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This qualitative study examined sex work among internally displaced male and transgender female sex workers in Bogotá, Colombia. Internal displacement has occurred in Colombia as a result of decades of conflict among armed groups and has created large-scale migration from rural to urban areas. Informed by the polymorphous model of sex work, which posits that contextual conditions shape the experience of sex work, we examined three main research questions. The first dealt with how internal displacement was related to the initiation of sex work; the second concerned the effect of agency on sex worker satisfaction; and the third examined how sex work in this context was related to HIV and other risks. Life history interviews were conducted with 26 displaced individuals who had done sex work: 14 were men who have sex with men and 12 were transgender women (natal males). Findings revealed that many participants began doing sex work in the period immediately after displacement, because of a lack of money, housing, and social support. HIV risk was greater during this time due to limited knowledge of HIV and inexperience negotiating safer sex with clients. Other findings indicated that sex workers who exerted more control and choice in the circumstances of their work reported greater satisfaction. In addition, we found that although many sex workers insisted on condom use with clients, several noted that they would sometimes have unprotected sex for additional money. Specific characteristics affecting the experience of sex work among the transgender women were also discussed.  相似文献   

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Objectives. We estimated HIV prevalence among men who have sex with men (MSM) and transgender women in Bogotá, Colombia, and explored differences between HIV-positive individuals who are aware and unaware of their serostatus.Methods. In this cross-sectional 2011 study, we used respondent-driven sampling (RDS) to recruit 1000 MSM and transgender women, who completed a computerized questionnaire and received an HIV test.Results. The RDS-adjusted prevalence was 12.1% (95% confidence interval [CI] = 8.7, 15.8), comparable to a previous RDS-derived estimate. Among HIV-positive participants, 39.7% (95% CI = 25.0, 54.8) were aware of their serostatus and 60.3% (95% CI = 45.2, 75.5) were unaware before this study. HIV-positive–unaware individuals were more likely to report inadequate insurance coverage, exchange sex (i.e., sexual intercourse in exchange for money, goods, or services), and substance use than other participants. HIV-positive–aware participants were least likely to have had condomless anal intercourse in the previous 3 months. Regardless of awareness, HIV-positive participants reported more violence and forced relocation experiences than HIV-negative participants.Conclusions. There is an urgent need to increase HIV detection among MSM and transgender women in Bogotá. HIV-positive–unaware group characteristics suggest an important role for structural, social, and individual interventions.Colombia ranks second among countries in Latin America in HIV prevalence, with estimates ranging from 0.7% to 1.1% of the adult population.1 Men who have sex with men (MSM) represent the group most strongly affected, with prevalence of 18% to 20% based on venue-based convenience samples2,3 and 15% based on respondent-driven sampling (RDS).4 Colombia has a long history of armed conflict, and the pervasive conditions of violence, internal displacement, and poverty can be relevant to HIV transmission.5 “Social cleansing” by armed groups has been aimed at MSM and transgender women, as well as people living with HIV,5 and the stigma associated with homosexuality and HIV is widespread and inherent in structural inequalities in Colombia.6,7 Social epidemiological models posit that HIV is influenced by such structural (e.g., civil unrest, migration) and social factors (e.g., social networks, community attitudes), as well as individual characteristics (e.g., psychological characteristics, behavior).8Public health efforts emphasize the importance of detecting and treating undiagnosed HIV as a means of reducing HIV incidence.9–11 In the United States, approximately 20% of HIV-positive individuals are thought to be unaware of their infection, but this group is estimated to be responsible for nearly half of new transmissions.12 There is limited research concerning awareness of serostatus in Latin America. Undiagnosed infection was found to be 89% among HIV-positive MSM sampled in Peru in 2011,13 and rates are likely to be high in Colombia because of low levels of testing,6 including among MSM.4,14 Recent studies of MSM in France, Peru, and the United States have found associations between undiagnosed infection and demographic characteristics such as age, income, and education13,15,16; risk behaviors14,17,18; family or intimate partner violence19; and health insurance coverage.20 We also examined awareness in relation to violence and forced relocation, conditions specific to the Colombian context.Respondent-driven sampling was developed as a means of obtaining unbiased estimates from hidden populations,21–23 and it has been shown to capture a more diverse24,25 and hidden26 group of MSM than time–location or snowball sampling. Research has suggested, however, that biases can occur.27–29Our current study and a study conducted by the United Nations Population Fund and the Colombian Ministry of Health and Social Protection (UNFPA/MSPS) were independently funded at approximately the same time to address the limited information about behavioral risk and HIV prevalence among Colombian MSM. Comparison of findings from the 2 studies provides evidence concerning reliability of the RDS-derived prevalence estimates. We estimated HIV prevalence among MSM and transgender women in Bogotá, Colombia, examined reliability of RDS-derived estimates in relation to the UNFPA/MSPS study,4 and investigated the role of the social and structural context of Colombia in both prevalence and awareness of positive serostatus.  相似文献   

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Young black men who have sex with men (YBMSM) are experiencing high and rising rates of HIV infection, more than any other age-risk group category in the USA. Contributors to HIV risk in this group remain incompletely elucidated. We conducted exploratory qualitative interviews with 20 HIV-positive YBMSM aged 17–24 and found that father–son relationships were perceived to be important sociocontextual influences in participants’ lives. Participants discussed the degree of their fathers’ involvement in their lives, emotional qualities of the father–son relationship, communication about sex, and masculine socialization. Participants also described pathways linking father–son relationships to HIV risk, which were mediated by psychological and situational risk scenarios. Our thematic analysis suggests that father–son relationships are important to the psychosocial development of YBMSM, with the potential to either exacerbate or attenuate sexual risk for HIV. Interventions designed to strengthen father–son relationships may provide a promising direction for future health promotion efforts in this population.  相似文献   

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Objectives. We examined primary and secondary syphilis cases among men who have sex with men (MSM) in California, and the association of methamphetamine use and Internet use to meet sex partners (Internet use) with number of sex partners.Methods. We analyzed California surveillance data for MSM who were diagnosed with syphilis between 2004 and 2008, to assess differences in the mean number of sex partners by methamphetamine use and mutually exclusive groups of patients reporting Internet use (Internet users).Results. Large proportions of patients reported methamphetamine use (19.2%) and Internet use (36.4%). From 2006 through 2008, Adam4Adam was the most frequently reported Web site statewide, despite temporal and regional differences in Web site usage. Methamphetamine users reported more sex partners (mean = 11.7) than nonmethamphetamine users (mean = 5.6; P < .001). Internet users reported more sex partners (mean = 9.8) than non-Internet users (mean = 5.0; P < .001). Multivariable analysis of variance confirmed an independent association of methamphetamine and Internet use with increased numbers of sex partners.Conclusions. Higher numbers of partners among MSM syphilis patients were associated with methamphetamine and Internet use. Collaboration between currently stand-alone interventions targeting methamphetamine users and Internet users may offer potential advances in sexually transmitted disease control efforts.After decades of substantial progress in syphilis control, the number of primary and secondary syphilis cases in California increased each year from 1999 through 2008.1 Prior to 2000, syphilis in California had been primarily among heterosexual populations2,3; however, recent increases have been among men who have sex with men (MSM).1 Similar increases in infectious syphilis cases among MSM have been seen in other metropolitan areas across the United States.4–9Increasing numbers of MSM have reported using the Internet to meet sex partners10–12 (hereafter referred to simply as “Internet use”); a meta-analysis by Liau et al. placed the figure at approximately 40%.13 Early studies examining the association between Internet use and sexual risk behavior found that MSM who reported seeking sex partners online were more likely to report both higher numbers of partners and more anonymous, unlocatable partners than MSM not seeking partners online.14,15 In San Francisco, an outbreak of syphilis among MSM was linked to seeking sex partners through an online chatroom.16 Several studies also found that individuals using the Internet to seek sex partners were at greater risk for sexually transmitted disease (STD) than individuals not seeking sex partners online.17–19 More recent research suggests that such Internet use is a general marker of individuals who already engage in or seek out high-risk sexual behavior; however, its independent contribution to increasing one’s risk of STD infection is unclear.20–23An association between methamphetamine use and risky sexual behavior for STD/HIV transmission among MSM has been well documented. A cross-sectional study in San Francisco found that methamphetamine use, particularly in combination with sildenafil (Viagra), was associated with an increased risk of early syphilis infection among MSM seen at an STD clinic.17 Methamphetamine users are more likely than nonmethamphetamine users to report multiple and anonymous sex partners, STD coinfections, and more frequent unprotected anal intercourse with HIV sero-discordant partners or partners with unknown HIV status.24–27Although methamphetamine use and Internet use have been associated with risky sexual behavior and risk of STD/HIV infection, few studies have examined the effect of these factors together.28,29 We describe the demographics and risk characteristics of MSM primary and secondary syphilis cases diagnosed in California between 2004 and 2008 and, in particular, the relationship of methamphetamine use and Internet use with reported number of sex partners within the year prior to syphilis diagnosis.  相似文献   

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Depression is a major public health problem in the Russian Federation and is particularly of concern for men who have sex with men (MSM). MSM living in Moscow City were recruited via respondent-driven sampling and participated in a cross-sectional survey from October 2010 to April 2013. Multiple logistic regression models compared the relationship between sexual identity, recent stigma, and probable depression, defined as a score of ≥23 on the Center for Epidemiological Studies Depression scale. We investigated the interactive effect of stigma and participation in the study after the passage of multiple “anti-gay propaganda laws” in Russian provinces, municipalities, and in neighboring Ukraine on depression among MSM. Among 1367 MSM, 36.7% (n?=?505) qualified as probably depressed. Fifty-five percent identified as homosexual (n?=?741) and 42.9% identified as bisexual (n?=?578). Bisexual identity had a protective association against probable depression (reference: homosexual identity AOR 0.71; 95%CI 0.52–0.97; p?<?0.01). Those who experienced recent stigma (last 12 months) were more likely to report probable depression (reference: no stigma; AOR 1.75; 95%CI 1.20–2.56; p?<?0.01). The interaction between stigma and the propaganda laws was significant. Among participants with stigma, probable depression increased 1.67-fold after the passage of the anti-gay laws AOR 1.67; 95%CI 1.04–2.68; p?<?0.01). Depressive symptoms are common among MSM in Russia and exacerbated by stigma and laws that deny homosexual identities. Repeal of Russia’s federal anti-gay propaganda law is urgent but other social interventions may address depression and stigma in the current context.  相似文献   

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Sexually transmitted infections (STIs) remain a significant public health problem worldwide. We aimed to describe the temporal trends and relative contributions of established risk factors to STIs among sexual health center attendees. This retrospective study included more than 90,000 individuals who attended a sexual health center in Sydney, Australia, during the period 1998–2013. Multivariable logistic regression models were used to identify the correlates of STI diagnoses for three groups: men who have sex with men (MSM), heterosexual men, and women separately. Trends in population attributable risk percentages (PAR%) were estimated to assess the relative contributions of the risk factors on STI diagnosis. STI diagnosis rates among sexual health clinic attendees increased by 75% from 16 to 28% among MSM and more than doubled among heterosexual men and women (7–15 and 5–12%, respectively). Inconsistent condom use, three or more sex partners, sex overseas, past STI diagnosis, and contact with an STI case collectively contributed 61, 74 and 55% of the STI diagnoses among MSM, heterosexual men and women, respectively. Increase in STI diagnosis associated with temporal trends in combined risk factors including condomless sex, multiple sex partners, past STI diagnosis, and contact with an STI case. Although the majority of the factors considered in this study have been significantly associated with STI positivity in all three groups, their overall population level contributions to the epidemic have changed substantially. Our results indicated significant disparities between the MSM and heterosexual men and women as well as sex-specific differences in terms of sexual behaviors.  相似文献   

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Several recent studies have sought to elaborate upon the applicability and validity of respondent-driven sampling (RDS) to find hard-to-reach samples in general and men who have sex with men (MSM) in particular. Few published studies have elucidated the characteristics associated with initial RDS participants (“seeds”) who successfully recruited others into a study. A total of 74 original seeds were analyzed from four Massachusetts studies conducted between 2006 and 2008 that used RDS to reach high-risk MSM. Seeds were considered “generative” if they recruited two or more subsequent participants and “non-generative” if they recruited zero or one participant. Overall, 34% of seeds were generative. In separate multivariable logistic regression models controlling for age, race, health insurance, HIV status, and the study for which the seed was enrolled, unprotected anal sex in the past 12 months [adjusted odds ratio (AOR) = 6.68; 95% confidence interval (95% CI) = 1.27–35.12; p = 0.03], cocaine use during sex at least monthly during the past 12 months (AOR = 8.81; 95% CI = 1.68–46.27; p = 0.01), and meeting sex partners at social gatherings (AOR = 7.42; 95% CI = 1.58–34.76; p = 0.01) and public cruising areas (AOR = 4.92; 95% CI = 1.27–19.01; p = 0.02) were each significantly associated with increased odds of being a generative seed. These findings have methodological and practical implications for the recruitment of MSM via RDS. Finding ways to identify RDS seeds that are consistently generative may facilitate collecting a sample that is closer to reflecting the MSM who live in all of the communities in a given location or study sample.  相似文献   

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We assessed socio-structural and behavioral correlates of preexposure prophylaxis (PrEP) for HIV infection among a sample of high-risk HIV-negative men who have sex with men (MSM) in Los Angeles, California. Participants from an ongoing 5-year prospective cohort study investigating the direct impacts of substance use on HIV transmission dynamics were enrolled between February 2015 and January 2017. All men completed a computer-assisted self-interview every 6 months that assessed recent (past 6 months) PrEP use and socio-structural and behavioral factors. Of the total 185 MSM (mean age = 29 years) included in the study, majority were African American (40%) or Hispanic (41%) and reported current health insurance coverage (80%). In multivariable analysis using log-binomial regression, having health insurance coverage [adjusted prevalence ratio (aPR) 2.02; 95% confidence interval (CI) 1.01 to 4.01, p = 0.04] was associated with recent PrEP use. Unstable housing (aPR = 0.44, 95% CI 0.22 to 0.90, p = 0.02) was associated with lower PrEP use. Behavioral factors associated with recent PrEP use include sex with a HIV-positive partner (aPR = 3.63, 95% CI 1.45 to 9.10, p = 0.01), having six or more sex partners (aPR = 2.20, 95% CI 1.26 to 3.82, p = <0.01), and popper use (aPR = 2.76, 95% CI 1.58 to 4.84, p = <0.01). In this sample of predominantly racial/ethnic minority MSM, socio-structural and behavioral factors were important factors associated with recent PrEP use. These findings provide considerations for intervention development to promote PrEP use among key groups of MSM.  相似文献   

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