intercourse. A structured questionnaire was used. Bivariate and multiple logistic regression analysis was used to identify associations between sociodemographic variables and condom use. Results: most participants were young, male adults, married and with little education. Estimated prevalence of condom use was 23.5% (95% CI; 19.2% - 27.8%). Individuals under 39 years old were found to be 1.82 times more likely to use condoms than individuals aged 40 years or older (OR = 1.82; 95% CI), while being married reduced the likelihood (OR = 0.26). Conclusion: prevalence of condom use is low among construction workers. Combined prevention is one option for controlling communicable diseases, with condoms as the main support.

Objetivo: estimar la prevalencia del uso de condón y los factores asociados en trabajadores de la construcción. Método: en este estudio transversal y analítico con 370 trabajadores del área metropolitana de João Pessoa, Paraíba, Brazil, la variable de resultado fue el uso de condón en la última relación sexual. Se utilizó un cuestionario estructurado y análisis de regresión logística bivariada y múltiple para identificar asociaciones entre las variables sociodemográficas y el uso del condón. Resultados: la mayoría de los participantes fueron jóvenes, varones adultos, casados y con poca educación. La prevalencia estimada del uso de condones fue del 23,5% (IC del 95%; 19,2% - 27,8%). Se encontró que las personas menores de 39 años tenían 1,82 veces más probabilidades de usar condones que las personas de 40 años o más (OR = 1,82; IC del 95%), mientras que estar casado redujo la probabilidad (OR = 0,26). Conclusión: la prevalencia del uso de condones es baja entre los trabajadores de la construcción. La prevención combinada es una opción para controlar las enfermedades transmisibles, con el condón como principal apoyo.

Sexual and reproductive health correlates of polysubstance use among female adolescents who sell sex in the southwest of China.

BACKGROUND: Substance use and adverse sexual and reproductive health (SRH) outcomes continue to be significant threats to female adolescents' health and wellbeing, particularly to these marginalized subpopulations. Our research aimed to tackle knowledge gaps regarding the prevalence of concurrent substance use including alcohol, tobacco, illicit drug among Chinese adolescent female sex workers (AFSWs), while to assess the correlates between substance use and SRH risks; the needs for comprehensive SRH services were also examined in this study. METHODS: A cross-sectional study enrolled 310 AFSWs aged 15-19 years by using cluster sampling method in Kunming, China. Descriptive analysis was employed to characterize the participants who were regular-alcohol users, regular-tobacco users, illicit drug users and polysubstance users. Multivariable logistic regression analysis was performed to detect the SRH correlates of regular-alcohol use, regular-tobacco use, illicit drugs and polysubstance use respectively. RESULTS: There is a high prevalence of regular-alcohol drinking (83%, 257/310) among AFSWs, with 44% (136/310) smoking cigarettes regularly and 9% using illicit drug (27/310) in the past year. In multivariate analysis, AFSWs who had middle and high school education, had higher monthly income, experienced of sexual and gender based violence (SGBV) and prior abortion, and regular-tobacco smoking were associated with increased odds of regular-alcohol drinking; engaging in unprotected sex while drunk, having STIs symptoms and using illicit drugs were significantly associated with regular-tobacco smoking; while AFSWs who had an illicit drug using- intimate partner, experienced forced sexual initiation, accessed unsafe medical providers for STIs treatment were associate with increased odds of illicit drug use. Moreover, 35% (105/298) AFSWs sought unsafe medical care for STIs treatment, or no treatment at all, among them, majority were using polysubstance (87%; 91/105). CONCLUSIONS: Our findings reveal combined threats of substance use to AFSWs' SRH and wellbeing in China, this study emphasises that the coordinated efforts are needed to integrate SRH promotion and harm reduction service across sectors, and not only fragmented measures. An effective response should include an agreed framework, indicators and targets supported by political will, solid leadership and policy reform to deal with AFSWs' overlapping vulnerabilities in a systematic way.

Sociodemographic and behavioural factors associated with testing for HIV and STIs in a US nationwide sample of transgender men who have sex with men.

OBJECTIVES: Transgender men who have sex with men (TMSM) represent an understudied population in relation to screening for HIV and sexually transmitted infections (STIs). We examined HIV and STI testing prevalence among TMSM along with the factors associated with testing in a diverse US nationwide sample of TMSM. METHODS: Data from a cross-sectional online convenience sample of 192 TMSM were analysed using multivariable binary logistic regression models to examine the association between sociodemographic and behavioural factors and lifetime testing for HIV, bacterial STIs and viral STIs, as well as past year testing for HIV. RESULTS: More than two-thirds of TMSM reported lifetime testing for HIV (71.4%), bacterial STIs (66.7%), and viral STIs (70.8%), and 60.9% had received HIV testing in the past year. Engaging in condomless anal sex with a casual partner whose HIV status is different or unknown and having fewer than two casual partners in the past 6 months were related to lower odds of lifetime HIV, bacterial STI, viral STI and past year HIV testing. Being younger in age was related to lower probability of testing for HIV, bacterial STIs and viral STIs. Furthermore, TMSM residing in the South were less likely to be tested for HIV and viral STIs in their lifetime, and for HIV in the past year. Finally, lower odds of lifetime testing for viral STIs was found among TMSM who reported no drug use in the past 6 months. CONCLUSIONS: These findings indicate that a notable percentage of TMSM had never tested for HIV and bacterial and viral STIs, though at rates only somewhat lower than among cisgender MSM despite similar patterns of risk behaviour. Efforts to increase HIV/STI testing among TMSM, especially among those who engage in condomless anal sex, are needed.

Early sex work initiation and its association with condomless sex and sexually transmitted infections among female sex workers in Iran.

Early sex work initiation among female sex workers (FSWs) increases their vulnerabilities to high-risk sexual practices and sexually transmitted infections (STIs). We examined the association of early sex work with condomless sex indicators, HIV, and other STIs, including human papillomavirus, chlamydia, trichomoniasis, syphilis, and gonorrhea, among FSWs in Iran. We recruited 1347 FSWs from 13 cities in 2015, with 1296 participants (94.2%) reporting information about their age of sex work initiation. Early sex work was defined as the initiation of selling sex before 18 years of age. Adjusted odds ratios (aORs) and 95% confidence intervals (CIs) were reported using multivariable logistic regression. Overall, 10.1% of FSWs reported early sex work initiation. FSWs who initiated sex work earlier were more likely to report last-month inconsistent condom use (aOR = 3.31, 95% CI: 1.82, 6.02) and condomless sex with last client (aOR = 1.72, 95% CI: 1.15, 2.56). There was no statistically significant association between early sex work and HIV (aOR = 1.40, 95% CI: 0.43, 4.53) and any other STIs (aOR = 1.01, 95% CI: 0.69, 1.48), except for chlamydia (aOR = 2.09, 95% CI: 1.08, 4.04). These findings suggest that FSWs with early sexual debut would benefit from differentiated interventions including screening for STIs and enhanced counseling for condom use.

Current HIV Testing & Risk Behaviors among Students at Historically Black Colleges & Universities in a Southern State.

BACKGROUND/PURPOSE: HIV testing prevalence is low among young adults (YA) ages 18-24. Previous research supports routine testing among African-American college students. Historically Black Colleges and Universities (HBCUs) are uniquely situated to support HIV education and prevention efforts. This study aimed to assess current HIV risk behaviors and current knowledge of PrEP among HBCU students. METHODS: In collaboration with a partnering organization, we conducted HIV testing events and HIV risk assessment at four HBCUs in a southern state. RESULTS: Among participants (N = 615), most identified as African American (578, 94.8%), female (377, 61.3%) and 18-24 years old (540, 87.9%). Many (42.3%) had never been tested for HIV. Most reported they had been sexually active in the last year (533, 86.8%) with many reporting 2-5 partners (270, 43.9%). Among males (n = 236), 8.6% reported same sex partners. Many participants reported inconsistent condom use during vaginal sex (242, 46%). Most participants had not heard of PrEP (473, 86.2%). CONCLUSION: Considering most participants had one or multiple HIV related risk behaviors, and many had never been tested for HIV, HBCUs may be important venues to promote HIV risk reduction and regular HIV testing.

Shift in HIV/AIDS Epidemic and Factors Associated with False Positives for HIV Testing: A Retrospective Study from 2013 to 2018 in Xi'an, China.

BACKGROUND: In China, although quite a few bold programmes have been made for HIV/AIDS, the epidemic has still shown an increasing trend. OBJECTIVES: The study was aimed to investigate the characteristics of new HIV/AIDS and the major factors of false positives (FP) for HIV testing. METHODS: A retrospective review was performed in a teaching hospital in Xi'an between 2013 and 2018. The overall characteristics and trends of new HIV/AIDS were described. Moreover, the major factors of FP were determined by the Pareto analysis. RESULTS: A total of 469 new HIV/AIDS were diagnosed, with an increasing prevalence of the new HIV/AIDS from 0.0626% (41/65503) in 2013 to 0.0827% (115/139046) in 2018. Of them, the majority occurred in the males (88.50%), people aged 21-50 years (76.97%), migrants (60.98%), and sexual contact route (88.70%). There was a rapid increase in the annual number of new HIV/AIDS and increasing trends in groups of young individuals, students, and homosexual mode; however, a downward trend in the percentage of injecting drug use was also observed. Over 50 years old and patients from oncology, obstetrics, hepatobiliary surgery, nephrology, cardiology, and infectious disease constituted the major factors of FP. CONCLUSION: The HIV/AIDS epidemic in Xi'an is still evolving, therefore, effective strategies, appropriate education and scaling up HIV testing should be developed. In addition, old adults and specific departments were associated with FP.

Investigate the sexual habits of young people: a cross-sectional study among nursing students of the University of Palermo.

INTRODUCTION: Sexually transmitted diseases are an emerging problem especially among young people, increasing the burden of disease in this population. The aim of the study was to evaluate sexual habits, sexual relations and knowledge of STIs among the students in the nursing science course of the University of Palermo. MATERIALS AND METHODS: In April 2019, a survey was provided to students that investigate on: personal information and habits, knowledge of sexually transmitted diseases, anti-HPV vaccination. Multivariable logistic regression was performed, considering it as a dependent variable "Have you occasionally had unprotected sex (without a condom)? Yes", in order to evaluate the role of the variables of the questionnaire. Results are expressed as adjusted Odds Ratio (aOR). RESULTS: 405 students completed the questionnaire. The mean age of the sample is 21.65 years, 69.63% of the interviewees are women. The multivariable logistic regression shows that the risk of having occasional unprotected sex (without condom) is significantly associated with "Do you permanently have unprotected sex (without a condom)? Yes" (aOR 4.46); "Have you ever received information on sex education and/or sexually transmitted diseases? No" (aOR 6.02); "Age Class <22 years old (aOR 2.03); "Number of sexual partners: As the unit increase" (aOR 1.18). CONCLUSIONS: Too many young people receive confusing and conflicting information about relationships and sex, as they make the transition from childhood to adulthood. Nurses play an important role in promoting public health. The study showed that young students are not still enough sensitized on sexually transmitted infections and preconception care.(www.actabiomedica.it).

Why nursing students have sex without condom? A study in the university of Palermo.

AIMS: Evaluation of the knowledge and behavioral risks related to sexually transmitted infections (STIs) among the student population of the degree course in nursing at the University of Palermo. MATERIAL AND METHODS: An anonymous online a survey was provided to students that investigate to socio-demographic information, sexual habits and the level of knowledge of the STIs. Multivariable logistic regression was performed, considering it as a dependent variable "Do you permanently have unprotected sex (without a condom)? Yes", in order to evaluate the role of the variables of the questionnaire. Results are expressed as adjusted Odds Ratio (aOR). RESULTS: The sample size consists of 405. The average age of the sample is 21.65 years (standard deviation±3.24). The analysis shows that the risk of having permanently unprotected sex (without condom) is significantly associated with the following variables: "Are you engaged or single? Engaged" (aOR 3.24, 95% CI 1.66 - 6.33); "Sexual orientation. Homosexual or Bisexual (aOR 4.45, 95% CI 1.30 - 15.29); "Have you occasionally had unprotected sex (without a condom)? Yes" (aOR 5.09, 95% CI 2.69 - 9.62); "How would you define your knowledge of sexually transmitted diseases? Good" (aOR 2.07, 95% CI 1.05 - 4.08); "How would you define your knowledge about contraceptive methods? Good" (aOR 2.51, 95% CI 1.23 - 5.15); "Have you or have you ever had a sexually transmitted disease? Yes (aOR 4.43, 95% CI 1.71 - 11.53); "Do you know that men can also undergo HPV vaccination? Yes" (aOR 2.57, 95% CI 1.03 - 6.40); "Age. As the unit increase" (aOR 1.14, 95% CI 1.02 - 1.26). CONCLUSIONS: These results highlight the importance of involving university students in programs aimed at improving the knowledge in terms of STIs and increase of Sexual and reproductive health. Further, because STIs prevention is based mainly on human behavior, tailored intervention is needed especially because behavior change remains a complex challenge.

Sex Without Contraceptives in a Multicenter Study of Adolescent Emergency Department Patients.

OBJECTIVES: In the United States, rates of teenage pregnancy and sexually transmitted infections (STIs) remain exceptionally high, and racial and ethnic disparities persist. Emergency departments (EDs) care for over 19 million adolescents each year, the majority being minority and low socioeconomic status. Single-center studies demonstrate infrequent use of contraceptives among adolescent ED patients and an association between risky sex and behaviors such as alcohol and drug use; however, no multicenter ED data exist. The objectives of this study were to 1) determine the prevalence of sex without contraceptives in a large multicenter adolescent ED study and 2) assess patient demographic and risky behaviors associated with sex without contraceptives. METHODS: Participants aged 14 to 17 years (n = 3,247) in 16 pediatric EDs across the United States completed an electronic survey. Questions focused on validated measures of risky sex; use of alcohol, tobacco, marijuana, and other drugs; and depression and violence. In this secondary analysis, we constructed univariable and multivariable models to identify demographic and behavioral factors associated with sex without contraceptives (our primary outcome), separately for adolescent males and females. RESULTS: In the prior year, 17.4% (236/1,356) of males and 15.8% (299/1,891) of females had sex without contraceptives. In the multivariable model, sex without contraceptives for both genders was more likely among teens who were black, with conduct problems and participated in casual sex, binge drinking, or cannabis use. Sex without contraceptives was also more likely among Hispanic and cigarette-smoking males, as well as depressed females. CONCLUSIONS: Adolescent ED patients across the United States are participating in risky sexual behaviors that increase their likelihood of pregnancy and STI acquisition. These adolescents report a number of problem behaviors, including substance use, which are strongly correlated with unprotected sex. The ED visit may be an opportunity to identify at-risk adolescent patients, address risky behaviors, and intervene to improve adolescent health.

Misclassification of sexual health risks in a self-identified low risk cohort of men who have sex with men (MSM) enrolled in a community based PrEP program.

The CDC recommends PrEP for MSM at substantial risk of HIV acquisition, leaving clinicians unsure whether to prescribe PrEP to MSM who do not disclose HIV risk factors. A longitudinal cohort of MSM requesting PrEP despite reporting during a clinical visit either 100% condom use or participation in oral sex only and no other risk factors was followed over 13 months at a community clinic in San Francisco to assess the accuracy of their HIV risk perception. Participants completed a sexual and substance use behavior questionnaire at baseline, outside of the clinical visit and were followed by quarterly HIV/STI testing and condom use change questionnaires. Condomless sex increased from 0% at baseline to 12% at month 1, peaked at 34% at month 7, and then decreased again to 8% at month 13. Rates of pharyngeal GC/CT varied from 7% at baseline to 12% at month 13, while rectal GC/CT decreased from 6% at baseline to 0% at month 13. The rate of syphilis was 1% both at baseline and at month 13, however, 11% and 15% of clients tested positive for syphilis at months 1 and 7 respectively.

Examining the Impact of a Psychosocial Syndemic on Past Six-Month HIV Screening Behavior of Black Men who have Sex with Men in the United States: Results from the POWER Study.

Syndemic production theory has been used to explore HIV transmission risk or infections but has not been used to investigate prevention behavior, or with large samples of non-Whites. This analysis is the first to explore the impact of syndemic factors on previous six-month HIV screening behavior among US Black MSM. Data from Promoting Our Worth, Equality and Resilience (POWER) were analyzed from 3294 participants using syndemic variable counts and measures of interaction/synergy. Syndemic variables included: past three-month poly-drug use, depression, last year intimate partner violence, HIV risk and problematic binge drinking. BMSM reporting two syndemic factors were more likely to report screening (AOR = 1.37, 95% CI 1.04-1.80; p = 0.028) with no significant associations for three or more conditions. Measures of joint effect revealed that there were synergies among depression, problematic binge drinking and poly-drug use but these psychosocial factors cannot entirely explain testing patterns and excess disease burden among BMSM.

HIV awareness: a kap study among students in Italy reveals that preventive campaigns still represent a public health priority.

BACKGROUND: Improving knowledge about HIV/AIDS among young people is crucial for preventing new infections. The aim of the study was to investigate knowledge, attitudes and practices regarding HIV infection among students attending university courses related to the healthcare professions, in order to better target future preventive and informative HIV campaigns tailored for young people. STUDY DESIGN: A knowledge, attitude and practices study was conducted among university students attending the following university courses in Bari (Southern Italy): Medicine and Surgery (MS), Dentistry and Dental Prostheses, Health Assistance, Motor Activities and Sports Sciences, Sciences and Technology of Herbal and Health Products, Nursing, Biomedical Laboratory Techniques, and Dietetics. METHODS: Students completed a self-administered questionnaire designed to assess their knowledge/attitudes re/ HIV and their own sexual practices. The general part of the questionnaire requested information about age, gender, nationality, religion and marital status. The second part included questions asking about knowledge, attitude and practices with respect to HIV, which required true/false answers or graduated answers (reported as agree, quite agree, quite disagree, and disagree). RESULTS: Four hundred students were invited to fill in the questionnaire. The response rate was 91.2% (n=365). Almost all students were aware that HIV is transmitted through sexual intercourse and blood, but only 34% knew that breastfeeding is a route of transmission. Of the respondents, 86.8% referred to previous sexual intercourse (25.8% reported using a condom in all cases of sexual intercourse, 43.5% in most cases, 18.6% rarely and 12.1 never). Sexual intercourse with casual partners was reported by 37.5% of these students and 63.9% of them did not always use a condom. CONCLUSIONS: The results of the study show that knowledge about some aspects of HIV is insufficient even though the students participating in the present study are students attending university courses related to the healthcare professions. Moreover, high-risk behaviors as the lack of the use of condom during sexual intercourse with casual partners are also common among interviewed students. Programs aimed at providing information that can prevent/reduce transmission of HIV in young people and new strategies to improve knowledge should be stressed as a public health priority.

PrEP Use Among Female Sex Workers: No Evidence for Risk Compensation.

BACKGROUND: Little is known about risk compensation among female sex workers (FSW) on HIV pre-exposure prophylaxis (PrEP), and self-report of sexual behaviors is subject to bias. SETTING: Prospective observational PrEP demonstration study conducted among FSW in Cotonou, Benin. METHODS: Over a period of 24 months, we assessed and compared trends in unprotected sex as measured by self-report (last 2 or 14 days), by detection of sexually transmitted infections (STIs), and by vaginal detection of prostate-specific antigen and Y-chromosomal DNA, 2 biomarkers of semen exposure in the last 2 or 14 days, respectively. Trends were assessed and compared using a log-binomial regression that was simultaneously fit for all unprotected sex measures. RESULTS: Of 255 participants, 120 (47.1%) completed their follow-up. Prevalence of STI decreased from 15.8% (95% confidence interval: 11.8% to 21.0%) at baseline to 2.1% (95% confidence interval: 0.4% to 10.2%) at 24 months of follow-up (P-trend = 0.04). However, we observed no trend in self-report of unprotected sex in the last 2 (P = 0.42) or 14 days (P = 0.49), nor in prostate-specific antigen (P = 0.53) or Y chromosomal DNA (P = 0.25) over the same period. We observed no statistically significant difference between trends in self-report of unprotected sex and trends in biomarkers of semen exposure in the last 2 days (P = 0.14) or in the last 14 days (P = 0.29). CONCLUSIONS: We observed no evidence of risk compensation, and a decrease in STI among FSW on PrEP. PrEP intervention may be an opportunity to control STI among FSW. Future studies should assess risk compensation with biomarkers of semen exposure when possible.

Obligations of motherhood in shaping sex work, condom use, and HIV care among Swazi female sex workers living with HIV.

Parental obligations influence sexual behaviour among female sex workers (FSW) and may serve as a risk or protective factor for HIV acquisition. How these obligations affect behaviours beyond HIV prevention, including HIV care, is understudied. We analysed 25 interviews conducted with 11 mothers who sell sex and are living with HIV, and 4 key informants as part of a larger study examining the positive health, dignity, and prevention needs of FSW in eSwatini. Despite awareness of HIV reinfection, FSW initiated sex work and engaged in condomless sex due to financial pressures of providing for children. While women attributed having condomless sex to their obligations as a provider, motherhood also served as motivation to engage in HIV care. Further, FSW described children as a source of support in HIV care. Children reminded mothers to take their medications, prepared food to take with medications, and assisted with travel to the clinic.

Prevalence of Risk and Protective Factors Associated with HIV and HCV Infections Among Male High School Students Who Have Sex with Males-Hawai'i, 2013, 2015, and 2017.

Human immunodeficiency virus (HIV) and hepatitis C virus (HCV) infections are increasing among young adults, and males who have sex with males (MSM) are at high risk for both infections. Limited Hawai'i data exists on the extent to which populations, such as MSM, are engaging in behaviors that place them at increased risk for either infection. This analysis quantified the proportion of Hawai'i public high school students who are MSM and are at risk for HCV and HIV infections. Data from the 2013, 2015, and 2017 Hawai'i Youth Risk Behavior Surveys (YRBS) were combined (n=16,751) to investigate the prevalence of risk factors associated with HIV and HCV infections (eg, sexual risk behaviors, substance use) and protective factors among MSM public high school students. Among sexually experienced male students (n=3,391), 13.1% were classified as MSM and among these, 40.3% identified as heterosexual despite reporting same-sex sexual contact. Multivariate modeling demonstrated that MSM students are significantly more likely than non-MSM students to engage in behaviors that increase their risk for HIV and HCV infections (composite risk variable; adjusted Prevalence Ratio: 1.40, 95% CI 1.15 - 1.70) and are significantly less likely to have protective factors. Evidence-based prevention strategies for reducing HIV and HCV risk behaviors while improving protective factors among sexual minority youth in Hawai'i are necessary and must address sexual behavior along with other dimensions of sexual orientation.

Combination prevention and HIV: a cross-sectional community survey of gay and bisexual men in London, October to December 2016.

BackgroundMen who have sex with men (MSM) are at risk of HIV and are an important population to monitor and ameliorate combination prevention efforts.AimTo estimate HIV prevalence and identify factors associated with frequent HIV testing (≥ 2 HIV tests in the last year) and pre-exposure prophylaxis (PrEP) use among MSM in London.MethodsFor this cross-sectional study, MSM recruited from 22 social venues provided oral-fluid samples for anonymous HIV antibody (Ab) testing and completed a questionnaire. Factors associated with frequent HIV testing and PrEP use were identified through logistic regression.ResultsOf 767 men recruited, 545 provided an eligible oral specimen. Among these, 38 MSM (7.0%) were anti-HIV positive including five (13.2%; 5/38) who reported their status as negative. Condomless anal sex within the previous 3 months was reported by 60.1% (412/685) men. Frequent HIV testing was associated with, in the past year, a reported sexually transmitted infection (adjusted odds ratio (AOR): 5.05; 95% confidence interval (CI): 2.66-9.58) or ≥ 2 casual condomless partners (AOR 2-4 partners: 3.65 (95% CI: 1.87-7.10); AOR 5-10 partners: 3.34(95% CI: 1.32-8.49). Age ≥ 35 years was related to less frequent HIV testing (AOR 35-44 years: 0.34 (95% CI: 0.16-0.72); AOR ≥ 45 years: 0.29 (95% CI: 0.12-0.69). PrEP use in the past year was reported by 6.2% (46/744) of MSM and associated with ≥ 2 casual condomless sex partners (AOR: 2.86; 95% CI: 1.17-6.98) or chemsex (AOR: 2.31; 95% CI: 1.09-4.91).ConclusionThis bio-behavioural study of MSM found high rates of behaviours associated with increased risk of HIV transmission. Combination prevention, including frequent HIV testing and use of PrEP, remains crucial in London.