Global epidemiology of HIV among female sex workers: influence of structural determinants

Sexually transmitted infections and sexual practices with non-work partners, among female sex workers attending a sexual health clinic in Melbourne, 2011-2020

BACKGROUND

Few studies have examined the sexual practices of female sex workers (FSWs) outside of their sex work and their association with the detection of bacterial sexually transmitted infections (STIs). This study aimed to investigate the annual trends in the number of non-work sexual partners and condom use among FSWs and their association with STIs.

METHODS

We conducted a repeated cross-sectional study of FSWs attending a sexual health clinic in Melbourne for the first time between January 2011 and December 2020. Data on sexual practices with non-work male and female sexual partners, condom use and STI diagnoses among FSWs were extracted.

RESULTS

Of the 3075 FSWs included in the analysis, 70% (n=2167) reported having non-work sexual partners in the past 12 months, 66% (n=2041) reported having non-work male sexual partners, 20% (n=608) reported having non-work female sexual partners and 18% (n=556) reported having both non-work male and female sexual partners. From 2011 to 2020, the proportion of FSWs who had non-work casual male sexual partners increased from 37% (115/315) to 61% (69/113) (ptrend<0.001). Condomless sex with non-work casual male sexual partners increased from 43% (50/115) to 67% (46/69) (ptrend<0.001). The positivity of any STIs increased from 5% (16/312) to 13% (14/110) (ptrend<0.001). Multivariable analyses showed that FSWs who had condomless sex with non-work casual male sexual partners had higher odds of having any STIs (adjusted OR 1.41; 95% CI: 1.01, 1.95) compared with those who consistently used condoms with these sexual partners.

CONCLUSION

Our study highlights a shift in the sexual practices of FSWs outside of sex work, in line with the trends observed in the general population. These changes may contribute to changes in STI transmission dynamics in this population. Overall, we found that the STI positivity in FSWs is low.

Bridging the gap: Enhancing HIV care pathways for young key populations in Chad

Young key populations-sex workers and men who have sex with men (MSM)-face significant barriers to accessing HIV care in Chad due to stigma, discrimination, and socio-economic challenges. Although legal protections exist, gaps in enforcement continue to undermine care efforts. This study explored care pathways for young key populations in Chad to identify their specific challenges and propose targeted strategies to strengthen the HIV care continuum. Conducted in April 2025 in N'Djamena Chad, the qualitative study involved ten in-depth interviews with sex workers and MSM, aged 15-24 years, recruited through snowball sampling. Framework analysis revealed key themes across the HIV care continuum, specifically in testing, linkage to care, and retention in antiretroviral therapy (ART). Three major themes and 13 sub-themes emerged: (1) HIV testing and diagnosis, (2) linkage to care and ART initiation, and (3) retention in care and adherence to ART. Stigma-both externalized and internalized-was a significant barrier at every stage. Fear of disclosure, discrimination in healthcare settings, and financial constraints further hindered care engagement. Conversely, community-based awareness programs in faith-based institutions, and peer support networks were crucial in facilitating access to services. Addressing these challenges requires a comprehensive, multi-level approach that includes stigma-reduction training for healthcare workers, enforcement of anti-discrimination laws, targeted financial aid mechanisms, and integrated psychosocial counseling. Strengthening community-based interventions and peer-led outreach can further enhance engagement and retention, thereby improving health outcomes and reducing new infections among young key populations in Chad while aligning with global HIV targets.

Trends and factors associated with HIV viral load non-suppression among treatment-experienced female sex workers in Kenya

BACKGROUND

Transactional sexual relations in the absence of condom use is a well established behaviour that strongly contributes to HIV transmission if the infected person is not virally suppressed. In this study, we determined the trends and factors associated with viral load non-suppression (VLNS) among treatment-experienced FSWs in Kenya.

METHODS

This retrospective cohort study used data collected from seven sex workers' outreach clinics between 2015 and 2022. VLNS trends were determined using the Modified Mann-Kendall test, and the effects of covariates on VLNS odds were examined using generalized estimating equations (GEE) with a logit link.

RESULTS

Twelve thousand one hundred and seventeen viral load tests were performed on samples collected from 1947 FSWs. The prevalence of VLNS decreased from 25.5% [95% confidence interval (CI) 17.6-34.6] in 2016 to 4.3% (95% CI 2.5-6.7) in 2021. The odds of VLNS decreased by 9% per year during the study period in the multivariable GEE analysis adjusted for covariates [regimen, age, and sex worker outreach program (SWOP) clinic], [odds ratio (OR) 0.91, 95% CI 0.84-0.98; P  = 0.005]. Age was a significant factor associated with VLNS, with younger women (18-24 years) having 2.2 times higher odds of VLNS (OR 2.15 95% CI 1.10-4.20; P  = 0.025) than those aged over 55 years (reference). Participants on dolutegravir (DTG)-based cART regimen had 64% lower odds of VLNS (OR 0.36, 95% CI 0.25-0.52; P  < 0.001) compared to those on protease inhibitor-based regimen.

CONCLUSION

There is strong evidence of decreasing population-level viraemia among FSWs during the study period. To maintain the trend, it is necessary to continue supporting SWOP clinics in order to provide HIV treatment services to this key population.

HIV seroprevalence, incidence, and viral suppression among Ugandan males with bar or sex worker partners: a population-based study

Background

Female bar or sex workers (FBSWs) in Eastern Africa experience a high burden of HIV. However, there is limited population-level data on HIV seroprevalence, incidence, and viral suppression among their male partners.

Methods

Men who had sex with FBSWs in the past year were identified through longitudinal population-based HIV surveillance in southern Uganda between 2013 and 2020. Surveillance was conducted over four surveys in four Lake Victoria fishing communities (HIV seroprevalence~40%) and 37 inland agricultural and trading communities (~12%). Primary outcomes included laboratory-confirmed HIV seropositivity, incident infection, and viral suppression (<200 copies/mL). Prevalence and incidence rate ratios (PR, IRR) were estimated using univariable and multivariable Poisson regressions with 95% confidence intervals (95%CIs).

Findings

17,438 male participants contributed 35,273 visits, with 2,420 (13.9%) reporting FBSW partners at ≥1 study visit. Men with FBSW partners tended to be older, have less education and lower incomes, and be previously married compared to those without. HIV seroprevalence was significantly higher among men with FBSW partners (vs. without FBSW partners) in both inland (21.0%vs.7.5%; PR=2.79,95%CI=2.41-3.23) and fishing communities (38.6%vs.23.0%; PR=1.67,95%CI=1.53-1.84). Overall, 154 HIV incident events occurred over 27,396 years of participant follow-up. HIV incidence was also higher among men with FBSW partners than those without (1.93vs.0.44/100 person-years; IRR=4.37,95%CI=3.04-6.16). Among men with HIV, viral suppression was similar among those with and without FBSW partners. However, the population prevalence of HIV viremia was 1.6 times higher (95%CI=1.41-1.84) among men with FBSW partners due to a higher background seroprevalence of HIV.

Interpretation

Men in Uganda frequently report sex with FBSWs, which is associated with a significantly higher risk of HIV acquisition. Tailored HIV prevention strategies, including the promotion and uptake of PrEP, are essential to reduce the HIV burden in this population.

Funding

National Institute of Allergy and Infectious Diseases, National Institutes of Health.

Intersectional associations between citizenship, English fluency and racialisation on access to health and sex work community services: findings from a prospective cohort of sex workers in Canada (2014-2022)

OBJECTIVES

To examine the intersectional associations between migration experiences and use of health and sex work community-based services among women sex workers.

DESIGN

Data were drawn from An Evaluation of Sex Workers Health Access, a community-based cohort of sex workers from September 2014 to February 2022. Bivariate and multivariable regression with generalised estimating equations (GEEs) using interaction terms was used to separately model associations between intersectional aspects of the migration experience (citizenship, English fluency and Asian identity) and service access outcomes.

SETTING

Diverse community-based sex work venues in Metro Vancouver, Canada.

PARTICIPANTS

652 cis and trans women sex workers, with 149 (22.8%) being immigrants/migrants born outside of Canada (n=149).

PRIMARY OUTCOME MEASURES

(1) Accessing health services when needed and (2) utilisation of sex work community-based services.

RESULTS

In separate adjusted multivariable GEE models, we found significantly reduced odds of accessing health services when needed for women without Canadian citizenship and with limited English fluency, as well as those lacking Canadian citizenship but speaking fluently. Significantly reduced odds of accessing health services were also found among sex workers without Canadian citizenship and who identified as Asian. Regarding using sex work community-based services, women sex workers lacking Canadian citizenship and with limited English fluency, and those who were Asian and lacked Canadian citizenship, had low odds of using sex work community-based services.

CONCLUSIONS

Findings show a gradient in the relationship between intersectional experiences of lack of citizenship, limited English fluency and Asian identity on sex workers' access to health services and sex work community-based services. Culturally responsive and language-tailored services that attend to and address these intersecting forms of structural marginalisation, along with the full decriminalisation of all aspects of sex work, and the removal of punitive sex work-related immigration policies, are recommended.

Cost-effectiveness of HIV pre-exposure prophylaxis among female sex workers in Iran

The Iranian government does not fund pre-exposure prophylaxis (PrEP), and it is not used in Iran due to uncertainties in its cost-effectiveness. In this study, we examined the cost-effectiveness of PrEP among female sex workers (FSWs) in Iran. The cost-effectiveness analysis compared only PrEP, a combination of PrEP with harm reduction (HR) with only HR scenario among FSWs over a 10-year time horizon. The perspective of the healthcare provider was used in the analysis. The primary outcome was disability-adjusted life year (DALY) averted. Analyses included health and cost outcomes, as well as the incremental cost-effectiveness ratio (ICER), which was reported as the cost per DALY averted. Only PrEP was not cost-effective at a willingness to pay threshold of 4669.6 USD per DALY averted in Iran. In contrast, PrEP and HR strategies were cost-effective at the same willingness to pay threshold. The ICER was 868.47 USD per DALY averted for PrEP and HR compared to HR alone. Compared to HR, combining PrEP with HR is a cost-effective intervention among Iranian FSWs for reducing the clinical and economic burden associated with HIV over a 10-year time horizon. Iran should add PrEP to current HR programs for FSWs.

Intimate partner sexual violence is associated with unhealthy alcohol use among Kenyan women engaged in sex work

Aim

Unhealthy alcohol use is often correlated with experiences of intimate partner violence (IPV). We investigated how different types of IPV (sexual, physical, emotional, and financial) were associated with unhealthy alcohol use among women engaged in sex work in Mombasa, Kenya.

Methods

This cross-sectional study included 283 HIV-negative women who engaged in sex work recruited from an ongoing cohort study. Modified Poisson analysis was used to assess associations between recent (≤ 12 months) or past (> 12 months) experiences of sexual, physical, emotional, or financial IPV and unhealthy alcohol use defined as an Alcohol Use Disorders Identification Test score ≥ 8.

Results

Among 283 participants, 34.6 % had unhealthy alcohol use. Physical (62.5 %), emotional (60.4 %), and financial (66.4 %) IPV occurred more frequently than sexual IPV (43.8 %). Adjusted risk ratios (ARR) for relationships between physical and financial IPV and unhealthy alcohol use were elevated but not statistically significant. Compared to participants who had not experienced sexual IPV, those who had experienced recent or past sexual IPV had an increased risk of unhealthy alcohol use (ARR 1.56, 95 % confidence interval [1.09, 2.23] and ARR 1.48, 95 % confidence interval [0.97, 2.25], respectively).

Conclusion

Sexual IPV was associated with unhealthy alcohol use among Kenyan women who engage in sex work. Physical, emotional, and financial IPV were also highly prevalent in the study population, though not associated with unhealthy alcohol use. These findings affirm the potential benefit of providing integrated IPV and alcohol treatment services focused on recovery after experiences of IPV for this vulnerable population.

Mechanistic modeling of social conditions in disease-prediction simulations via copulas and probabilistic graphical models: HIV case study

As social and economic conditions are key determinants of HIV, the United States 'National HIV/AIDS Strategy (NHAS)', in addition to care and treatment, aims to address mental health, unemployment, food insecurity, and housing instability, as part of its strategic plan for the 'Ending the HIV Epidemic' initiative. Although mechanistic models of HIV play a key role in evaluating intervention strategies, social conditions are typically not part of the modeling framework. Challenges include the unavailability of coherent statistical data for social conditions and behaviors. We developed a method, combining undirected graphical modeling with copula methods, to integrate disparate data sources, to estimate joint probability distributions for social conditions and behaviors. We incorporated these in a national-level network model, Progression and Transmission of HIV (PATH 4.0), to simulate behaviors as functions of social conditions and HIV transmissions as a function of behaviors. As a demonstration for the potential applications of such a model, we conducted two hypothetical what-if intervention analyses to estimate the impact of an ideal 100% efficacious intervention strategy. The first analysis modeled care behavior (using viral suppression as proxy) as a function of depression, neighborhood, housing, poverty, education, insurance, and employment status. The second modeled sexual behaviors (number of partners and condom-use) as functions of employment, housing, poverty, and education status, among persons who exchange sex. HIV transmissions and disease progression were then simulated as functions of behaviors to estimate incidence reductions. Social determinants are key drivers of many infectious and non-infectious diseases. Our work enables the development of decision support tools to holistically evaluate the syndemics of health and social inequity.

Jitegemee (rely on yourself): a cross-sectional study on acceptability, feasibility and design considerations for a personal savings intervention to reduce HIV risk among female sex workers in Siaya County, Kenya

OBJECTIVES

The primary objective was to assess the acceptability of a savings intervention in which female sex workers (FSW) would save part of their earnings and call back (withdraw) when faced with a financial need that could force them into HIV risk practices. The secondary objectives were to assess its feasibility, concerns and design considerations.

DESIGN

A cross-sectional survey. Participants were asked for views on the intervention, their earnings, saving and spending practices, and suggestions for the intervention package.

SETTING

Kisumu and Siaya counties, Kenya.

PARTICIPANTS

FSWs aged ≥18 years, self-identifying as sex workers and living in Kisumu or Siaya county.

OUTCOME MEASURES

The primary outcome was the proportion of participants who believed the Jitegemee intervention would be acceptable to FSWs in Kenya. The secondary outcomes were the proportion who: could generate money to save (assessed from income, spending and loaning practices), reported potential challenges with the intervention and suggested components to inform the intervention package.

RESULTS

We enrolled 369 FSWs, 88% aged 18-39 years, 78% unmarried, 94% cared for ≥1 child(ren) and 78% were household heads. Over half (52.1%) had been in sex trade for ≤4 years, with 62.3% reporting <10 clients the previous month. Jitegemee was highly acceptable, at 94.8%; however, participants suggested adding: financial literacy, including saving, spending and loans management (74.8%), forming saving groups (37.5%) and goal-setting (24.1%). Those who did not care for children were 4.86 times more likely to save (adjusted OR (aOR)=4.86, p=0.18), non-household heads were less likely to save (aOR=0.57, p=0.28) and those in the sex trade for 1-4 years and 5-9 years were four to five times more likely to save than those <1 year (aOR=4.49, p=0.01 and aOR=5.22, p=0.01, respectively).

CONCLUSIONS

Jitegemee intervention was highly acceptable; however, several recommendations were suggested to make the design more appealing and potentially effective.

Scaling up access to antiretroviral treatment for HIV: lessons from a key populations program in Nigeria

Over the years, Nigeria has recorded significant progress in controlling the HIV epidemic in the country. HIV prevalence has reduced from 4.1% in 2010 to 1.4 in 2019. The number of people acquiring new HIV infections decreased from 120,000 in 2010 to 74,000 in 2021, and HIV-related deaths decreased from 82,000 in 2010 to 51,000 in 2021. However, the country still faces challenges such as high HIV transmission among key populations (KP) who account for 11% of new HIV infections. Over the years, the government and development partners involved in HIV response efforts in Nigeria have been establishing and scaling up access to services to help address the needs of KPs. Initially, services for KPs as with the general population in Nigeria were largely preventive. Treatment of PLHIV in Nigeria commenced in 2002 and has increased from about 15,000 to more than 1.78 million PLHIVs in 2023. Despite this progress in treatment coverage, however, KPs are not equitably covered. To address this gap, the U.S. President's Emergency Plan for AIDS Relief (PEPFAR) launched an ambitious initiative-the Key Population Investment Fund (KPIF)-to target the unaddressed HIV-related needs of key populations (KPs) who are disproportionately affected by HIV. The KPIF initiative was implemented through partner organizations such as the Society for Family Health (SFH), a KP-friendly and indigenous non-governmental organization. Earlier, the program implemented by SFH was largely an HIV prevention program. SFH's transformation, transition, and growth to a comprehensive HIV prevention, care, and treatment service provider was necessary to bridge the gap in the needed expansion of HIV services to adequately meet the care needs of KPs and scale up programs. Therefore, this paper's aim is to share experiences in the transformation of SFH into a comprehensive HIV prevention, treatment, and care service provider in the hope that it may serve as a lesson for organizations with similar objectives.

Social-structural barriers to primary care among sex workers: findings from a community-based cohort in Vancouver, Canada (2014-2021)

BACKGROUND

Due to social-structural marginalization, sex workers experience health inequities including a high prevalence of sexually transmitted and blood-borne infections, mental health disorders, trauma, and substance use, alongside a multitude of barriers to HIV and substance use services. Given limited evidence on sex workers' broader primary healthcare access, we aimed to examine social-structural factors associated with primary care use among sex workers over 7 years.

METHODS

Data were derived from An Evaluation of Sex Workers Health Access (AESHA), a community-based open prospective cohort of women (cis and trans) sex workers in Metro Vancouver, from 2014 to 2021. Descriptive statistics were used to summarize the proportion of primary care use in the past six months and to assess primary care trends over time from 2014-2021. We used multivariate logistic regression with generalized estimating equations (GEE) to identify social-structural factors associated with primary care access (seeing a family doctor in the last six months), after adjusting for confounders.

RESULTS

Amongst the 646 participants, most (87.4%) accessed primary care at some point during the study period, and primary care use in the last 6 months was relatively stable (ranging from 60-78%) across each follow-up period. At first available observation, participants faced a high burden of sexually transmitted and blood-borne infections (STBBIs) (48.0%, 11.5%, and 10.4% were HCV, HIV, or STI seropositive, respectively), 56.8% were diagnosed with a mental health disorder, 8.1% had recently overdosed, and 14.7% were recently hospitalized. In multivariable GEE analysis, exposure to intimate partner violence was associated with reduced primary care use (Adjusted odds ratios (AOR) 0.63, 95% Confidence interval (CI): 0.49-0.82), and limited English fluency was marginally associated (AOR 0.76 CI: 0.51-1.14).

CONCLUSIONS

This study characterized primary care use and its social-structural determinants among sex workers over 7 years. Participants faced a high burden of STBBIs and other health disparities, and a proportion faced gaps in primary care utilization. Scale-up of trauma-informed, culturally and linguistically tailored, sex worker-friendly primary care models are needed, alongside structural interventions to decriminalize and destigmatize sex work and substance use.

An Open Letter on Advancing HIV prevention: Augmenting an ecosystem-based approach to understand prevention decision-making

In the last two decades, HIV programs have been able to avert millions of AIDS-related deaths and reduce HIV incidence. However, the 1.3 million new HIV infections in 2022 remain significantly above the UNAIDS target of fewer than 370,000 new infections by 2025. HIV programs worldwide also did not achieve the UN's 90-90-90 target for testing and treatment set for 2020. Within this broader picture, HIV continues to disproportionately affect key and at-risk populations, including gay men and other men who have sex with men, female sex workers, and adolescent girls and young women. As HIV incidence declines and biomedical advances continue, it will become critical for public-health practitioners to reach key and at-risk populations with prevention services and limit primary transmission. In this Open Letter, we focus on factors that influence uptake of HIV prevention products and thereby demand for HIV prevention products and services. These factors exist at three levels of the decision-making ecosystem - the individual level, interaction level and systemic level. We argue that approaching HIV prevention solely through the lens of these levels creates a static view of prevention decision-making. There is a need instead for a dynamic viewpoint that can mirror the changing contexts in which users find themselves and make prevention decisions. We demonstrate that the current ecosystem viewpoint is useful to understand the gaps that exist in program implementation, but does not provide adequate insights into the underlying behaviors that contribute to these gaps. To address this, we suggest an approach to include dynamic aspects of decision-making with factors that influence the individual's assessment of risk, their evaluation of the opportunities to use HIV prevention, and their effective use of prevention products.

Sexual Violence, Genital Cytokines, and Colposcopy Findings: A Cross-Sectional Study of Women Engaged in Sex Work in Mombasa, Kenya

BACKGROUND

Sexual violence (SV) increases human immunodeficiency virus (HIV) susceptibility in a sustained manner. This study evaluated genital cytokines and colposcopy findings in women reporting both recent and more remote SV.

METHODS

A cross-sectional study of HIV-1 negative Kenyan women who engage in sex work was performed. Cervicovaginal fluid was collected by menstrual cup and cytokines (IFNγ, TNFα, IL-1β, IL-6, IL-10, MIP-1α, MIP-1β, and CXCL10) measured using chemiluminescence. Cervical injury was assessed by colposcopy. Associations between recent (≤30 days prior), more remote (>30 days prior), and no (reference category) SV exposure and cytokine concentrations were evaluated using linear regression.

RESULTS

Among 282 participants, 25 (8.9%) reported recent SV and 123 (43.6%) reported more remote SV. Only two cytokines (IL-10 and CXCL10) were associated with the 3-category SV variable in bivariable modeling at the prespecified cutoff ( P < 0.2) and carried forward. In multivariable analyses, more remote SV (β = 0.72; 95% confidence interval [CI], 0.06-1.38; P = 0.03), but not recent SV (β = 0.20; 95% CI, -0.99 to 1.39; P = 0.74) was associated with cervicovaginal IL-10 compared with no SV. Recent (β = 0.36; 95% CI, -0.94 to 1.67; P = 0.58) and more remote (β = 0.51; 95% CI, -0.21 to 1.24; P = 0.16) SV were not associated with CXCL10 compared with no SV. Cervical epithelial friability (χ 2 = 1.3, P = 0.51), erythema (χ 2 = 2.9, P = 0.24), vascular disruption (χ 2 = 1.4; P = 0.50), epithelial disruption (χ 2 = 2.6, P = 0.27), or any colposcopy finding (χ 2 = 1.2, P = 0.54) were not associated with SV category by χ 2 test.

CONCLUSIONS

The mechanism linking SV to sustained increases in HIV susceptibility may not be related to persistent genital inflammation or injury.

Navigating healthcare barriers: a cross-sectional study using respondent-driven sampling to assess migrant women sex workers' access to primary care in France

Introduction

Migrant women sex workers (MWSWs) are affected by higher morbidity rates, reflecting the complex health risks associated with sex work and migration which they face. This study aimed to assess MWSWs' use of primary care services in France, as well as the factors associated with having a family doctor.

Methods

This cross-sectional observational study of 135 cisgender and transgender MWSWs is part of the larger Favoriser l'Accès à la Santé Sexuelle des Travailleuses du Sexe project, which aims to improve global knowledge of and access to sexual healthcare among this population. MWSWs aged 18 years and older were enrolled over 1 year between 2022 and 2023. The primary outcome was the percentage of MWSWs who reported having a family doctor. A best model analysis and a regression model were used to examine associations between having a family doctor and MWSWs' health and social characteristics.

Results

Only 33% of participants reported having a family doctor. Among these, 24% had disclosed they were sex workers to the latter. In general, MWSWs had poor access to preventive healthcare (33% had been HIV tested in the previous year, 33% had used contraception and 19% reported lifetime cervical cancer screening). In contrast, most participants (63.5%) perceived they were in good health. In the multivariate analysis, having a family doctor was not significantly associated with better health outcomes or with the quality of healthcare.

Conclusions

The majority of MWSWs did not have a family doctor; this fact compounds existing health vulnerabilities faced by this marginalised population. Improved targeted interventions are needed to increase healthcare access and quality for MWSWs. These interventions should include strategies to enhance communication with healthcare providers about this population's specific needs.

The protective association of social cohesion on sex workers' experiences of violence and access to community support: Impacts of resource sharing, trust and connection among a community-based cohort in Metro Vancouver, Canada (2010-2022)

OBJECTIVES

To measure recent social cohesion (resource sharing, trust and support) and its association with (1) sexual/physical violence, and (2) engagement with sex work-specific services among women sex workers in Metro Vancouver, Canada.

METHODS

Prospective data (January 2010-August 2022) were drawn from an open cohort of 900+ women sex workers. We developed multivariable logistic regression confounder models with generalized estimating equations (GEE) to examine associations between social cohesion and recent (1) physical/sexual violence and (2) engagement with sex work-specific services.

RESULTS

Of 918 participants, 36.8% were Indigenous and 32.1% were Black/Women of Colour. At baseline, the median social cohesion score was 19 (IQR 16-22), out of 36, with higher levels among participants who work with other sex workers. In separate multivariable confounder models with GEE, social cohesion was associated with lower odds of recent physical/sexual violence (Adjusted Odds Ratio 0.98 per point on scale, 95% Confidence Interval 0.97, 0.99) and recent use of sex work-specific services, although only statistically significant for physical/sexual violence.

CONCLUSIONS

Findings support the need to eliminate policing of work environments that promote sex workers' social cohesion and physical safety through full decriminalization.

Prevalence and associated factors of HIV among female sex workers in Eastern and Southern Africa: Systematic review and meta-analysis

BACKGROUND

Female sex workers (FSWs) are marginalized groups of the population who have limited access to healthcare and a higher risk of HIV infection due to biobehavioral and structural risk factors. Although it is known that the Eastern and Southern African region is affected by the highest HIV incidence and prevalence, understanding the burden among FSWs in the region remains limited. We aimed to assess the pooled prevalence and associated factors of HIV in this vulnerable population.

METHODS

Relevant studies were searched on PubMed, Embase, Scopus, ScienceDirect, Hinari, African Journals Online (AJOL), Google, and Google Scholar. The searching mechanism was constructed using keywords identified by CoCoPop (Condition, Context, and Population) framework and medical subject heading terms to recruit studies published between January 1, 2015 and March 30, 2024. Observational studies that estimate the prevalence or incidence or associated factors of HIV among FSWs, even if FSWs were not the main focus of the study, were included. The quality of included studies was assessed using Joana Brigg's Institute checklist. Data were extracted and analyzed using STATA 17 software. To estimate the pooled effect sizes with their 95% confidence intervals, a random effect model was fitted. The I2 statistic was used to evaluate heterogeneity. Funnel plot and Egger's regression test were utilized to assess the small study effect. Publication bias was managed using trim-and-fill analysis. Subgroup and sensitivity analysis were considered to handle heterogeneity among studies.

RESULTS

A total of 54 articles with 78,747 FSWs who had successful HIV biological test were included in the analysis. The pooled prevalence of HIV among FSWs in Eastern and Southern Africa was 36.0% (95% CI: 31.0%-41.0%). Regionally, the pooled prevalence was 59.0% (95% CI: 53.0%-64.0%) and 29.0% (95% CI: 25.0%-34.0%) in Southern and Eastern Africa, respectively. Age above 35 (POR = 7.35; 95% CI: 5.26, 10.28) and 25-34 years (POR = 2.91; 95% CI: 2.02, 4.21), being married (POR = 1.33; 95% CI: 1.07, 1.66), divorced (POR = 1.72; 95% CI: 1.39, 2.13), and widowed (POR = 2.70; 95% CI: 2.09, 3.49), primary education (POR = 1.29; 95% CI:1.08, 1.55), history of sexually transmitted infection (POR = 1.51; 95% CI: 1.20, 1.90), syphilis (POR = 2.57; 95% CI: 1.66, 3.98), Hepatitis B infection (POR = 2.60; 95% CI: 1.07,6.32), drinking alcohol (POR = 1.21; 95% CI: 1.01, 1.45) and injectable drug use before sex (POR = 1.75; 95% CI: 1.24, 2.47) were found significantly associated with the increased risk of HIV infection among FSWs.

CONCLUSION

These data suggest an urgent need to improve access to HIV prevention programs for FSWs. Providing behavioral interventions including reduction of alcohol and injectable drug use before sex, initiating tailored healthcare services, strengthening the psychosocial and legal support network, and fostering partnership might reduce the burden in the region. Clinicians could facilitate early detection and treatment of STIs, and Hepatitis B virus infection.

TRIAL REGISTRATION

Protocol registration: The protocol for this systematic review and meta-analysis was registered in the PROSPERO with registration number CRD42024509200.

Typologies of Sex Work Practice and Associations with the HIV Risk Environment and Risk Behaviors in Kazakhstan

Women engaged in sex work (WESW) who use drugs are a key population in Kazakhstan's HIV epidemic. Global research suggests susceptibility to HIV varies by sex work environment. This study aims to identify evidence-based typologies of WESW and examine their associations with HIV risk. We surveyed 400 WESW who use drugs in two Kazakhstani cities, including questions on sociodemographic characteristics, social, physical, and economic risk environments, and sexual risk behaviors. Latent class analysis identified four distinct typologies of sex work practice: occasional sex work (n = 61, 15%), professional sex work for money (n = 187, 47%), sex work in exchange for drugs, goods, or other services (n = 117, 29%), and managed sex work under a boss/pimp/madam (n = 35, 9%). We then used logistic regression to examine associations between typologies and risk behaviors. Compared to professional sex work, occasional sex work was associated with lower odds of multiple sexual partners (aOR:0.46[95%CI:0.24,0.90]), of multiple paid clients (aOR:0.25[0.13,0.49]), and of > 1 instance of unprotected sex with a paying partner (aOR:0.33[0.17,0.63]). Compared to professional sex work, sex work for nonmonetary items was associated with higher odds of multiple sexual partners (aOR:1.85[0.96,3.67]) and of > 1 instance of unprotected sex with a paying partner (aOR:1.71[1.01,2.93]). Results suggest heterogeneity among WESW who use drugs in Kazakhstan, and that typologies of sex work are associated with varying HIV risk environment factors and risk behaviors. Effective HIV prevention efforts must be tailored to address these varying risk environments and the resulting variety of needs.

Stigma, Discrimination and Other Social-Structural Factors Associated with Barriers to Counselling or Therapy among Women Living with HIV Who have Experienced Violence in Metro Vancouver, Canada

Women living with HIV face high social and structural inequities that place them at heightened risk for gender-based violence and mental health conditions, alongside health services access inequities, with almost no research done to better understand access to mental health services. This study therefore examined social and structural factors associated with barriers to counselling or therapy amongst women living with HIV who experienced lifetime physical and/or sexual violence in Metro Vancouver, Canada. Bivariate and multivariable logistic regression using generalized estimating equations (GEE) were used and adjusted odds ratios (AOR) and 95% Confidence Intervals ([95%CIs] are reported). From Sept/15-Aug/21, 1695 observations were collected among 279 participants. In multivariable analysis, with all variables measured in the last six months, experiencing any barriers to counselling or therapy was significantly associated with having thoughts or attempts of suicide (AOR:1.64 [1.02-2.66]), lacking coverage for health care (AOR:1.60 [1.17-2.18]), and everyday discrimination (AOR:1.02 [1.00-1.04]) and anticipated (AOR:1.57 [1.04-2.36]), enacted (AOR:1.48 [1.02-2.16]) or internalized (AOR:1.53 [1.07-2.20]) HIV stigma. Access to interdisciplinary mental health care services should be improved. Social and structural interventions to reduce HIV stigma and discrimination are urgently needed.

Contextual Factors Influencing Implementation of HIV Treatment Support Strategies for Female Sex Workers Living With HIV in South Africa: A Qualitative Analysis Using the Consolidated Framework for Implementation Research

BACKGROUND

Female sex workers (FSWs) face a confluence of multilevel barriers to HIV care. In South Africa, 63% of FSWs are living with HIV and <40% are virally suppressed. The objective of this analysis was to identify implementation determinants of 2 HIV treatment support strategies.

METHODS

The Siyaphambili trial tested a decentralized treatment provision and an individualized case management strategy aimed to support FSWs living with unsuppressed HIV viral loads. We identified a nested sample of trial participants using maximum variation sampling (n = 36) as well as a purposively selected sample of implementors (n = 12). We used semistructured interview guides, developed using the Consolidated Framework for Implementation Research (CFIR) and deductively coded the transcripts using CFIR, systematically assessing the strength and valence of implementation. We compared construct ratings to determine whether any constructs distinguished implementation across strategies.

RESULTS

Across 3 CFIR domains (innovation characteristics, inner setting, and outer setting), 12 constructs emerged as facilitating, hindering, or having mixed effects on strategy implementation. The relative advantage, design, adaptability, and complexity constructs of the innovation characteristics and the work infrastructure construct of the inner setting were strongly influential (±2 or +2). While the majority of construct valence and strength rating (9-12) were not distinguishing across strategies, we observed 3 weakly distinguishing CFIR constructs (relative advantage, complexity, and available resources).

CONCLUSIONS

Given the potential benefits of differentiated service delivery strategies, identifying the relative importance of implementation determinants facilitates transparency and evaluation, supporting future strategy design and implementation. Optimizing implementation will support addressing inequities in HIV care and treatment services.

Sexual violence affecting female sex workers in Côte d'Ivoire: prevalence, context, and associated mental health and substance use outcomes

BACKGROUND

Female sex workers are disproportionately affected by sexual violence, which is associated with an increased risk of poor mental health outcomes, substance use, and decreased access to health resources. Understanding the pathways through which sexual violence impacts these outcomes can inform strategies that appropriately and effectively meet the health needs of sex workers.

METHODS

This study investigated the prevalence of sexual violence among female sex workers in Côte d'Ivoire, and the relationship between sexual violence and adverse mental health and substance use outcomes. We examined survey data from female sex workers recruited between November 2019 and May 2020 across five regions of Côte d'Ivoire using respondent driven sampling (RDS), as part of an integrated bio-behavioral survey. The primary exposure of interest was self-reported lifetime experience of sexual violence, and the main outcomes of interest included depression, suicidal ideation, counselling seeking, alcohol consumption, and substance use. Multivariable logistic regression models investigated associations between exposure to sexual violence and the key mental health and substance use outcomes of interest. For each outcome, a directed acyclic graph was developed to identify a minimally sufficient set of covariates for adjustment. Additional sociodemographic characteristics, experiences, and sex work-related behaviors were explored in descriptive analyses using crude and RDS adjusted estimates.

RESULTS

Out of 1,177 participants, 376 (31.9%; RDS weighted: 30.5%; 95% CI: 24.7, 36.3) reported having experienced sexual violence in their lifetime, and of those 31.9% (RDS weighted: 31.2%; 95% CI: 21.3, 41.1) had experienced sexual violence within the previous 12 months. Experience of sexual violence was associated with an increased odds of suicidal ideation (aOR: 1.95; 95% CI: 1.48, 2.55), illicit drug use in the last 12 months (aOR: 2.40; 95% CI: 1.50, 3.86), daily alcohol use (aOR: 1.63; 95% CI: 0.99, 2.67), and having spoken to a counselor or confidant (aOR: 1.90; 95% CI: 1.34, 2.68).

CONCLUSION

Findings confirm a high burden of sexual violence among female sex workers in Côte d'Ivoire, and a need to implement large structural changes that enable female sex workers to seek protection as well as health resources after experiencing sexual violence. This may include reform in the form of targeted social, clinical and mental health resources, along with community development opportunities.

Exploratory analysis of the potential impact of violence on HIV among female sex workers in Mombasa, Kenya: a mathematical modelling study

BACKGROUND

Understanding the frequency of violence experienced by female sex workers (FSWs) and how violence contributes to HIV transmission can help improve HIV programs.

METHODS

Using recent recommendations for modelling structural factors and associated causal pathways, we developed a HIV transmission dynamic model for FSWs and their clients in Mombasa, Kenya, mechanistically representing three types of violence (sexual violence, SV; physical violence, PV; police assault and arrest, PAA). Each type of violence affects HIV transmission through key mediators (condom non-use, HIV testing). We parameterized the model using data from a cross-sectional study of FSWs aged 15-24 recruited from a systematic geographical mapping sampling frame in Mombasa, Kenya (Cheuk E et al., Frontiers in Reproductive Health 2(7), 2020). Using this model, calibrated (and cross-validated) to HIV epidemiological and violence outcomes, we estimated the incidence of violence episodes, the contribution of violence to the HIV epidemic measured by the transmission population-attributable fraction, and the potential impact of possible violence interventions.

RESULTS

The median estimated incidence of PAA in 2023 among FSWs who had not previously experienced that type of violence was 0.20 (95% credible interval: 0.17-0.22) per person-year (ppy), about double the incidence of SV and PV (0.10 (0.09-0.11), 0.11 (0.09-0.12), respectively). The incidence of violence was higher among FSWs who had previously experienced violence: the incidence of recurrent PV was 2.65 (1.82-3.37) ppy, while the incidence of recurrent SV and PAA were 1.26 (0.80-1.67) and 1.37 (0.94-1.74 ppy, respectively. In this setting, we estimated that a median of 35.3% (3.4-55.8%) infections in FSWs and clients combined over the next 10 years may be due to all types of violence (and mediators), mainly through reduced condom use in FSWs who have ever experienced SV (34.6% (2.4-55.5%)). Interventions that prevent future violence without mitigating the effects of past violence may only prevent 8.8% (0.8-14.0%) infections over 10 years.

CONCLUSIONS

FSWs in Mombasa experience violence frequently. In this population, we find that addressing sexual violence, including mitigating the effects of past violence, is potentially important in reducing HIV transmission in this population. However, the wide uncertainty range shows longitudinal studies are needed to strengthen the evidence of the influence of violence on HIV risk behavior. We find that the recommendations for modelling structural factors provide a useful framework for describing the model.

Patterns of inconsistent condom use and risky sexual behaviors among female sex workers in Mozambique

BACKGROUND

Female sex workers (FSWs) in Mozambique face significant health risks, including high HIV prevalence, combination of factors, including inconsistent condom use, engagement in risky sexual behaviors, and various socio-ecological determinants of health. Understanding the determinants of these practices is crucial for developing targeted interventions.

METHODS

This cross-sectional study analyzed data from the second round of Biobehavioral Survey (BBS) conducted from 2019 to 2020 in five urban areas to examine determinants of inconsistent condom use and risky sexual behaviors among FSWs. Modified Poisson regression models were used to assess the effect of various socio-demographic, economic, and behavioral factors on the outcomes, providing adjusted relative risk (aRR) with 95% confidence intervals (CI).

RESULTS

Among the 2,565 FSWs who reported inconsistent condom use, younger FSWs (15-24 years old, 29.1%), single (27.3%), with secondary or higher education (26.1%), nationals (25.9%), and residents of Tete City (30.5%) had a higher prevalence of inconsistent condom use. Initiating sex work < 18 years (31.0%), binge drinking (23.7%), and experiencing physical violence (29.0%) were significantly associated with this behavior. Among the 2,564 FSWs reporting risky sexual behaviors, a higher prevalence was observed in FSWs aged 15-24 (75.6%), those with secondary or higher education (75.8%), nationals (74.4%), and those residing in Quelimane (87.3%). Early sexual debut (< 15 years, 79.3%), initiating sex work before 18 years of age (77.7%), and illicit drug use (82.2%) were all associated with increased risky sexual practices. Inconsistent condom use among FSWs was significantly associated with residing in Tete (aRR = 2.4, 95% CI: 1.77-3.25), not being aware of female condom (aRR = 1.22, 95% CI: 1.03-1.45) and having experienced sexual a physical violence. Moreover, being married was significantly linked to risky sexual behavior among female sex workers (aRR = 1.27, 95% CI: 1.19-1.37), along with initiating sexual activity before age 15, having at least five years of sex work experience, engaging in binge drinking, and experiencing sexual and physical violence.

CONCLUSION

The study highlights the complex set of factors as age, education, geographic location, years of sex work services, early sexual debut, and illicit drug use that influence sexual risks behavior among FSWs in Mozambique. Tailored interventions addressing not only sexual health education and services, but also economic empowerment and illicit drug use is imperative for mitigating these risks.

From conceptualising to modelling structural determinants and interventions in HIV transmission dynamics models: a scoping review and methodological framework for evidence-based analyses

BACKGROUND

Including structural determinants (e.g. criminalisation, stigma, inequitable gender norms) in dynamic HIV transmission models is important to help quantify their population-level impacts and guide implementation of effective interventions that reduce the burden of HIV and inequalities thereof. However, evidence-based modelling of structural determinants is challenging partly due to a limited understanding of their causal pathways and few empirical estimates of their effects on HIV acquisition and transmission.

METHODS

We conducted a scoping review of dynamic HIV transmission modelling studies that evaluated the impacts of structural determinants, published up to August 28, 2023, using Ovid Embase and Medline online databases. We appraised studies on how models represented exposure to structural determinants and causal pathways. Building on this, we developed a new methodological framework and recommendations to support the incorporation of structural determinants in transmission dynamics models and their analyses. We discuss the data and analyses that could strengthen the evidence used to inform these models.

RESULTS

We identified 17 HIV modelling studies that represented structural determinants and/or interventions, including incarceration of people who inject drugs (number of studies [n] = 5), violence against women (n = 3), HIV stigma (n = 1), and housing instability (n = 1), among others (n = 7). Most studies (n = 10) modelled exposures dynamically. Almost half (8/17 studies) represented multiple exposure histories (e.g. current, recent, non-recent exposure). Structural determinants were often assumed to influence HIV indirectly by influencing mediators such as contact patterns, condom use, and antiretroviral therapy use. However, causal pathways' assumptions were sometimes simple, with few mediators explicitly represented in the model, and largely based on cross-sectional associations. Although most studies calibrated models using HIV epidemiological data, less than half (7/17) also fitted or cross-validated to data on the prevalence, frequency, or effects of exposure to structural determinants.

CONCLUSIONS

Mathematical models can play a crucial role in elucidating the population-level impacts of structural determinants and interventions on HIV. We recommend the next generation of models reflect exposure to structural determinants dynamically and mechanistically, and reproduce the key causal pathways, based on longitudinal evidence of links between structural determinants, mediators, and HIV. This would improve the validity and usefulness of predictions of the impacts of structural determinants and interventions.

East London Project: a participatory mixed-method evaluation on how removing enforcement could affect sex workers' safety, health and access to services in East London

Background

Sex workers' risk of violence and ill-health is shaped by their work environments, community and structural factors, including criminalisation.

Aim

We evaluated the impact of removing police enforcement on sex workers' safety, health and access to services.

Design

Mixed-methods participatory study comprising qualitative research, a prospective cohort study, mathematical modelling and routine data collation.

Setting

Three boroughs in London, UK.

Participants

People aged ≥ 18 years, who provided in-person sexual services.

Interventions

Simulated removal of police enforcement.

Outcomes

Primary - recent or past experience of sexual, physical or emotional violence. Secondary - depression/anxiety symptoms, physical health, chlamydia/gonorrhoea, and service access.

Results

A combination of enforcement by police, local authorities and immigration, being denied justice when reporting violence, and linked cuts to specialist health and support services created harmful conditions for sex workers. This disproportionately affected cisgender and transgender women who work on the streets, use drugs, are migrants and/or women of colour. Among women (n = 197), street-based sex workers experienced higher levels than indoor sex workers of recent violence from clients (73% vs. 36%), police (42% vs. 7%) and others (67% vs. 17%); homelessness (65% vs. 7%); anxiety and depression (71% vs 35%); physical ill-health (57% vs 31%); and recent law enforcement (87% vs. 9%). For street-based sex workers, recent arrest was associated with violence from others (adjusted odds ratio (AOR)) 2.77, 95% confidence interval (CI) 1.11 to 6.94). Displacement by police was associated with client violence (AOR 4.35; 95% CI 1.36 to 13.90) as were financial difficulties (AOR 4.66; CI 1.64 to 13.24). Among indoor sex workers, unstable residency (AOR 3.19; 95% CI 1.36 to 7.49) and financial difficulties (AOR 3.66; 95% CI 1.64 to 8.18) contributed to risk of client violence. Among all genders (n = 288), ethnically and racially minoritised sex workers (26.4%) reported more police encounters than white sex workers, partly linked to increased representation in street settings (51.4% vs. 30.7%; p = 0.002) but associations remained after adjusting for work setting. Simulated removal of police displacement and homelessness was associated with a 71% reduction in violence (95% credible interval 55% to 83%). Participants called for a redirection of funds from enforcement towards respectful, peer-led services.

Limitations

Restriction to one urban locality prevents generalisability of findings. More interviews with under-represented participants (e.g. trans/non-binary sex workers) may have yielded further insights into inequities. Correlation between different risk factors restricted outcomes of interest for the modelling analyses, which were largely limited to experience of violence.

Conclusion

Our research adds to international evidence on the harms of criminalisation and enforcement, particularly for women who work on street and/or are racially or ethnically minoritised. Findings add weight to calls to decriminalise sex work, tackle institutionally racist, misogynist and otherwise discriminatory practices against sex workers in police and other agencies, and to (re)commission experience-based, peer-led services by and for sex workers particularly benefiting the most marginalised communities.

Future work

Realist informed trials, co-produced with sex workers, would provide rigorous evidence on effective approaches to protect sex workers' health, safety and rights.

Funding

This synopsis presents independent research funded by the National Institute for Health and Care Research (NIHR) Public Health Research programme as award number 15/55/58.

Structural Barriers to Primary Care Among Sex Workers: Findings from a Community- Based Cohort in Vancouver, Canada (2014-2021)

Background

Due to structural marginalization, sex workers experience health inequities including a high prevalence of sexually transmitted and blood-borne infections, mental health disorders, trauma, and substance use, alongside a multitude of barriers to HIV and substance use services. Given limited evidence on sex workers' broader primary healthcare access, we aimed to examine structural factors associated with primary care access among sex workers over a 7-year period.

Methods

Data were derived from An Evaluation of Sex Workers Health Access (AESHA), a community-based open prospective cohort of women (cis and trans) sex workers in Metro Vancouver, from 2014 to 2021. Descriptive statistics were used to summarize the proportion of primary care use in the past six months and to assess primary care trends over time from 2014-2021. We used multivariate logistic regression with generalized estimating equations (GEE) to identify structural factors associated with primary care access (seeing a family doctor in the last six months), after adjusting for confounders.

Results

Amongst 646 participants, most (87.4%) accessed primary care at some point during the study period, and primary care use in the in the last 6 months was relatively stable (ranging from 60-78%) across each follow-up period. At first available observation, participants faced a high burden of sexually transmitted and blood-borne infections (STBBIs) (48.0%, 11.5%, and 10.4% were HCV, HIV, or STI seropositive, respectively), 56.8% were diagnosed with a mental health disorder, 8.1% had recently overdosed, and 14.7% were recently hospitalized. In multivariable GEE analysis, exposure to intimate partner violence was associated with reduced access to primary care (Adjusted odds ratios (AOR) 0.63, 95% Confidence interval (CI): 0.49 - 0.82), and limited English fluency was marginally associated (AOR 0.76 CI: 0.51 - 1.14).

Conclusions

This study characterized primary care access and its structural determinants among sex workers over 7-years. Participants faced a high burden of STBBIs and other health disparities, and a proportion faced gaps in primary care access. Scale-up of trauma-informed, culturally and linguistically tailored, sex worker-friendly primary care models are needed, alongside structural interventions to decriminalize and destigmatize sex work and substance use.

"You know that we travel a lot": Mobility narratives among female sex workers living with HIV in Tanzania and the Dominican Republic

Female sex workers (FSW) are highly mobile, which may result in reduced access to and use of health services and increased risk for poor health outcomes, particularly for those living with HIV. Mobility includes spatial, temporal, and social elements that are not fully captured by quantitative measures. We conducted two rounds of in-depth interviews with FSW living with HIV in Iringa, Tanzania (n = 20), and Santo Domingo, Dominican Republic (n = 20), to describe mobility experiences and compare mobility narratives across settings. We integrated a thematic analysis of all interviews with a narrative analysis of a subset of 10 information-rich interviews (five in each country) with women who had recently traveled, for sex work or another reason, outside of their hometown. Across narratives, FSW living with HIV traveled locally or to seasonal destinations, for short and long periods. Social factors influencing mobility included economic drivers; risk of arrest, harassment, or violence; anonymity and/or familiarity; social relationships; and clients' mobility. Spatial, temporal, and social factors intersected in unique ways in FSW's mobility experiences, yet distinct mobility typologies were evident across settings and destinations. Together, mobility narratives of FSW living with HIV can inform quantitative research on mobility typologies in Tanzania, the Dominican Republic, and elsewhere. With the potential for economic circumstances, climate change, and other emergencies to increase people's mobility around the world, researchers and practitioners can learn from the lived experiences of FSW to inform whether and how to tailor and improve the accessibility of HIV care and treatment interventions based on spatial, temporal, and social characteristics of mobility.

Understanding the contexts in which female sex workers sell sex in Kampala, Uganda: a qualitative study

BACKGROUND

Structural, interpersonal and individual level factors can present barriers for HIV prevention behaviour among people at high risk of HIV acquisition, including women who sell sex. In this paper we document the contexts in which women selling sex in Kampala meet and provide services to their clients.

METHODS

We collected qualitative data using semi-structured interviews. Women were eligible to participate if they were 18 years or older, self-identified as sex workers or offered sex for money and spoke Luganda or English. Ten women who met clients in venues and outdoor locations were selected randomly from a clinic for women at high risk of HIV acquisition. Ten other women who met clients online were recruited using snowball sampling. Interviews included demographic data, and themes included reasons for joining and leaving sex work, work locations, nature of relationships with clients and peers, interaction with authorities, regulations on sex work, and reported stigma. We conducted interviews over three months. Data were analysed thematically using a framework analysis approach. The coding framework was based on structural factors identified from literature, but also modified inductively with themes arising from the interviews.

RESULTS

Women met clients in physical and virtual spaces. Physical spaces included venues and outdoor locations, and virtual spaces were online platforms like social media applications and websites. Of the 20 women included, 12 used online platforms to meet clients. Generally, women from the clinic sample were less educated and predominantly unmarried, while those from the snowball sample had more education, had professional jobs, or were university students. Women from both samples reported experiences of stigma, violence from clients and authorities, and challenges accessing health care services due to the illegality of sex work. Even though all participants worked in settings where sex work was illegal and consequently endured harsh treatment, those from the snowball sample faced additional threats of cybersecurity attacks, extortion from clients, and high levels of violence from clients.

CONCLUSIONS

To reduce risk of HIV acquisition among women who sell sex, researchers and implementers should consider these differences in contexts, challenges, and risks to design innovative interventions and programs that reach and include all women.

Sexual health beliefs and prevention of sexually transmitted infections among cisgender women sex workers in Colombia

INTRODUCTION

The stigma and social discrimination against cisgender women sex workers lead many of them to live in conditions characterized by social inequality, marginalization, persecution, and limited opportunities for sexual health literacy. Consequently, they are often compelled to establish a framework of preventive beliefs with little scientific validity, which they use to identify, mitigate, or avoid sexual health risks arising from their interactions with clients. This study investigates the sexual health beliefs that influence self-care practices aimed at preventing sexually transmitted infections among cisgender women sex workers in Colombia.

METHODS

We conducted a qualitative study framed in Hermeneutic Phenomenology. In-depth interviews and discussion groups were conducted with 34 cisgender women sex workers over 18 years of age in the center of the cities of Bogotá and Barranquilla in Colombia.

RESULTS

Seven themes emerged from the reflective and inductive thematic analysis of the narratives: (1) popular habits for the prevention of contagion, (2) ocular assessment of genitals, (3) condom lubrication, (4) suspicion of a hidden infection in the client, (5) saliva and oral contact as a source of contagion, (6) avoidance of semen contact, (7) and trust in God as protection.

CONCLUSIONS

The findings reflect the need for health and social professionals to promote participatory and inclusive cooperation with sex workers to update the framework of preventive beliefs that help them guide sexual health self-care with autonomy and self-efficacy, strengthening favorable beliefs and negotiating unfavorable ones. It is also essential to have a sex worker-informed sexual health policy that guides the promotion of sexual health that is sensitive to the needs and consistent with the risks of sex work and ensures friendly and non-oppressive preventive care environments for sex workers.

HIV seroconversion among female sex workers: retrospective cohort study from a large-scale HIV prevention and sexual and reproductive health program in Tanzania

Introduction

In 2016, UNAIDS set ambitious targets to reduce global HIV infections by 75% by 2020 and 90% by 2030, based on the 2.1 million new infections reported in 2010. However, by 2022, new HIV infections had only decreased by 38%, from 2.1 million in 2010 to 1.3 million in 2022, raising concerns about reaching the 2030 goal. Female sex workers (FSWs) in sub-Saharan Africa face a disproportionately high risk of HIV acquisition, contributing 5%-20% of all new infections in several countries in the region. This analysis investigates HIV seroconversion and associated factors among FSWs, offering insights into critical interventions for preventing HIV transmission in this population and advancing the goal of ending the HIV pandemic by 2030.

Methods

We conducted a retrospective cohort study involving 17,977 FSWs who initially tested HIV negative upon enrollment in the Sauti project between October 2016 and September 2018. HIV incidence rates were calculated by dividing the number of new HIV cases by observed person-time within the cohort. Cox regression analysis identified factors associated with seroconversion.

Results

The study revealed an HIV incidence rate of 8.6 per 100 person-years among FSWs [95% confidence interval (CI): 8.1-9.1]. Factors independently associated with HIV seroconversion included age 35 years or older [adjusted hazard ratio (aHR): 2.53; 95% CI: 2.03-3.14], unprotected sex (aHR: 1.27; 95% CI: 1.13-1.42), STI symptoms (aHR: 1.99; 95% CI: 1.67-2.38), and alcohol consumption before sex (aHR: 1.20; 95% CI: 1.07-1.34).

Conclusion

Targeted interventions are vital in curbing HIV transmission among FSWs, with a focus on expanding access to primary HIV prevention services, particularly for older FSWs who face heightened risk. Tailored sexual health education programs are imperative to encourage consistent condom use and enable informed decision-making. Accessible and timely STI screening and treatment services are crucial to mitigate HIV transmission risk. Collaborative partnerships between healthcare providers, community organizations, and government agencies are essential in implementing these interventions among FSWs.

Pandemic-related challenges accessing food and primary healthcare among sex workers during the COVID-19 pandemic: findings from a community-based cohort in Vancouver, Canada

INTRODUCTION

Globally, the COVID-19 pandemic upended healthcare services and created economic vulnerability for many. Criminalization of sex work meant sex workers were largely ineligible for Canada's government-based financial pandemic relief, the Canadian Emergency Response Benefit. Sex workers' loss of income and inability to access financial support services during the pandemic resulted in many unable to pay rent or mortgage, and in need of assistance with basic needs items including food. Little is known about the unique experiences of sex workers who faced challenges in accessing food during the pandemic and its impact on healthcare access. Thus, we aimed to identify the association between pandemic-related challenges accessing food and primary healthcare among sex workers.

METHODS

Prospective data were drawn from a cohort of women sex workers in Vancouver, Canada (An Evaluation of Sex Workers' Health Access, AESHA; 2010-present). Data were collected via questionnaires administered bi-annually from October 2020-August 2021. We used univariate and multivariable logistic regression with generalized estimating equations to assess the association between pandemic-related challenges accessing food and challenges accessing primary healthcare over the study period.

RESULTS

Of 170 participants, 41% experienced pandemic-related challenges in accessing food and 26% reported challenges accessing healthcare. Median age was 45 years (IQR:36-53), 56% were of Indigenous ancestry, 86% experienced intimate partner violence in the last six months, and 62% reported non-injection substance use in the last six months. Experiencing pandemic-related challenges accessing food was positively associated with challenges accessing primary healthcare (Adjusted Odds Ratio: 1.99, 95% Confidence Interval: 1.02-3.88) after adjustment for confounders.

CONCLUSIONS

Findings provide insight about the potential role community-based healthcare delivery settings (e.g., community clinics) can play in ameliorating access to basic needs such as food among those who are highly marginalized. Future pandemic response efforts should also take the most marginalized populations' needs into consideration by establishing strategies to ensure continuity of essential services providing food and other basic needs. Lastly, policies are needed establishing basic income support and improve access to food resources for marginalized women in times of crisis.

AN EVALUATION OF INDOOR SEX WORKERS' PSYCHOSOCIAL OCCUPATIONAL HEALTH AND SAFETY IN METRO VANCOUVER, CANADA

Criminalization of sex work is linked to increased risk of violence and lack of workplace protections for sex workers. Most jurisdictions globally prohibit some or all aspects of sex work with New Zealand constituting a notable exception, where sex work has been decriminalized and regulated via OHS guidelines. We used the Guide to Occupational Health and Safety in the New Zealand Sex Industry (NZ Guide) as an analytical framework to examine the lived-experiences of psychosocial OHS conditions of indoor sex workers in Metro Vancouver under end-demand criminalization. We drew on 47 semi-structured interviews, conducted in English, Mandarin, and Cantonese in 2017-2018, with indoor sex workers and third parties providing services for them. Participants' narratives were analyzed using a coding framework based on the NZ Guide's psychosocial factors section, including safety and security from violence and complaints processes, which highlighted specific OHS shortcomings in the context of end-demand sex work legislation in indoor sex work environments. Participants identified a significant lack of OHS support, including a lack of safety training, right to refuse services, and access to justice in the context of labour rights violations or fraud, robbery or violence. Our findings emphasize the benefits of full decriminalization of sex work to facilitate sex workers' access to OHS through development and implementation of OHS guidelines designed by and for the indoor sex industry. OHS guidelines should focus on labour rights and protections, including development of sex workers' right to refuse services and access to justice.

Qualitative focus group discussions exploring PrEP method and service delivery preferences among female sex workers and their managers in four Zambian provinces

Objectives

To describe the experiences of oral HIV pre-exposure prophylaxis (PrEP) use, preferences comparing oral PrEP to future long-acting PrEP products (the dapivirine vaginal ring (PrEP ring) and injectable cabotegravir (CAB PrEP)), and service provision preferences among female sex workers (FSWs) and their managers.

Methods

Qualitative formative focus group discussions were conducted in two urban (Copperbelt, Lusaka) and two rural (Central, Luapula) provinces in Zambia. Consenting participants included 43 FSWs and 36 sex work managers. Eligible participants self-identified as FSWs or sex work managers, were 18 years or older and spoke English, Nyanja or Bemba.

Results

FSWs had a median age of 28 years and 60% reported ever using oral PrEP. Among potential future HIV prevention options, most FSWs preferred longer acting PrEP methods, mainly CAB PrEP over the PrEP ring. This preference was consistent across provinces. Many FSWs had personal oral PrEP experience and appreciated the high effectiveness but conveyed that the realities of daily use, including pill visibility, and attributed side effects did not meet their needs. FSWs and managers also identified frequent stigma and misinformation-related barriers to PrEP access and use at community and facility levels. Most FSWs and managers agreed that informing non-paying or long-term partners of PrEP use was acceptable. Participants offered recommendations for greater sensitisation and peer-led services or service extension through trusted figures in the community.

Conclusions

Zambian FSWs and their managers preferred longer acting PrEP methods, particularly CAB PrEP, as part of comprehensive HIV prevention method choice, with little difference between provinces. PrEP programming led by FSW peers, managers or other trusted figures was recommended to address misinformation, sensitise partners and potentially deliver services to circumvent perceived stigma at health facilities.

Differential Burden of HIV Among Adolescent Girls and Young Women by Places Associated With Sex Work: An Observational Study in Mombasa, Kenya

BACKGROUND

The design of HIV prevention programs for adolescent girls and young women (AGYW) are informed by data on who is at highest risk and where they can be reached. Places (hotspots) associated with selling sex are an established outreach strategy for sex work (SW) programs but could be used to reach other AGYW at high risk.

SETTING

This study took place in Mombasa, Kenya.

METHODS

We conducted a cross-sectional, bio-behavioural survey among (N = 1193) sexually active AGYW aged 14-24 years recruited at hotspots. We compared HIV prevalence by subgroup (SW; transactional sex, TS; and non-transactional sex), stratified by hotspot type (venues and nonvenues). We examined whether associations between HIV prevalence and hotspot/subgroup remained after adjustment for individual-level risk factors, and estimated HIV prevalence ratio with and without adjustment for these individual-level factors.

RESULTS

Overall HIV prevalence was 5.6%, 5.3% in venues and 7.3% in nonvenues. Overall SW HIV prevalence was 2-fold higher than among participants engaged in nontransactional sex. After adjusting for age and individual-level risk factors, HIV prevalence was 2.72 times higher among venue-based SWs (95% confidence interval: 1.56 to 4.85) and 2.11 times higher among nonvenue AGYW not engaged in SW (95% confidence interval: 0.97 to 4.30) compared with venue-based AGYW not engaged in SW.

CONCLUSION

AGYW who sell sex remain at high risk of HIV across types of hotspots. The residual pattern of elevated HIV burden by AGWY subgroup and hotspot type suggests that unmeasured, network-level factors underscore differential risks. As such, hotspots constitute a "place" to reach AGYW at high risk of HIV.

Factors associated with viral load testing and viral suppression among HIV-positive female sex workers in Nigeria

BACKGROUND

Female sex workers (FSWs) are at high risk for HIV infection and face unique barriers to receiving and adhering to testing and treatment. Early viral suppression and consistent viral load testing are critical to optimizing health and reducing transmission in this population. However, the factors associated with testing and successful viral suppression among FSWs are poorly understood, especially in Sub-Saharan Africa. Our study aimed to examine factors, including social, demographic, and clinical characteristics, associated with viral load testing and suppression among female sex workers initiating antiretroviral therapy in Nigeria.

METHODS

In this retrospective study, we analyzed routine programmatic data from FSWs enrolled in the National HIV Key Populations (KP) program in Nigeria. We included FSWs who were newly diagnosed with HIV and registered between January 2016 and January 2022. Primary outcomes of interest were a), receiving a viral load test at any point after treatment initiation and b), viral suppression (<1000 copies/ml) at the test closest to 6 months after treatment initiation. To identify factors associated with the outcomes of interest, we used univariable and multivariable logistic regression, with random intercepts for care facilities, and multiple imputation for missing values.

FINDINGS

Out of 34,976 FSWs, 97.1% (n = 33,945) received at least one viral load test, with 94.5% (n = 32,092) indicating viral suppression. The odds of receiving at least one viral load test were higher for those who entered treatment in more recent years, those with formal education and those with advanced HIV stages at baseline (adjusted odds ratios [aOR]: 1.17 [1.14-1.19] for those who entered treatment in 2020 vs. 2016; 1.02 [1.01-1.03] for post-secondary vs. no education; and 1.05 [1.01-1.10] for WHO clinical stage 3/4 vs. stage 1 respectively). The odds of successful viral suppression were higher for those who entered treatment in more recent years, but lower for those with advanced HIV stages at baseline (aOR: 1.13 [1.09-1.18] for 2022 vs. 2016; and 0.92 [0.87-0.98] for WHO clinical stage 3/4 vs. stage 1 respectively).

CONCLUSIONS

The study underscored the relevance of timely diagnosis and ART initiation for optimal outcomes among HIV-positive FSWs in Nigeria. We also observed significant improvements in the likelihood of early viral load testing and suppression over the study period, reflecting advancements in the KP program. Further research should clarify factors driving these trends to further strengthen the HIV care pipeline for female sex workers.

ART coverage and viral suppression among female sex workers living with HIV in eThekwini, South Africa: Baseline findings from the Siyaphambili study

In South Africa >60% of female sex workers (FSW) are living with HIV, the majority of whom are not virally suppressed. Identifying multi-level determinants of viral suppression is central to developing implementation strategies to promote retention in HIV care and viral suppression among FSW with unmet treatment needs. Adult cisgender FSW living with HIV for ≥6 months, conducting sex work as their primary source of income, and residing in Durban (South Africa) were enrolled into the Siyaphambili Study, a sequential multiple assignment randomized trial. Baseline viral load and CD4 were assessed, and an interviewer-administered survey was conducted, capturing socio-demographic, reproductive and sexual history and behaviors, vulnerabilities, substance use, mental health, and stigma. We assessed baseline determinants of viral suppression (<50 copies/mL) using bivariate and multivariable robust poisson regression, considering associations across the individual, network, environmental and macrostructural levels. From June 2018 -March 2020, 1,644 women were screened, with 1,391 eligible FSW living with HIV enrolled. The analyses were conducted among the 1,373 participants with baseline data. Overall, 65% (889/1,373) of participants were reported to be on antiretroviral therapy and 38% (520/1,373) were virally suppressed. In the multivariable model, FSW who experienced a lack of housing in the prior six months were less likely to be virally suppressed (aPR: 0.72, 95%CI 0.56-0.91), while older FSW (aPR: 1.46 95%CI: 1.16-1.83 for 30-39 years old vs. 18-29 years old; aPR: 2.15 95%CI: 1.64-2.80 for 40+ years vs. 18-29 years old) and FSW reporting hormonal or long-acting contraception use were more likely to be virally suppressed (aPR: 1.19 95% CI: 1.00-1.43). We found vulnerability to be high among FSW living with HIV in South Africa and identified individual and structural determinants associated with viral suppression. Taken together these results suggest optimizing HIV treatment outcomes necessitates supporting younger sex workers and addressing housing instability. Trial registration: NCT03500172.

Epidemiology of an overlapping and parallel infection of Sexually Transmitted Infections among pregnant women in North-east Ethiopia: Its implication for prevention of mother to child transmission

BACKGROUND

The burden of parallel and overlapping infections of Sexually Transmitted Infections (STIs), particularly HIV, syphilis, hepatitis B (HBV), and hepatitis C virus (HCV) are disproportionately higher among pregnant women globally, leading to unwanted consequences. These infections pose significant public health challenges as they can be transmitted vertically to the offspring. This study aimed to determine the sero-epidemiological patterns and predictors of STIs (HIV, syphilis, HBV, and HCV) among pregnant women attending antenatal care clinics at ten health facilities in North-eastern Ethiopia.

METHODS

An institution-based multi-center cross-sectional study was conducted from May to November 2022 among 422 pregnant women selected using simple random sampling technique. Semi-structured questionnaire was used to collect socio-demographic characteristics and predictor variables of STIs through face-to-face interviews. Venous blood was collected and it was tested for anti-HIV, HBsAg, anti-HCV, and anti-Treponemal antibodies using immunochromatographic test kits. Multinomial logistic regression analysis was used to identify associated factors of STIs. Variables with an adjusted odds ratio (AOR) and a p-value <0.05 were considered statistically significant.

RESULTS

The overall prevalence of STIs was 23.9% (95% CI = 20.08-28.25). The prevalence of parallel infections of HIV, hepatitis B, hepatitis C, and syphilis were 6.4%, 9%, 1.7%, and 6.9%, respectively. The overlapping infections for HIV-HBV was 4% but HIV-HCV overlapping infection wasn't found. Increased age, tattooing, multiple sexual partners, exposure to unsafe sex, and RH status were independent factors of HBV. Likewise, increased age, rural residence, illiteracy, and tattooing were independently associated with HCV. Moreover, rural residence and a history of tattooing were independent predictors for the acquisition of HIV, whereas multiple sexual partners and RH status were found to be significant predictors of syphilis infection among pregnant women.

CONCLUSION

The magnitude of overlapping and parallel STD infections is still continued to be a problem among pregnant women. Moreover, there were overlapping infections of HBV-HIV. Therefore, continuous screening of pregnant women for HIV, syphilis, hepatitis B, and C infections should be performed, and special attention should be given to pregnant women who have co-infections.

Costing of a Combination Intervention (Kyaterekera) Addressing Sexual Risk-Taking Behaviors among Vulnerable Women in Southern Uganda

In Uganda, women engaged in sex work (WESW) are a marginalized population at the intersection of multiple vulnerabilities. The Kyaterekera intervention is targeted at WESW in Rakai and the greater Masaka regions in Uganda and combines a traditional HIV risk-reduction approach with a savings-led economic empowerment intervention and financial literacy training. We estimated the economic costs of the Kyaterekera intervention from a program provider perspective using a prospective activity-based micro-costing method. All program activities and resource uses were measured and valued across the control arm receiving a traditional HIV risk-reduction intervention and the treatment arm receiving a matched individual development savings account and financial literacy training on top of HIV risk reduction. The total per-participant cost by arm was adjusted for inflation and discounted at an annual rate of 3% and presented in 2019 US dollars. The total per-participant costs of the control and intervention arms were estimated at $323 and $1,435, respectively, using the per-protocol sample. When calculated based on the intent-to-treat sample, the per-participant costs were reduced to $183 and $588, respectively. The key cost drivers were the capital invested in individual development accounts and personnel and transportation costs for program operations, linked to WESW's higher mobility and the dispersed pattern of hot spot locations. The findings provide evidence of the economic costs of implementing a targeted intervention for this marginalized population in resource-constrained settings and shed light on the scale of potential investment needed to better achieve the health equity goal of HIV prevention strategies.

The impact of policing and homelessness on violence experienced by women who sell sex in London: a modelling study

Street-based sex workers experience considerable homelessness, drug use and police enforcement, making them vulnerable to violence from clients and other perpetrators. We used a deterministic compartmental model of street-based sex workers in London to estimate whether displacement by police and unstable housing/homelessness increases client violence. The model was parameterized and calibrated using data from a cohort study of sex workers, to the baseline percentage homeless (64%), experiencing recent client violence (72%), or recent displacement (78%), and the odds ratios of experiencing violence if homeless (1.97, 95% confidence interval 0.88-4.43) or displaced (4.79, 1.99-12.11), or of experiencing displacement if homeless (3.60, 1.59-8.17). Ending homelessness and police displacement reduces violence by 67% (95% credible interval 53-81%). The effects are non-linear; halving the rate of policing or becoming homeless reduces violence by 5.7% (3.5-10.3%) or 6.7% (3.7-10.2%), respectively. Modelled interventions have small impact with violence reducing by: 5.1% (2.1-11.4%) if the rate of becoming housed increases from 1.4 to 3.2 per person-year (Housing First initiative); 3.9% (2.4-6.9%) if the rate of policing reduces by 39% (level if recent increases had not occurred); and 10.2% (5.9-19.6%) in combination. Violence reduces by 26.5% (22.6-28.2%) if half of housed sex workers transition to indoor sex work. If homelessness decreased and policing increased as occurred during the COVID-19 pandemic in 2020, the impact on violence is negligible, decreasing by 0.7% (8.7% decrease-4.1% increase). Increasing housing and reducing policing among street-based sex workers could substantially reduce violence, but large changes are needed.

Social and structural drivers of HIV vulnerability among a respondent-driven sample of feminine and non-feminine presenting transgender women who have sex with men in Zimbabwe

INTRODUCTION

We sought to characterize social and structural drivers of HIV vulnerability for transgender women (TGW) in Zimbabwe, where TGW are not legally recognized, and explore differences in vulnerability by feminine presentation.

METHODS

A secondary analysis was conducted with a sub-sample of participants recruited from a 2019 respondent-driven sampling survey that comprised men who have sex with men, TGW and genderqueer individuals assigned male sex at birth, from two cities in Zimbabwe. Survey questionnaires captured information related to socio-demographics, sexual and substance use behaviours, and social and structural barriers to HIV services. Secondary analyses were restricted to participants who identified as female, transfemale or transwomen (236/1538) and were unweighted. Descriptive statistics were used to calculate sample estimates and chi-square and Fisher's exact tests were used to assess differences in vulnerability by feminine presentation.

RESULTS

Among 236 TGW, almost half (45.3%) presented as feminine in the 6 months preceding the survey and 8.5% had ever used hormones to affirm their gender identities. Median age among TGW was 23 years (interquartile range: 20-26). Feminine presenting TGW in our sample had higher prevalence of arrest (15.9% vs. 3.9%), rejection by family/friends (38.3% vs. 14.0%), employment termination (11.2% vs. 3.9%), employment refusal (14.0% vs. 3.9%), denial of healthcare (16.8% vs. 2.3%), physical, sexual or verbal harassment or abuse (59.8% vs. 34.1%), alcohol dependence (32.7% vs. 12.4%), recent transactional sex with a male or TGW partner (30.8% vs. 13.3%) and recent non-injection drug use (38.3% vs. 20.2%) than non-feminine presenting TGW (all p-value <0.05).

CONCLUSIONS

Findings suggest that TGW, particularly feminine presenting TGW, experience social and structural inequities which may contribute to HIV vulnerability. Interventions aimed at addressing inequities, including trans competency training for providers and gender-affirming, psychosocial and legal support services for TGW, might mitigate risk.

Correlates of Client-Perpetrated Violence Against Female Sex Workers in Bogotá

This paper aims to estimate the prevalence of client-perpetrated violence against female sex workers (FSWs) in Bogotá and to understand what structural and environmental factors are associated with such victimization. The project used secondary data from interviews with 2,684 FSWs. Multivariable binary logistic regression was used to test for associations with client-perpetrated violence. Findings reveal that factors such as experiencing police harassment and social stigma were positively associated with client-perpetrated violence. Situational factors such as providing services in motels, hotels, on the street, and in cars were also associated with increased odds of becoming a victim of violence.

Polysubstance Use Profiles and HIV Viremia in a South African Cohort of Female Sex Workers: A Latent Class Analysis

BACKGROUND

Given intersecting social and structural factors, female sex workers (FSW) exhibit elevated risk of HIV and substance use. However, there is limited study of how distinct substance use typologies influence HIV treatment outcomes among FSW.

SETTING

A cross-sectional survey with objective viral load assessments of 1391 FSW enrolled into a treatment optimization-focused trial in Durban, South Africa (2018-2020).

METHODS

We used latent class analysis to uncover discrete patterns in past-month self-reported use of the following substances: heavy alcohol use, cannabis, cocaine, crack, ecstasy, methamphetamine, heroin, and Whoonga . We used Wald tests to identify multilevel predictors of latent class membership and multivariable mixture modeling to quantify associations of substance use classes with HIV viremia (≥50 RNA copies/mL).

RESULTS

Substance use (87%) and HIV viremia (62%) were highly prevalent. Latent class analysis uncovered 3 polysubstance use profiles: Heavy Alcohol Use Only (∼54%); Cannabis, Heavy Alcohol, & Crack Use (∼28%); and Whoonga & Crack Use (∼18%). Whoonga & Crack Use was associated with social and structural adversities, including homelessness, outdoor/public sex work, HIV stigma, and violence. Relative to Heavy Alcohol Use Only , HIV viremia was significantly higher in the Whoonga & Crack Use class (adjusted odds ratio 1.97, 95% confidence interval: 1.13 to 3.43), but not in the Cannabis, Heavy Alcohol, & Crack Use class (adjusted odds ratio 1.17, 95% confidence interval: 0.74 to 1.86).

CONCLUSION

HIV viremia differed significantly across identified polysubstance use profiles among South African FSW. Integrating drug treatment and harm reduction services into HIV treatment programs is key to improving virologic outcomes in marginalized communities.

Substance use, economic vulnerability, and HIV/STI risk among female sex workers in Mexico

BACKGROUND

Economic hardship (e.g., difficulty to pay for basic needs) has been associated with increased HIV/STI risk among female sex workers (FSW), and may be exacerbated by high levels of substance use. Few studies have assessed the intersection of economic hardship, substance use, and HIV/STI risk among FSW.

METHODS

Quantitative data were collected via questionnaires among 469 FSW residing in Tijuana and Ciudad Juarez, Mexico. Using logistic regression, we assessed the role of economic hardship on the association between substance use (past 30-days alcohol use, drug use, or injection drugs use with clients, and past 6-months drug use) and testing positive for an STI (also an indicator of HIV risk).

RESULTS

Drug use in the preceding six months was significantly associated with testing positive for an STI (AOR = 1.8, CI: 1.1 = 2.9, p = .02); no difference in this association was found by whether women reported economic hardship. Past 30-day drug use with clients was associated with STI infection, but only among those who did not report economic hardship (AOR = 1.5, 95% CI: 1.1-1.9, p < .01).

CONCLUSIONS

Findings suggest that economic hardship influences the association between substance use and increased risk for HIV/STI among FSW; however, these associations may be more complex than previously hypothesized.

Examining HIV Knowledge and Sexually Risky Behaviors among Female Sex Workers in Kampala, Uganda

HIV incidence remains alarmingly high among female sex workers (FSWs) in Uganda, necessitating targeted interventions. This study aimed to identify individual and provider-level barriers and facilitators to primary HIV prevention among FSWs in an urban setting. Focus groups involving FSWs and healthcare providers (HCPs) were conducted to inform the development of tailored prevention interventions. Results revealed that all participants had mobile phones, recent sexual activity, and a history of HIV testing, with high rates of sexually transmitted infections and varying HIV test results. FSWs displayed a well-informed awareness of HIV transmission risks, emphasizing the threat for those not testing positive. They unanimously recognized the crucial role of HIV testing in informing, mitigating risks, promoting ART use, and endorsing consistent condom usage. Despite heightened awareness, HCPs noted potential underestimation of vulnerability. Various challenges, including inadequate condom usage, substance abuse, and client dynamics, underscored the complexity of safeguarding against HIV transmission among FSWs. Widespread alcohol and drug use, including marijuana, kuber, and khat, served as coping mechanisms and social facilitators. Some FSWs successfully reduced alcohol intake, highlighting challenges in addressing substance use. FSWs preferred group discussions in health education programs, emphasizing peer interactions and the effectiveness of visual aids in HIV prevention education. This study provides comprehensive insights to guide the development of targeted interventions addressing the multi-faceted challenges FSWs face in HIV prevention.

Social and structural determinants associated with the prevalence of sexually transmitted infections among female commercial sex workers in Dhaka City, Bangladesh

Female commercial sex workers (FCSWs) bear higher rates of sexually transmitted infections (STIs) among key populations. The association of structural determinants and STIs among FCSWs was not at the forefront of research earlier in Bangladesh. This study examined how structural factors correlate with the prevalence of STIs at physical/social/economic/policy levels among FCSWs in Dhaka city. 495 FCSWs were screened for HIV, hepatitis B, and syphilis. Structural variables (Individual risks, high-risk sexual behaviors, work environments) were extracted from the previous multi-level study on FCSWs and analyzed in 2020 to determine whether macro/micro-structural factors were associated with STIs. The prevalence of STIs was 43.6% (95% CI: 39.1%-48). Most (n = 207/495) FCSWs were infected with Syphilis or Hepatitis B, only 1.8% had co-infection, and none was positive for HIV. Multiple logistic regression revealed that 'Individual risk' factors like age (≤18 years, adjusted odds ratio = AOR = .28; 18.1-29.9 years, AOR = .57), years in the sex industry (<1 year AOR = .15; 1-5 years, AOR = .39), and condoms as contraceptives (AOR = 2.7) were significantly associated with STIs. Considering 'High-risk behaviors' like monthly coitus with regular clients (AOR = .33), performing no anal sex ever (AOR = .03), and consistent condom use (AOR = .13) were less likely to be associated with STIs (P<0.05), while the association of ever group sex with STIs reported to double (AOR = 2.1). 'Work environment' like sex on roads/parks/shrines/markets (AOR = 2.6) and ever HIV-testing (AOR = 2.5) were significantly linked with STIs. However, micro-level factors like experiencing forced sex in the past year (AOR = 1.79) and condoms collected from hotel boys (AOR = .34) were significantly associated with STIs in the 'Hierarchical- model' with increasing model-power. 'Micro-structural' determinants predominated over 'Macro/policy-level factors' and profoundly influenced STIs. FCSWs need comprehensive and integrated interventions to promote accurate condom use perception, eliminate risky sexual behaviors, and provide quality reproductive health care. Necessary steps at the policy level are urgently needed to decriminalize commercial sex work.

Mobility paradoxes: disruptors, benefits, and agency among mobile female sex workers living with HIV in the Dominican Republic and Tanzania

BACKGROUND

Mobility is a key social determinant of health for female sex workers (FSWs). While extant research has focused on the adverse effects of mobility for FSWs, there are very few studies that have examined the multiple ways in which mobility may impact the lives of these mobile women from their perspective. This qualitative study aims to fill this gap by exploring how mobility impacts the lives, livelihoods, and HIV care and treatment from the perspectives of women living with HIV in two epidemic settings, the Dominican Republic and Tanzania.

METHODS

We conducted two rounds of in-depth interviews with 12 Dominican women and 12 Tanzanian women who were 18 years plus, had an HIV-positive diagnosis, and reported having exchanged sex for money in the last month. We utilized thematic analysis with a focus on intra- and intercomparisons to observe patterns within and across the two contexts.

RESULTS

We identified a salient pattern of three thematic "mobility paradoxes," which related to both disruptors and benefits of sex work mobility: (1) uncertainty versus autonomy: while sex work mobility often took place in contexts of vulnerability, which often led to women experiencing violence, it simultaneously benefitted women by allowing them to choose where they stayed and make plans on their terms; (2) financial insecurity versus profitability: although participants sometimes made less money than expected when they traveled for sex work, there was a powerful economic benefit for mobile women as it increased their likelihood of profitability; and (3) disorder and interruptions versus strategy and social support in HIV care and treatment: participants reported that they were sometimes inconsistent with their HIV appointments and medications when they traveled for sex work. On the other hand, mobility contributed to participants often becoming more strategic and creative in their HIV care and treatment and relying on one another for support.

CONCLUSIONS

Findings indicate that sex work mobility is a nuanced, complex, and paradoxical phenomenon. Implications include the development of strengths-based and community empowerment mobile health initiatives tailored to mitigate disruptors of mobility while maximizing benefits for this population.

The epidemiology of HIV infection among female sex workers in Nairobi, Kenya: A structural determinants and life-course perspective

High HIV prevalence among female sex workers (FSWs) is heavily influenced by structural determinants (e.g. criminalisation of sex work; violence) and significant life events (e.g. orphanhood, teenage pregnancy). This study aims to understand the epidemiology of HIV among FSWs in Nairobi, Kenya using a structural determinants and life-course perspective. Baseline cross-sectional survey data were collected June-December 2019 for the Maisha Fiti study with 1003 FSWs (aged 18-45 years). Odds ratios and 95% confidence intervals were estimated using multivariable logistic regression with a hierarchical modelling approach. HIV prevalence was 28.0%, and increased with age (<25 years 5.7%, 25-34 years 19.0%, ≥35 years 40.6%). In adjusted analyses, HIV seroprevalence was associated with childhood and adolescence including violence from militia or soldiers (AOR = 1.60; 95%CI:1.00-2.53), young age at sexual debut (≤15 years old vs. ≥18 years AOR = 0.57; 95%CI:0.39-0.84) and teenage pregnancy (AOR = 1.37; 95%CI:1.00-1.88). For adulthood the factors included lower SES score (lowest vs. highest tertile AOR = 0.63; 95%CI:0.40-0.98); reduced housing insecurity (AOR = 0.52; 95%CI:0.54-0.79); lower alcohol/drug use score (AOR = 0.44; 95%CI:0.31-0.61); and a longer duration of selling sex (0-5 years vs. ≥11 years AOR = 2.35; 95%CI:1.44-3.82). Among HIV-negative FSWs, prevalence of HIV risk factors was high (recent hunger 32.3%; internalised 67.7% and experienced 66.0% sex work stigma; recent police arrest 30.1%; recent physical or sexual violence 65.6%, condomless last sex intimate partner 71.1%; harmful alcohol or substance use 49.1%). Only 24.6% of HIV-negative FSWs reported taking PrEP. Taken together, adverse events in childhood and adolescence were associated with increased odds of living with HIV, and were more strongly associated with HIV serostatus than adulthood structural or behavioural risk factors. HIV-negative FSWs remain at high risk of HIV acquisition. This study highlights the importance of addressing adverse events throughout the life course to reduce HIV risk, and the need to continue multi-level HIV prevention and treatment efforts.

HIV disclosure without consent linked to increased violence against women living with HIV in a Canadian setting

Our study examined the association between HIV disclosure without consent and verbal and/or physical violence due to HIV status among women living with HIV (WLWH). This study draws on baseline data of a sample (N = 316) from SHAWNA, a longitudinal community-based open cohort with WLWH in Metro Vancouver, Canada (2010-2019). Bivariate and multivariable logistic regression was used to investigate factors associated with physical and/or verbal violence due to HIV status. Adjusted odds ratios (AOR) and 95% confidence intervals [95%CIs] are reported. In total, 46.5% experienced non-consensual disclosure of HIV status without consent and 34.2% experienced physical and/or verbal violence related to HIV status in their lifetime. In multivariable analysis, HIV disclosure without consent was associated with increased odds of experiencing HIV-related physical and/or verbal violence (AOR: 7.46[4.21-13.21]). Lifetime exposure to homelessness was also associated with increased odds of physical and/or verbal violence due to HIV status (AOR: 2.15[1.03-4.49]). This research underscores the reality of HIV stigmatization and criminalization and suggests a critical need to remove HIV disclosure from the reach of criminal law and ensure women's rights to confidentiality. Governments and organizations must work to identify and address the drivers of various levels of stigma and gender-based violence and invest in inclusive, trauma-informed, culturally safe support and care programs and policies designed in collaboration with WLWH.

"I Have to Do It in Secrecy": Provider Perspectives on HIV Service Delivery and Quality of Care for Key Populations in Zambia

ABSTRACT

Key populations (KPs) experience suboptimal outcomes along the HIV care and prevention continua, but there is limited study of the challenges service providers encounter delivering HIV services to KPs, particularly in settings like Zambia, where provision of these services remains legally ambiguous. Seventy-seven providers completed in-depth interviews exploring constraints to HIV service delivery for KPs and recommendations for improving access and care quality. Thematic analysis identified salient challenges and opportunities to service delivery and quality of care for KPs, spanning interpersonal, institutional, and structural domains. Limited provider training in KP-specific needs was perceived to influence KP disclosure patterns in clinical settings, impeding service quality. The criminalization of KP sexual and drug use behaviors, coupled with perceived institutional and legal ambiguities to providing HIV services to KPs, cultivated unwelcoming service delivery environments for KPs. Findings elucidate opportunities for improving HIV service delivery/quality, from decentralized care to expanded legal protections for KPs and service providers.

A potential transition from a concentrated to a generalized HIV epidemic: the case of Madagascar

BACKGROUND

HIV expansion is controlled by a range of interrelated factors, including the natural history of HIV infection and socio-economical and structural factors. However, how they dynamically interact in particular contexts to drive a transition from concentrated HIV epidemics in vulnerable groups to generalized epidemics is poorly understood. We aim to explore these mechanisms, using Madagascar as a case-study.

METHODS

We developed a compartmental dynamic model using available data from Madagascar, a country with a contrasting concentrated epidemic, to explore the interaction between these factors with special consideration of commercial and transactional sex as HIV-infection drivers.

RESULTS

The model predicts sigmoidal-like prevalence curves with turning points within years 2020-2022, and prevalence reaching stabilization by 2033 within 9 to 24% in the studied (10 out of 11) cities, similar to high-prevalence regions in Southern Africa. The late/slow introduction of HIV and  circumcision, a widespread traditional practice in Madagascar, could have slowed down HIV propagation, but, given the key interplay between risky behaviors associated to young women and acute infections prevalence, mediated by transactional sex, the protective effect of circumcision is currently insufficient to contain the expansion of the disease in Madagascar.

CONCLUSIONS

These results suggest that Madagascar may be experiencing a silent transition from a concentrated to a generalized HIV epidemic. This case-study model could help to understand how this HIV epidemic transition occurs.