Trends and Characteristics of #HIVPrevention Tweets Posted Between 2014 and 2019: Retrospective Infodemiology Study.

BACKGROUND: Twitter is becoming an increasingly important avenue for people to seek information about HIV prevention. Tweets about HIV prevention may reflect or influence current norms about the acceptability of different HIV prevention methods. Therefore, it may be useful to empirically investigate trends in the level of attention paid to different HIV prevention topics on Twitter over time. OBJECTIVE: The primary objective of this study was to investigate temporal trends in the frequency of tweets about different HIV prevention topics on Twitter between 2014 and 2019. METHODS: We used the Twitter application programming interface to obtain English-language tweets employing #HIVPrevention between January 1, 2014, and December 31, 2019 (n=69,197, globally). Using iterative qualitative content analysis on samples of tweets, we developed a keyword list to categorize the tweets into 10 prevention topics (eg, condom use, preexposure prophylaxis [PrEP]) and compared the frequency of tweets mentioning each topic over time. We assessed the overall change in the proportions of #HIVPrevention tweets mentioning each prevention topic in 2019 as compared with 2014 using chi-square and Fisher exact tests. We also conducted descriptive analyses to identify the accounts posting the most original tweets, the accounts retweeted most frequently, the most frequently used word pairings, and the spatial distribution of tweets in the United States compared with the number of state-level HIV cases. RESULTS: PrEP (13,895 tweets; 20.08% of all included tweets) and HIV testing (7688, 11.11%) were the most frequently mentioned topics, whereas condom use (2941, 4.25%) and postexposure prophylaxis (PEP; 823, 1.19%) were mentioned relatively less frequently. The proportions of tweets mentioning PrEP (327/2251, 14.53%, in 2014, 5067/12,971, 39.1%, in 2019; P≤.001), HIV testing (208/2251, 9.24%, in 2014, 2193/12,971, 16.91% in 2019; P≤.001), and PEP (25/2251, 1.11%, in 2014, 342/12,971, 2.64%, in 2019; P≤.001) were higher in 2019 compared with 2014, whereas the proportions of tweets mentioning abstinence, condom use, circumcision, harm reduction, and gender inequity were lower in 2019 compared with 2014. The top retweeted accounts were mostly UN-affiliated entities; celebrities and HIV advocates were also represented. Geotagged #HIVPrevention tweets in the United States between 2014 and 2019 (n=514) were positively correlated with the number of state-level HIV cases in 2019 (r=0.81, P≤.01). CONCLUSIONS: Twitter may be a useful source for identifying HIV prevention trends. During our evaluation period (2014-2019), the most frequently mentioned prevention topics were PrEP and HIV testing in tweets using #HIVPrevention. Strategic responses to these tweets that provide information about where to get tested or how to obtain PrEP may be potential approaches to reduce HIV incidence.

The impact of COVID-19 on fertility behaviour and intentions in a middle income country.

The COVID Pandemic may affect fertility behaviour and intentions in many ways. Restrictions on service provision reduce access to family planning services and increase fertility in the short term. By contrast, the economic uncertainty brought about by the pandemic and its impact on mental health and well-being may reduce fertility. These various pathways have been explored in the context of high income countries such as the United States and Western Europe, but little is known about middle income countries. In this paper we asses the impact of the COVID pandemic on fertility intentions and behaviour in the Republic of Moldova, a middle income country in Eastern Europe, using the Generations and Gender Survey. This survey was conducted partially before and partially after the onset of the pandemic in 2020, allowing for detailed comparisons of individual circumstances. The results indicate that the pandemic reduced the used of intrauterine devices, and increased the use of male condoms, but with no overall decrease in contraceptive use. Conversely individuals interviewed after the onset of the pandemic were 34.5% less likely to be trying to conceive, although medium term fertility intentions were unchanged. Indicators therefore suggest that in the medium term fertility intentions may not be affected by the pandemic but restricted access to contraception requiring medical consultation and a decrease in short-term fertility intentions could disrupt short term family planning.

Diverging trends in US male-female condom use by STI risk factors: a nationally representative study.

OBJECTIVE: Condom use behaviours are proximal to recent STI increases in the USA, yet it remains unclear whether the use of condoms has changed over time among unmarried, non-cohabiting young men who have sex with women (MSW) and how this variability is influenced by STI risk factors. METHODS: To examine condom use over time among MSW aged 15-29, we used three cross-sectional surveys from the 2002, 2006-2010 and 2011-2017 National Survey of Family Growth. We estimated weighted percentages, adjusted prevalence ratios (APRs) and 95% confidence intervals (CI) to assess changes in condom use, stratified by whether MSW reported any STI risk factors in the past 12 months (ie, perceived partner non-monogamy, male-to-male sex, sex in exchange for money or drugs, sex partner who injects illicit drugs, or an HIV-positive sex partner). RESULTS: We observed a divergence in trends in condom use at last sex between men aged 15 -29 with STI risk factors in the past 12 months and those without such history. We saw significant declines in condom use from 2002 to 2011-2017 among men with STI risk factors (APR=0.80, 95% CI 0.68 to 0.95), specifically among those aged 15-19 (APR=0.73, 95% CI 0.57 to 0.94) or non-Hispanic white (APR=0.71, 95% CI 0.54 to 0.93). In contrast, trends in condom use among men with no STI factors remained stable or increased. Across all time periods, the most prevalent STI risk factor reported was perception of a non-monogamous female partner (23.0%-26.9%). Post-hoc analyses examined whether condom use trends changed once this variable was removed from analyses, but no different patterns were observed. CONCLUSIONS: While STIs have been increasing, men aged 15-29 with STI risk factors reported a decline in condom use. Rising STI rates may be sensitive to behavioural shifts in condom use among young MSW with STI risk factors.

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)

Changes in contraceptive and sexual behaviours among unmarried young people in Nigeria: Evidence from nationally representative surveys.

CONTEXT: Nigeria is a high-burden country in terms of young people's health. Understanding changes in young people's sexual and reproductive health (SRH) behaviours and the associated factors is important for framing appropriate interventions. OBJECTIVE: This study assessed changes in SRH behaviours of unmarried young people aged 15-24 and associated factors over a ten-year period in Nigeria. DATA AND METHOD: We analysed datasets from Nigeria Demographic and Health Surveys of 2008, 2013 and 2018 to assess changes in inconsistent condom use, non-use of modern contraceptives; multiple sexual partnership; and early sexual debut. Using binary logistic regression, we assessed the association of selected variables with the SRH behaviours. RESULTS: Over four-fifths of unmarried young people (15-24) in Nigeria engaged in at least one risky sexual behaviour in each survey year. The pattern of changes in the four risky SRH behaviours was consistent over the 10-year period, with the highest rates of each behaviour occurring in 2018 while the lowest rates were in 2013, thus indicating an increase in the proportion of respondents engaging in risky sexual behaviours over the study period. Comprehensive HIV/AIDS knowledge, male gender, older age category (20-24), residence in south-west Nigeria, urban residence, higher socio-economic status, secondary/higher education were mostly protective against the four SRH variables analysed across the different data waves. CONCLUSION: Addressing the high and increasing level of risky SRH behaviours among young people in Nigeria is imperative to improve overall national health status and to ensure progress towards achieving SDG target 3.7 focusing on SRH.

Efectividad de las intervenciones estructurales para la promoción del uso del preservativo en adolescentes y jóvenes: revisión sistemática / Effectiveness of structural interventions to promote condom use in adolescents and young people: Systematic Review

RESUMEN Objetivo Evaluar la efectividad de las intervenciones de tipo estructural o multicomponente dirigidas al incremento del uso del preservativo en adolescentes y jóvenes, identificar las estrategias que conforman las intervenciones evaluadas y reconocer los modelos teóricos que sustentan dichas intervenciones. Metodología Diseño: revisión sistemática de la literatura. Fuente de datos: se consultaron las bases de datos MEDLINE vía OVID, Embase y CENTRAL para buscar estudios sobre intervenciones dirigidas al incremento del uso del preservativo en adolescentes y jóvenes. Selección de estudios: se seleccionaron un total de 7 investigaciones primarias donde se evaluaba el efecto de una intervención estructural o multicomponente para incrementar el uso del preservativo en adolescentes y jóvenes. La calidad de los estudios fue evaluada usando la herramienta para valoración de riesgo de sesgos de Cochrane. Resultados Cinco investigaciones mostraron cambios en los porcentajes del uso del preservativo con valores entre 53 % y el 68 %. Las intervenciones planteadas orientaban sus acciones más a nivel individual con estrategias como: educación sobre salud sexual, consejería en salud reproductiva, conocimientos acerca del preservativo, conocimientos acerca de las ITS/VIH. A nivel organizacional y del entorno iban dirigidas a la provisión de preservativos. Los modelos teóricos planteados en los estudios están centrados en la conducta humana, comportamiento del individuo y el aprendizaje social. Discusión Las intervenciones de tipo estructural que tienen como fin el incremento del uso del preservativo en adolescentes y jóvenes parecen mostrar cambios significativos a nivel individual, pero se desconocen los posibles cambios generados a nivel de la organización y del entorno.(AU)

ABSTRACT Objective Evaluate the effectiveness of structural or multicomponent interventions aimed at increasing the use of condoms in adolescents and young adults, identifying the strategies that form the interventions evaluated, and recognizing the theoretical models that support these interventions. Methodology Design: Systematic review of literature. Data source: MEDLINE databases were consulted via OVID, Embase, and CENTRAL in order to search for studies on interventions aimed at increasing the use of condoms in adolescents and young adults. Selection of studies: A total of 7 primary investigations were selected, in which the effect of a structured or multicomponent intervention to increase the use of condoms in adolescents and young adults was evaluated. The quality of the studies was evaluated using the Cochrane bias risk assessment. Results Five investigations show changes in the percentages of condom use with values between 53% and 68%. The interventions targeted guided their actions more at individual level with strategies such as sexual health education, reproductive health counseling, knowledge about the condom, knowledge about STIs / HIV, than at organizational and environ-mental levels, which were aimed at the provision of condoms. The theoretical models proposed in the studies are focused on human behavior, individual behavior, and social learning. Conclusion Structural interventions that aim to increase the use of condoms in adolescents and young adults seem to show significant changes at individual level, but possible changes generated at both organization and environment levels are unknown.(AU)

Cambios en el calendario de uso de condón masculino en la primera y última relación sexual en distintas cohortes de mujeres / Changes in male condom use at first and last sexual intercourse in different birth cohorts

Resumen: Objetivo: Caracterizar el uso de condón en la primera y última relación sexual en diferentes cohortes para observar posibles diferencias entre grupos generacionales. Material y métodos: Mediante la Encuesta Nacional de Niños, Niñas y Mujeres 2015, representativa a nivel nacional, se ajustaron modelos de regresión Poisson para buscar asociación de variables de interés con el uso del condón en la primera y última relación sexual. Resultados: Las cohortes más jóvenes, con mayor educación y riqueza tienen mayores posibilidades de usar condón en su primera y última relación sexual; hablar lengua indígena se asocia con menores posibilidades de uso en ambos eventos. El uso de condón en el debut sexual incrementa la posibilidad de uso en la última relación sexual. Conclusiones: Existe un cambio generacional en el uso del condón en la primera y última relación sexual entre las más jóvenes. La utilización del condón en el debut sexual favorece su uso posterior.

Abstract: Objective: Characterize the use of condoms in the first and last sexual intercourse in different birth cohorts, to observe possible differences among generations. Materials and methods: Using the National Survey of Boys, Girls and Women, 2015, representative at the national level, we adjust Poisson regression models to find associations between variables of interest and the use of condoms in first and last intercourse. Results: Women from younger cohorts, with higher education and wealth are more likely to use a condom in their first and last sexual intercourse; speaking an indigenous language is associated with a lower likelihood of condom use at both events. Using condom in sexual debut increases the likelihood of using in last intercourse. Conclusions: There is a generational change in condom use at first and last sex among younger cohorts. The use of the condom in sexual debut favors its later use.

Mediation Analysis of Peer Norms, Self-Efficacy, and Condom Use Among Chinese Men Who Have Sex with Men: A Parallel Process Latent Growth Curve Model.

The objective of this study was to examine direct and indirect relationships among peer norms, self-efficacy, and condom use among Chinese men who have sex with men (MSM). A longitudinal study determined the effectiveness of a condom use video promotion among Chinese MSM in 2015. In this analysis, 804 Chinese MSM were recruited at baseline and then followed at 3 weeks and 3 months after the intervention. Parallel process latent growth curve modeling (LGM) with multiple indicators and bootstrapping was conducted using Mplus 7.4. The LGM model fit indexes were good with RMSEA = 0.046, 90% CI (0.044, 0.048), CFI = 0.956, TLI = 0.955. Our results showed that the initial measure of peer norms affected the initial measure of condom use indirectly through the initial measure of self-efficacy (αß = 0.414, 95% CI 0.260-0.759). The rate of change in peer norms over time also significantly affected the rate of change in condom use through the rate of change in self-efficacy (αß = 0.101, 95% CI 0.014-0.262). Self-efficacy mediated the association between peer norms and condom use, indicating a strong potential of causal relationship between peer norms and self-efficacy among Chinese MSM.

Sexual Behavior Patterns and Condom Use in Newly Sexually Active Female University Students.

Our objective was to describe sexual behavior patterns and condom use in newly sexually active female university students. We conducted a 4-year retrospective cohort study (2000-2007) of university women enrolled close to sexual debut (N = 250). Participants reported daily information on intercourse, condom use, and partner/partnership characteristics into Web-based biweekly sexual behavior diaries. We calculated intercourse frequency, proportion of condom-protected events, and incidence of new partner acquisition. We used logistic regression to examine factors associated with condom use at sexual debut; Kaplan-Meier methods to describe cumulative incidence of condom non-use after use at debut; and Cox proportional hazards ratios to examine factors associated with condom non-use. A total of 188 women had at least one male sex partner prior to enrollment or during follow-up. One-third (34.1%) of 27,736 intercourse events were condom-protected. Older age (20+ vs. < 20 years) and use of hormonal birth control were associated with lower likelihood of condom use at sexual debut (adjusted odds ratio [aOR] 0.41, 95% CI 0.17-0.97 and aOR 0.32, 95% CI 0.10-1.03, respectively). Women who reported partners with previous sex partners were less likely to discontinue using condoms after debut (hazard ratio = 0.35, 0.16-0.77) than those reporting partners without previous partners. In college-aged women, older age and hormonal contraceptive use were each inversely associated with condom use at first intercourse. Women with sexually experienced partners were more likely to continue using condoms. Continued efforts are necessary to promote condom use among college-aged women.

[Changes in male condom use at first and last sexual intercourse in different birth cohorts]. / Cambios en el calendario de uso de condón masculino en la primera y última relación sexual en distintas cohortes de mujeres.

OBJECTIVE: Characterize the use of condoms in the first and last sexual intercourse in different birth cohorts, to observe possible differences among generations. MATERIALS AND METHODS: Using the National Survey of Boys, Girls and Women, 2015, representative at the national level, we adjust Poisson regression models to find associations between variables of interest and the use of condoms in first and last intercourse. RESULTS: Women from younger cohorts, with higher education and wealth are more likely to use a condom in their first and last sexual intercourse; speaking an indigenous language is associated with a lower likelihood of condom use at both events. Using condom in sexual debut increases the likelihood of using in last intercourse. CONCLUSIONS: There is a generational change in condom use at first and last sex among younger cohorts. The use of the condom in sexual debut favors its later use.

OBJETIVO: . Caracterizar el uso de condón en la primera y última relación sexual en diferentes cohortes para observar posibles diferencias entre grupos generacionales. MATERIAL Y MÉTODOS: .Mediante la Encuesta Nacional de Niños, Niñas y Mujeres 2015, representativa a nivel nacional, se ajustaron modelos de regresión Poisson para buscar asociación de variables de interés con el uso del condón en la primera y última relación sexual. RESULTADOS: Las cohortes más jóvenes, con mayor educación y riqueza tienen mayores posibilidades de usar condón en su primera y última relación sexual; hablar lengua indígena se asocia con menores posibilidades de uso en ambos eventos. El uso de condón en el debut sexual incrementa la posibilidad de uso en la última relación sexua. CONCLUSIONES: Existe un cambio generacional en el uso del condón en la primera y última relación sexual entre las más jóvenes. La utilización del condón en el debut sexual favorece su uso posterior.

Changes in contraceptive use and method mix in India: 1992-92 to 2015-16.

OBJECTIVE: Contraceptive use is subject of scientific interest for its contribution to reduced fertility and improved maternal and child health in India. This study answers the changes in method mix and the influence of factors associated with contraceptive use in India during 1992-93 to 2015-16. METHODS: The study used data from all the four rounds of National Family Health Survey (NFHS) conducted during 1992-93 to 2015-16. Binary logistic regression was conducted in the pooled data of contraceptive users of four rounds of the survey to examine the adjusted contribution of various contraceptive methods over time. Also analysed the determinants of contraceptive use in 1992-93 and 2015-16. The pooled data of 1992-93 and 2015-16 was used to explore the change in users through creating interaction between time and predictors. STATA (V 13) was used for analyses and result was reported at 5 percent level of significance. RESULTS: Female sterilization continued to dominate the contraceptive method mix, use of pills and condoms had considerably increased, and traditional method use had remained almost unchanged during 1992-93 to 2015-16. Age, education, surviving son, religion, social group, household size, region, and economic condition of the woman remained as significant determinants of contraceptive use during the study period. CONCLUSION: Contraceptive use, method mix, the profile of the users, and determinants of contraceptive use has changed significantly during 1992-93 to 2015-16 in India. Increased use of modern spacing methods albeit continuous dominance of female sterilization in method mix suggests relooking at the family planning implementation strategy.

Historia del condón y otros métodos anticonceptivos / History of condoms and other contraceptive methods

El uso del condón es un método eficaz para prevenir enfermedades venéreas y un embarazo no deseado. Años atrás se puede apreciar cómo se debate dónde y cómo los llamados dispositivos intrauterinos fueron utilizados por primera vez. La siguiente investigación se realizó con el objetivo de explicar el surgimiento y la evolución del condón y otros métodos anticonceptivos, para ello se utilizaron un total de 15 referencias bibliográficas. Es indudable que la anticoncepción tiene que figurar como elemento básico de la atención en medicina, el conocimiento de sus orígenes, historia y evolución es fundamental. (AU)

The use of the condom is an effective method to prevent venereal diseases and an unwanted pregnancy. Years ago you can see how it is discussed where and how the so-called intrauterine devices were used for the first time. The following investigation was carried out with the objective of explaining the emergence and evolution of the condom and other contraceptive methods, for which a total of 15 bibliographical references were used. Undoubtedly, contraception must figure as a basic element of medical care, knowledge of its origins, history and evolution is fundamental. (AU)

Historia del condón y otros métodos anticonceptivos / History of condoms and other contraceptive methods

El uso del condón es un método eficaz para prevenir enfermedades venéreas y un embarazo no deseado. Años atrás se puede apreciar cómo se debate dónde y cómo los llamados dispositivos intrauterinos fueron utilizados por primera vez. La siguiente investigación se realizó con el objetivo de explicar el surgimiento y la evolución del condón y otros métodos anticonceptivos, para ello se utilizaron un total de 15 referencias bibliográficas. Es indudable que la anticoncepción tiene que figurar como elemento básico de la atención en medicina, el conocimiento de sus orígenes, historia y evolución es fundamental. (AU)

The use of the condom is an effective method to prevent venereal diseases and an unwanted pregnancy. Years ago you can see how it is discussed where and how the so-called intrauterine devices were used for the first time. The following investigation was carried out with the objective of explaining the emergence and evolution of the condom and other contraceptive methods, for which a total of 15 bibliographical references were used. Undoubtedly, contraception must figure as a basic element of medical care, knowledge of its origins, history and evolution is fundamental. (AU)

Historical and Developmental Changes in Condom Use Among Young Men Who Have Sex with Men Using a Multiple-Cohort, Accelerated Longitudinal Design.

Young men who have sex with men (YMSM) have the highest HIV incidence in the U.S. The last 5 years has seen emergence of new methods for HIV prevention and societal shifts in gay rights. It is important to understand if there have been generational shifts in condom use during the developmental transition from adolescents to young adulthood. To disentangle history from development, we require a multiple-cohort, longitudinal design-a methodology never before applied to study YMSM. We followed three cohorts of YMSM recruited in 2007, 2010, and 2015 (N = 1141) from the ages of 17-26 years and modeled their longitudinal change over time in counts of anal sex acts and the ratio of condomless anal sex (CAS) acts to anal sex acts using latent curve growth modeling. We found that there was no significant developmental change in raw counts of anal sex acts, but there was a significant decline in the ratio of anal sex acts that were condomless. We also found significantly different patterns for ratio of CAS acts for the 2015 cohort. The 2015 cohort reported a significantly lower ratio of CAS acts at age 17, but significantly higher growth in ratio of CAS acts over development. The present study suggests that YMSM recruited in 2015 have very different trajectories of CAS compared to previous cohorts, including lower risk in late adolescence, but with the potential for higher risk after the transition into adulthood.

Contraceptive Initiation Among Women in the United States: Timing, Methods Used, and Pregnancy Outcomes.

BACKGROUND: Timely contraceptive initiation is increasingly common, yet population trends by method and among subgroups with increased risk of unintended pregnancy are not well described. The impact of timing and type of contraceptive initiation on risk of unwanted pregnancy is unknown. METHODS: We used nationally representative cross-sectional data from 4 cycles of the National Survey of Family Growth, 2002-2015. We calculated outcomes from self-reported dates of sexual debut, contraceptive initiation, and unwanted pregnancy. We compared trends in timely contraceptive initiation (within 1 month of sexual debut) by method and by race and/or ethnicity and income. Using multivariable regression, we identified predictors of delayed contraceptive initiation. We compared the risk of unwanted pregnancy for delayed versus timely contraceptive initiation. RESULTS: We analyzed responses from 26 359 women with sexual debuts in 1970-2014. One in 5 overall and 1 in 4 African American, Hispanic, or low-income respondents reported delayed contraceptive initiation, which was associated with unwanted pregnancy within 3 months of sexual debut (adjusted risk ratio 3.7 versus timely contraceptive initiation; 99.9% confidence interval: 2.3-5.9; P < .001). Timely contraceptive initiation with less effective versus effective methods was not associated with unwanted pregnancy within 3 months. CONCLUSIONS: Delayed contraceptive initiation is more common among African American, Hispanic, and low-income women and is strongly associated with short-term risk of unwanted pregnancy. Pediatricians play a key role in making timely contraception available to adolescents at or before sexual debut. More research is needed to understand the importance of early contraceptive methods on pregnancy risk.

Need for Intervention Services for Promotion of Condom Use by Female Sex Workers to Consider Size of Entertainment Venues: A Cross-Sectional Study.

BACKGROUND Consistent condom use among female sex workers (FSWs) is a key intervention in China's AIDS Control Program. Female sex workers (FSWs) in China are at increased risk for acquiring HIV/AIDS because of low knowledge about HIV transmission and inconsistent use of condoms, the grade of venues may play a role in HIV/AIDS-related knowledge and consistent condom use of female sex workers. MATERIAL AND METHODS A cross-sectional study was conducted among 802 FSWs in 2016 in Fuyang, China. A self-administered questionnaire was used to assess whether there is a need of different intervention services promotion of consistent condom use among FSWs in different-grade entertainment venues. RESULTS Multivariate logistic regression analysis indicated that knowledge scores of HIV transmission routes and peer education were associated with consistent condom use in large-size venues, while peer education was associated with consistent condom use in mid-size venues. Knowledge scores of HIV non-transmission routes, knowledge scores of AIDS prevention/control, and peer education were associated with consistent condom use in small venues. CONCLUSIONS Our data suggested that the strategies for strengthen interventions on health benefits of consistent condom use of FSWs should differ by size of venue.

Bareback Sexually Explicit Media Consumption and Men Who Have Sex with Men's Responses to Sexual Partners Who Prefer Anal Intercourse With or Without Condoms.

This study investigated whether "bareback" (i.e., condomless) sexually explicit media (SEM) consumption is differentially associated with men who have sex with men's (MSM) concerns about, and willingness to have, condomless anal intercourse (CAI) versus anal intercourse with condoms. Participants were 659 Australian MSM who all reported their bareback SEM consumption and read a vignette in which they were propositioned for sex by a hypothetical male target. Participants were randomly assigned to one of four vignettes, in which the target exclusively preferred either CAI or anal intercourse with condoms, and either did or did not disclose that they took pre-exposure prophylaxis (PrEP). Perceived partner attractiveness was also measured as a potential moderator. Greater bareback SEM consumption was associated with reduced concerns about, and intentions to have, sex with a target who exclusively preferred CAI. Bareback SEM consumption, however, was not related to concerns about, or intentions to have, sex with a target who exclusively preferred anal intercourse with condoms. PrEP disclosure was not causally related to either concern about having, or intentions to have, sex with the target, nor did it moderate the relationship between bareback SEM consumption and these outcomes. Perceived partner attractiveness moderated the effect of bareback SEM consumption on general sexual intentions, such that bareback SEM was only associated with greater intentions to have sex when the partner was perceived to be highly attractive.

Fatores associados ao não uso de preservativo e prevalência de HIV, hepatites virais B e C e sífilis: estudo transversal em comunidades rurais de Ouro Preto, Minas Gerais, entre 2014 e 2016 / Factores asociados al hábito de no uso del preservativo y prevalencia del VIH, hepatitis virales B y C y sífilis: estudio transversal en comunidades rurales de Ouro Preto, Minas Gerais, Brasil, 2014-2016 / Factors associated with non-use of condoms and prevalence of HIV, viral hepatitis B and C and syphilis: a cross-sectional study in rural communities in Ouro Preto, Minas Gerais, Brazil, 2014-2016

Objetivo: analisar os fatores sociodemográficos relacionados ao não uso do preservativo nas relações sexuais e a prevalência de infecções sexualmente transmissíveis (IST) em comunidades rurais de Ouro Preto, Minas Gerais, Brasil, entre 2014 e 2016. Métodos: foram coletados dados de entrevista individual e realizados testes rápidos; as associações foram testadas pelo modelo de regressão de Poisson, com intervalo de confiança de 95% (IC95%). Resultados: foram detectados 3,8 casos/10 mil habitantes de hepatite B e sífilis, e 1,3/10 mil hab. de hepatite C; não foram detectados casos de HIV; na análise multivariada, foram encontradas maiores prevalências de não uso de preservativos entre indivíduos casados/em união estável/viúvos (RP=1,20 - IC95% 1,06;1,36). Conclusão: o grupo com maior prevalência de não uso de preservativo é o de pessoas com relacionamento fixo; novos casos de sífilis e de hepatites virais foram detectados pelo teste rápido, aplicado no inquérito.

Objetivo: investigar el perfil sociodemográfico asociado al no uso del preservativo en las relaciones sexuales y describir la prevalencia de infecciones de transmisión sexual (ITS) en comunidades rurales de Ouro Preto, Minas Gerais, Brasil, entre 2014 y 2016. Métodos: se recolectaron datos en entrevista individual y se realizaron pruebas rápidas; las asociaciones fueron analizadas por la regresión de Poisson, con intervalo de confianza de 95% (IC95%). Resultados: se detectaron 3,8 casos/10 mil habitantes de hepatitis B y sífilis, y 1,3/10 mil habitantes de hepatitis C; no se detectaron casos de VIH; el análisis multivariado mostró mayor prevalencia de no uso del preservativo para personas casadas /en unión estable/viudos (RP=1,20 - IC95% 1,06;1,36). Conclusión: se detectaron nuevos casos de sífilis y hepatitis virales por las pruebas rápidas en esta investigación; el grupo de mayor riesgo de no usar preservativo fue de personas casadas/con relación fija.

Objective: to investigate socio-demographic factors associated with non-use of condoms, and to describe the prevalence of sexually transmitted infections (STI) in rural communities of Ouro Preto, Minas Gerais, Brazil, 2014 to 2016. Methods: data were gathered from individual interviews and rapid tests were performed; associations were tested using Poisson regression, with a 95% confidence interval (95%CI). Results: we detected 3.8 cases/10,000 inhabitants for hepatitis B and syphilis, and 1.3 cases/10,000 inhabitants for hepatitis C; no HIV cases were detected; in the multivariate analysis we found higher prevalence rates of condom non-use among the group of individuals who were married, had common law partners or were widowed (PR=1.20 - 95%CI 1.06;1.36). Conclusion: individuals in a stable relationship formed the group with the highest prevalence rate of condom non-use; new syphilis and viral hepatitis cases were detected using rapid tests during the survey.

Population-level sexual behaviours in adolescent girls before and after introduction of the human papillomavirus vaccine (2003-2013).

BACKGROUND: The human papillomavirus (HPV) vaccine is delivered widely through school-based immunization programs. Some groups have expressed concern that HPV vaccination programs will result in an increase in sexual risk-taking behaviours among adolescents. We aimed to evaluate population-level changes in sexual behaviours before and after implementation of the school-based HPV vaccination program in British Columbia. METHODS: In 2008, a school-based HPV vaccination program for girls was introduced in British Columbia. Using data from the BC Adolescent Health Survey - a longitudinal provincial survey administered in schools to capture adolescent physical and emotional health indicators, we conducted a linear trend analysis on sexual health behaviours and risk factors in adolescent girls before and after the implementation of vaccination for HPV (2003, 2008 and 2013). RESULTS: We analyzed data for 298 265 girls who self-identified as heterosexual. The proportion of girls reporting ever having sexual intercourse decreased from 21.3% (2003) to 18.3% (2013; adjusted odds ratio [OR] 0.79). Self-report of sexual intercourse before the age of 14 years decreased significantly from 2008 to 2013 (adjusted OR 0.76), as did reported substance use before intercourse (adjusted OR for 2003-2013 0.69). There was no significant change in the number of sexual partners reported (2003-2013). Between 2003 and 2013, girls' reported use of contraception and condoms increased, while pregnancy rates decreased. INTERPRETATION: Since the implementation of school-based HPV vaccination program in BC, sexual risk behaviours reported by adolescent girls either reduced or stayed the same. These findings contribute evidence against any association between HPV vaccination and risky sexual behaviours.