cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.23648316
title: Use of HIV prevention methods and contexts of the sexual practices of adolescent gay and bisexual men, travestis, and transgender women in São Paulo, Brazil

description: We aimed to understand the perspective and use of HIV prevention methods in context of the sexual practices of adolescent gay and bisexual men, travestis, and transgender women (TGW). In-depth interviews and focus group discussions were conducted with 22 adolescent gay and bisexual men, travestis, and TGW aged between 15 and 19 years in São Paulo, Brazil, as part of the formative research of the PrEP1519 study, an ongoing daily oral pre-exposure prophylaxis (PrEP) demonstration study among adolescents. Participants’ knowledge repertoire about prevention methods and their experience with them concentrated on condoms, which were regarded as the most well-known, “compulsory” practice, whose use was an individual responsibility. Prior HIV/STI testing was reported by a few participants as a measure to decide to discontinue condom use in stable relationships, whereas seeking testing after condomless sex was an attempt to repair a “failure” in prevention. The importance of commercial sex was striking among TGW and travestis, in which condom use often depended on clients’ decision, and drug use and risk of violence hindered decision-making and self-care. Adolescents showed little knowledge, frequent confusion, and no experience with post-exposure prophylaxis and PrEP. An incipient appropriation of the diversity of prevention methods and a rigid normativity about the use of condoms are key drivers in adolescents’ perception and use of HIV prevention methods. Adolescents’ risk management seems to be restricted in terms of their autonomy and ability to assess exposure across contexts, failing to include antiretroviral-based (ARV) methods, thus requiring tailored and context-sensitive strategies for an effective combination prevention approach.
DOI: 10.6084/m9.figshare.23648316.v1
title: Use of HIV prevention methods and contexts of the sexual practices of adolescent gay and bisexual men, travestis, and transgender women in São Paulo, Brazil

description: We aimed to understand the perspective and use of HIV prevention methods in context of the sexual practices of adolescent gay and bisexual men, travestis, and transgender women (TGW). In-depth interviews and focus group discussions were conducted with 22 adolescent gay and bisexual men, travestis, and TGW aged between 15 and 19 years in São Paulo, Brazil, as part of the formative research of the PrEP1519 study, an ongoing daily oral pre-exposure prophylaxis (PrEP) demonstration study among adolescents. Participants’ knowledge repertoire about prevention methods and their experience with them concentrated on condoms, which were regarded as the most well-known, “compulsory” practice, whose use was an individual responsibility. Prior HIV/STI testing was reported by a few participants as a measure to decide to discontinue condom use in stable relationships, whereas seeking testing after condomless sex was an attempt to repair a “failure” in prevention. The importance of commercial sex was striking among TGW and travestis, in which condom use often depended on clients’ decision, and drug use and risk of violence hindered decision-making and self-care. Adolescents showed little knowledge, frequent confusion, and no experience with post-exposure prophylaxis and PrEP. An incipient appropriation of the diversity of prevention methods and a rigid normativity about the use of condoms are key drivers in adolescents’ perception and use of HIV prevention methods. Adolescents’ risk management seems to be restricted in terms of their autonomy and ability to assess exposure across contexts, failing to include antiretroviral-based (ARV) methods, thus requiring tailored and context-sensitive strategies for an effective combination prevention approach.
DOI: 10.6084/m9.figshare.21835242
title: Combined legume and non-legume residues management improve soil organic matter on an Oxisol in Brazil

description: ABSTRACT Understanding soil organic matter (SOM) dynamics in production systems on tropical soils is necessary to guide strategies to increase SOM formation. This study aimed to evaluate soil carbon (C) dynamics by combining applications of different plant residues used on tropical soils. An incubation study was carried out with and without adding millet (Pennisetum americanum) residues combined with six crop residues (legumes and non-legumes); and one additional treatment with only millet residue. Higher C-CO2 fluxes recorded in jack bean, sunflower and velvet bean residues were correlated with high soluble compound contents (49.5, 49.6 and 32.1 %, respectively). Adding millet residues resulted in positive PE for all residue combinations. Soils without millet, except jack bean, had a negative PE. Residues application promoted four times increase in C-POM content (from 1.04 to 4.2 g kg-1 soil). The C-MAOM content had 2.4 times increase, being more expressive due to its high initial content (from 15.3 to 37.3 g kg-1 soil). The comparison between the final C contents in the SOM fractions showed a significant increase of 8.8 times for MAOM in relation to POM, demonstrating the larger dimension of this C reservoir in the soil. Both combinations of legumes + non-legumes and non-legume + non-legume contributed significantly to the conversion of C to MAOM. The results give insight into possible management strategies for significant C increments in the more stable SOM fractions, depending on the residue type (quality) and residue combination.
DOI: 10.6084/m9.figshare.21835242.v1
title: Combined legume and non-legume residues management improve soil organic matter on an Oxisol in Brazil

description: ABSTRACT Understanding soil organic matter (SOM) dynamics in production systems on tropical soils is necessary to guide strategies to increase SOM formation. This study aimed to evaluate soil carbon (C) dynamics by combining applications of different plant residues used on tropical soils. An incubation study was carried out with and without adding millet (Pennisetum americanum) residues combined with six crop residues (legumes and non-legumes); and one additional treatment with only millet residue. Higher C-CO2 fluxes recorded in jack bean, sunflower and velvet bean residues were correlated with high soluble compound contents (49.5, 49.6 and 32.1 %, respectively). Adding millet residues resulted in positive PE for all residue combinations. Soils without millet, except jack bean, had a negative PE. Residues application promoted four times increase in C-POM content (from 1.04 to 4.2 g kg-1 soil). The C-MAOM content had 2.4 times increase, being more expressive due to its high initial content (from 15.3 to 37.3 g kg-1 soil). The comparison between the final C contents in the SOM fractions showed a significant increase of 8.8 times for MAOM in relation to POM, demonstrating the larger dimension of this C reservoir in the soil. Both combinations of legumes + non-legumes and non-legume + non-legume contributed significantly to the conversion of C to MAOM. The results give insight into possible management strategies for significant C increments in the more stable SOM fractions, depending on the residue type (quality) and residue combination.
DOI: 10.6084/m9.figshare.23648213
title: Prevalence of syphilis and sexual behavior and practices among adolescents MSM and TrTGW in a Brazilian multi-center cohort for daily use of PrEP

description: Syphilis has reemerged as a serious public health problem in Brazil and worldwide, disproportionately affecting men who have sex with men (MSM) and travestis and transgender women (TrTGW). Studies on sexually transmitted infections (STI) in adolescents from these key populations are relatively scarce. This is a Brazilian multi-center, cross study with prevalence analysis, using as baseline the PrEP1519 cohort of sexually active MSM and TrTGW adolescents, recruited from April 2019 to December 2020. Analyses were made using the dimensions of vulnerability to STI/HIV and logistic regression models were conducted to estimate the odds ratios of the association between the predictor variables and positive treponemal test for syphilis at the moment of entry in the study. In total, 677 participants were analyzed; participants’ median age was 18.9 years (IQR: 18.1-19.5); 70.5% (477) self-declared as black; 70.5% (474), as homosexuals/gays; and 48 (7.1%), as trans women or travestis. The baseline prevalence of syphilis was 21.3%. In the final logistic regression model, higher chance of syphilis was associated with: self-reported episode of STI in the last 12 months (OR = 5.92; 95%CI: 3.74-9.37), sex worker (OR = 3.39; 95%CI: 1.32-8.78), and &lt; 11 years of schooling (OR = 1.76; 95%CI: 1.13-2.74). The prevalence of syphilis among MSM/TrTGW adolescents aged from 15 to 19 years was alarming, much higher than the described for the general population within this age range and associated with vulnerability factors. This reinforces the urgent need to strengthen public health programs to debate about race, gender, sexuality, and prevention.
DOI: 10.6084/m9.figshare.23648213.v1
title: Prevalence of syphilis and sexual behavior and practices among adolescents MSM and TrTGW in a Brazilian multi-center cohort for daily use of PrEP

description: Syphilis has reemerged as a serious public health problem in Brazil and worldwide, disproportionately affecting men who have sex with men (MSM) and travestis and transgender women (TrTGW). Studies on sexually transmitted infections (STI) in adolescents from these key populations are relatively scarce. This is a Brazilian multi-center, cross study with prevalence analysis, using as baseline the PrEP1519 cohort of sexually active MSM and TrTGW adolescents, recruited from April 2019 to December 2020. Analyses were made using the dimensions of vulnerability to STI/HIV and logistic regression models were conducted to estimate the odds ratios of the association between the predictor variables and positive treponemal test for syphilis at the moment of entry in the study. In total, 677 participants were analyzed; participants’ median age was 18.9 years (IQR: 18.1-19.5); 70.5% (477) self-declared as black; 70.5% (474), as homosexuals/gays; and 48 (7.1%), as trans women or travestis. The baseline prevalence of syphilis was 21.3%. In the final logistic regression model, higher chance of syphilis was associated with: self-reported episode of STI in the last 12 months (OR = 5.92; 95%CI: 3.74-9.37), sex worker (OR = 3.39; 95%CI: 1.32-8.78), and &lt; 11 years of schooling (OR = 1.76; 95%CI: 1.13-2.74). The prevalence of syphilis among MSM/TrTGW adolescents aged from 15 to 19 years was alarming, much higher than the described for the general population within this age range and associated with vulnerability factors. This reinforces the urgent need to strengthen public health programs to debate about race, gender, sexuality, and prevention.
DOI: 10.6084/m9.figshare.23648273
title: Building bridges to care: the experience of peer navigation in enabling linkage to PrEP for adolescent men who have sex with men and transgender women

description: Vulnerable populations are at increased risk for HIV/AIDS, especially adolescent men who have sex with men (AMSM) and adolescent travestis and transgender women (ATGW). Pre-exposure prophylaxis (PrEP) is one component of combination HIV prevention and is already available for these populations in Brazil. However, ensuring its uptake entails certain challenges since inequality and barriers have traditionally marked access and linkage to the related public health services. Peer navigation could be a way of mediating the linkage process because it involves peers keeping track of others’ care schedules, dynamically fostering linkage to care according to the needs of users and the actors involved in their everyday care contexts. Therefore, this study proposes analyzing peer-navigator-mediated linkage to PrEP care for 15- to 19-year-old MSM and transgender women from the PrEP1519 project in Salvador, Bahia State, Brazil. In total, 15 field notebooks/diaries, written in April-July 2019, by four peer navigators were analyzed, as were the transcripts of one focal group and 20 semi-structured interviews with adolescents (17 MSM and three trans women) between June and December 2019. Linkage via peer navigator and participant is influenced by emotional dynamics and shared personal characteristics. It is fluid and unstable and calls for care practices to be shaped to meet each participant’s needs. For peer navigation to be adopted as a care strategy for sexually transmitted infection prevention and treatment, it should envisage not only increased linkage to care but also sensitivity to service users’ specific characteristics and lived experiences.
DOI: 10.6084/m9.figshare.23648273.v1
title: Building bridges to care: the experience of peer navigation in enabling linkage to PrEP for adolescent men who have sex with men and transgender women

description: Vulnerable populations are at increased risk for HIV/AIDS, especially adolescent men who have sex with men (AMSM) and adolescent travestis and transgender women (ATGW). Pre-exposure prophylaxis (PrEP) is one component of combination HIV prevention and is already available for these populations in Brazil. However, ensuring its uptake entails certain challenges since inequality and barriers have traditionally marked access and linkage to the related public health services. Peer navigation could be a way of mediating the linkage process because it involves peers keeping track of others’ care schedules, dynamically fostering linkage to care according to the needs of users and the actors involved in their everyday care contexts. Therefore, this study proposes analyzing peer-navigator-mediated linkage to PrEP care for 15- to 19-year-old MSM and transgender women from the PrEP1519 project in Salvador, Bahia State, Brazil. In total, 15 field notebooks/diaries, written in April-July 2019, by four peer navigators were analyzed, as were the transcripts of one focal group and 20 semi-structured interviews with adolescents (17 MSM and three trans women) between June and December 2019. Linkage via peer navigator and participant is influenced by emotional dynamics and shared personal characteristics. It is fluid and unstable and calls for care practices to be shaped to meet each participant’s needs. For peer navigation to be adopted as a care strategy for sexually transmitted infection prevention and treatment, it should envisage not only increased linkage to care but also sensitivity to service users’ specific characteristics and lived experiences.
DOI: 10.6084/m9.figshare.23648223
title: Unwillingness to prescribe PrEP by health care professionals of specialized HIV/AIDS services in Northeastern Brazil

description: This study aimed to analyze factors associated with the unwillingness to prescribe pre-exposure prophylaxis (PrEP) by health care professionals of specialized HIV/AIDS services. This is a cross-sectional study with 252 health care professionals in 29 specialized care services (SCSs) in HIV/AIDS in 21 municipalities in the state of Bahia, Brazil. The inclusion criterion was that the professional had worked for at least six months in the service. Sociodemographic, occupational, and behavioral data were collected using a questionnaire. Logistic regression was performed with an estimation of crude and adjusted odds ratio (OR) and respective 95% confidence intervals (95%CI). The unwillingness to prescribe PrEP was 15.2% (95%CI: 10.8-19.6). The factors associated with unwillingness to prescribe PrEP were non-prescription of HIV self-tests for key populations (adjustedOR = 5.4; 95%CI: 1.3-22.4) nor post-exposure prophylaxis (adjustedOR = 2.00; 95%CI: 1.3-3.1), location of the SCS in the state capital (adjustedOR = 3.9; 95%CI: 1.4-10.2), and SCSs without PrEP offer (adjustedOR = 1.7; 95%CI: 1.1-2.8); professionals who have not reported the need to conduct training and courses (adjustedOR = 1.3; 95%CI: 1.1-1.8), or training with more experienced professionals (adjustedOR = 1.8; 95%CI: 1.1-3.8), was associated with a lower proportion of unwillingness to prescribe PrEP. Our results indicate that health care professionals’ contextual, organizational, and training factors can contribute to PrEP indication. We suggest expanding ongoing training in combined HIV prevention among health care professionals and increasing the availability of PrEP in health services.
DOI: 10.6084/m9.figshare.23648223.v1
title: Unwillingness to prescribe PrEP by health care professionals of specialized HIV/AIDS services in Northeastern Brazil

description: This study aimed to analyze factors associated with the unwillingness to prescribe pre-exposure prophylaxis (PrEP) by health care professionals of specialized HIV/AIDS services. This is a cross-sectional study with 252 health care professionals in 29 specialized care services (SCSs) in HIV/AIDS in 21 municipalities in the state of Bahia, Brazil. The inclusion criterion was that the professional had worked for at least six months in the service. Sociodemographic, occupational, and behavioral data were collected using a questionnaire. Logistic regression was performed with an estimation of crude and adjusted odds ratio (OR) and respective 95% confidence intervals (95%CI). The unwillingness to prescribe PrEP was 15.2% (95%CI: 10.8-19.6). The factors associated with unwillingness to prescribe PrEP were non-prescription of HIV self-tests for key populations (adjustedOR = 5.4; 95%CI: 1.3-22.4) nor post-exposure prophylaxis (adjustedOR = 2.00; 95%CI: 1.3-3.1), location of the SCS in the state capital (adjustedOR = 3.9; 95%CI: 1.4-10.2), and SCSs without PrEP offer (adjustedOR = 1.7; 95%CI: 1.1-2.8); professionals who have not reported the need to conduct training and courses (adjustedOR = 1.3; 95%CI: 1.1-1.8), or training with more experienced professionals (adjustedOR = 1.8; 95%CI: 1.1-3.8), was associated with a lower proportion of unwillingness to prescribe PrEP. Our results indicate that health care professionals’ contextual, organizational, and training factors can contribute to PrEP indication. We suggest expanding ongoing training in combined HIV prevention among health care professionals and increasing the availability of PrEP in health services.
DOI: 10.6084/m9.figshare.23648363
title: When prevention is the best remedy: HIV pre-exposure prophylaxis (PrEP) among adolescents gays and transgender women in Belo Horizonte, Minas Gerais State, Brazil

description: Based on the incorporation of pre-exposure prophylaxis (PrEP) as an HIV prevention strategy and considering the need to comprehend the use of medication among young people, this article analyzes narratives of gay men and transgender women from Belo Horizonte, Minas Gerais State, Brazil, participating in the PrEP1519 study. This is a qualitative research, based on the interpretative anthropology, developed by 10 in-depth interviews with PrEP users followed-up for at least three months between October and November 2019. The results showed that the drug was seen as the main motivation for participating in the study and as a strategy combined with the use of condoms, whether as additional prevention, or assuming the leading role. The medication revealed signs built by the gender performances and their relation to other medications, especially the experience of trans girls in hormonal therapy. Regarding the socialization of the use of PrEP, the narratives showed that there was no secret between the couples, which did not meant that stigmas on the association with HIV did not exist, mainly in the virtual context. In the family environment, they reported questions about the preventive function of the medication and the voluntary nature of the participation in the study. The youth’s narratives revealed plural meanings of the medication and its social use, composing both the boys’ and girls’ performances. The signs attributed to the medication indicated that in addition to maintenance of health, the medication improves life and sexual freedom.
DOI: 10.6084/m9.figshare.23648363.v1
title: When prevention is the best remedy: HIV pre-exposure prophylaxis (PrEP) among adolescents gays and transgender women in Belo Horizonte, Minas Gerais State, Brazil

description: Based on the incorporation of pre-exposure prophylaxis (PrEP) as an HIV prevention strategy and considering the need to comprehend the use of medication among young people, this article analyzes narratives of gay men and transgender women from Belo Horizonte, Minas Gerais State, Brazil, participating in the PrEP1519 study. This is a qualitative research, based on the interpretative anthropology, developed by 10 in-depth interviews with PrEP users followed-up for at least three months between October and November 2019. The results showed that the drug was seen as the main motivation for participating in the study and as a strategy combined with the use of condoms, whether as additional prevention, or assuming the leading role. The medication revealed signs built by the gender performances and their relation to other medications, especially the experience of trans girls in hormonal therapy. Regarding the socialization of the use of PrEP, the narratives showed that there was no secret between the couples, which did not meant that stigmas on the association with HIV did not exist, mainly in the virtual context. In the family environment, they reported questions about the preventive function of the medication and the voluntary nature of the participation in the study. The youth’s narratives revealed plural meanings of the medication and its social use, composing both the boys’ and girls’ performances. The signs attributed to the medication indicated that in addition to maintenance of health, the medication improves life and sexual freedom.
DOI: 10.6084/m9.figshare.23648198
title: Factors associated to HIV prevalence among adolescent men who have sex with men in Salvador, Bahia State, Brazil: baseline data from the PrEP1519 cohort

description: Adolescent men who have sex with men (AMSM) are at a heightened vulnerability for human immunodeficiency virus (HIV). This study aimed to estimate the prevalence of HIV and associated individual, social, and programmatic factors among AMSM in Salvador, Bahia State, Brazil. This is a cross-sectional study which analyzed baseline data from the PrEP1519 cohort in Salvador. Descriptive, bivariate, and multivariate analyses were conducted using the dimensions of vulnerability to HIV as hierarchical levels of analysis. Logistic regression models were used to estimate the odds ratios (OR) of the association between predictor variables and HIV infection. The prevalence of HIV infection among the 288 AMSM recruited to the project was 5.9% (95%CI: 3.7-9.3). Adjusted analysis showed a statistically significant association between self-identifying as a sex worker (OR = 3.74, 95%CI: 1.03-13.60) and HIV infection. Other associations with borderline statistical significance were the use of application programs to find sexual partners (OR = 3.30, 95%CI: 0.98-11.04), low schooling level (OR = 3.59, 95%CI: 0.96-13.41), failing to be hired or being dismissed from a job because of sexual orientation (OR = 2.88, 95%CI: 0.89-9.28), and not using health services as a usual source of care (OR = 3.14, 95%CI: 0.97-10.17). We found a high HIV prevalence among AMSM in Salvador. Furthermore, our study found that individual, social, and programmatic factors were associated with HIV infection among these AMSM. We recommend intensifying HIV combined-prevention activities for AMSM.