Assessing the impact of mass rape on the incidence of HIV in conflict-affected countries

A Scoping Review of Factors Associated with HIV Acquisition in the Context of Humanitarian Crises

Humanitarian crises-natural or human-made events that can threaten communities' health, safety, security, and well-being-may affect the HIV epidemic dynamics. Common aspects of humanitarian crises such as poverty, powerlessness, disruptions to the health systems, and social instability can contribute to a person's vulnerability to HIV infection through increased risk behaviors and limited access to health services. Guided by the Joanna Briggs Institute methodology for scoping reviews and the Preferred Reporting Items for Systematic Reviews and Meta-Analysis extension for Scoping Reviews (PRISMA-ScR) reporting guidelines, we conducted a scoping review of literature published in English between January 1990 and March 2022 to characterize the global evidence of modifiable and non-modifiable factors for HIV acquisition in the context of humanitarian crises. We systematically searched, screened, and synthesized literature from MEDLINE, Embase, Global Health (all accessed via Ovid), and Scopus, and also grey literature through websites of humanitarian agencies and relevant non-government organizations, the International AIDS Society's abstract databases, and Google Scholar. We considered studies presenting empirical data on HIV prevalence, incidence, or risk factors in humanitarian crises-affected populations, including refugees, asylum seekers, and internally displaced persons. Forty-nine studies met the inclusion criteria. The majority of studies were quantitative (n = 43, 87.8%) and cross-sectional (n = 37, 75.5%) in design. Most were single-country studies (n = 43, 87.8%) and conducted in Sub-Saharan Africa (n = 31, 63.3%). We identified 5 non-modifiable factors for HIV acquisition (i.e., age, gender, location, place of birth or origin, and ethnicity) and 60 modifiable factors that we further classified into five categories, namely 18 policy and structural, 9 sociocultural, 11 health and mental health, 16 sexual practice, and 6 humanitarian crisis-related traumatic event factors. Within the modifiable categories, factors that were most often investigated were education level, marital status, sexually transmitted infection diagnosis, condom use, and experience of rape or sexual trauma, respectively. Informed by the findings, we applied the social-ecological model to map the identified multidimensional factors associated with HIV acquisition at the levels of individual, social and sexual networks, community, public policy, and the context of humanitarian crises. The current review provides a comprehensive, global analysis of the available evidence on HIV prevalence, incidence, and risk factors in humanitarian crises and implications for potential programs and research. Future research is warranted to further understand the directionality of the non-modifiable and modifiable factors affecting HIV acquisition, and the multilevel barriers and facilitators to the uptake of HIV prevention strategies in the context of humanitarian crises. Such research can generate actionable evidence to inform the development of ethical, trauma-informed, and culturally appropriate HIV prevention interventions in humanitarian settings.

Exposure to Armed Conflict and HIV Risk Among Rwandan Women

This article focuses on the link between past exposure to violence and a critical public health issue in sub-Saharan Africa: HIV-positive status in women of reproductive age. Specifically, we use biosocial data from the Rwandan Demographic and Health Survey (2005‒2014) to assess how the timing and intensity of women's exposure to the war and genocide in Rwanda (1990‒1994) may be associated with their HIV status. We find significant differences in risk across age cohorts, with the late adolescence cohort (women born in 1970‒1974, who were aged 16‒20 at the start of the conflict) having the highest risk of being HIV positive 10‒20 years after the violence, even after controlling for current socioeconomic and demographic characteristics. Women who reported two or more sibling deaths, excluding those related to maternal mortality, during the conflict years also had higher odds of being HIV positive, net of cohort and control variables. Age at first sexual intercourse and number of lifetime sexual partners partially-but not fully-explain the associations between cohort and sibling deaths and HIV. These findings advance research related to armed conflict and population health and indicate that experiencing conflict during key stages of the life course and at higher intensity may affect women's long-term sexual health.

Blood-borne infections and pregnancies among women attending a sexual violence assistance center in Brazil: A 10-year retrospective study

INTRODUCTION

Sexually transmitted infections (STI) and pregnancy can be consequences of sexual violence. In Brazil, around 50% of women victims of sexual violence do not undergo STI prophylaxis or emergency contraception.

OBJECTIVES

To analyze socio-demographic and epidemiological profile, frequency of procedures performed, frequency of blood-borne infections (BBI), pregnancy, and legal abortion in women assisted by a sexual violence assistance center.

PATIENTS AND METHODS

This 10-year retrospective cohort study (2010-2019) describes the socio-demographic and epidemiological profile and frequencies of clinical procedures, BBI, pregnancies, and legal abortions in 915 women assisted in a sexual violence assistance center in Brazil. We extracted data from the medical records and used descriptive statistics and chi-square and logistic regression.

RESULTS

A total of 93.3% (842/915) were residents in the Metropolitan Area of the capital, 80,83% (733/915) were brown-skinned or white, 42.4% (388/915) were adolescents (12-17 years old), 80.4% (736/915) were single, most had no children, average of 1.8 (±1.0 DP) children. About one-third (313/915) had not had previous sexual intercourse, 1.6% (10/653) were pregnant. Rape predominated with 92.0% (841/915), of which 51.5% (471/915) involved a known or related aggressor, mostly an acquaintance, followed by a stepfather or father. Recurrent cases were 24.0% (227/915).

CLINICAL PROCEDURES

42.6% (390/915) were attended within 72 hours and received STI prophylaxis 43.4% (392/904); emergency contraception 38.6% (349/904); blood collection 71.6% (647/904). Prevalence: syphilis 0.3% (2/653); hepatitis B 0.2% (1/653); pregnancy 1.6% (10/653). Incidences: syphilis 1.1% (7/633); hepatitis B 0.8% (5/633); hepatitis C 0.6% (4/633); pregnancy 27.2% (172/633). There were no HIV cases. Trichomoniasis at 1.9% (2/108), HPV-induced cytological lesions at 4.7% (5/108), and bacterial vaginosis at 20.0% (21/108) were found on cervicovaginal samples. There were 129 legal abortions.

CONCLUSIONS

The socio-demographic aspects and the characteristics of the aggressions in the studied population are like those described in the Brazilian national database, including the remarkable number of adolescents. STI prophylaxis and emergency contraception were performed in less than half of the women. The incidence of pregnancy was higher among those women reporting firearms threats and lower among those receiving STI prophylaxis. The frequency of legal abortion was higher than in national data. Public policies ensuring access to sexual and reproductive health rights and strategies to improve the quality of care for women victims of sexual violence and education improvement may decrease vulnerability to STI and unintended pregnancies.

Increase in HIV incidence in women exposed to rape

OBJECTIVE

To determine the incidence of HIV acquisition in women postrape compared with a cohort of women who had not been raped.

DESIGN

A prospective cohort study.

METHODS

The Rape Impact Cohort Evaluation study based in Durban, South Africa, enrolled women aged 16-40 years from postrape care services, and a control group of women from Primary Healthcare services. Women who were HIV negative at baseline (441 in the rape-exposed group and 578 in the control group) were followed for 12-36 months with assessments every 3 months in the first year and every 6 months thereafter. Multivariable Cox regression models adjusted for baseline and time varying covariates were used to investigate the effect of rape exposure on HIV incidence over follow-up.

RESULTS

Eighty-six women acquired HIV during 1605.5 total person-years of follow-up, with an incident rate of 6.6 per 100 person-years [95% confidence interval (CI): 4.8-9.1] among the rape exposed group and 4.7 per 100 person-years (95% CI: 3.5-6.2) among control group. After controlling for confounders (age, previous trauma, social support, perceived stress, multiple partners and transactional sex with a casual partner), women exposed to rape had a 60% increased risk of acquiring HIV [adjusted hazard ratio: 1.59 (95% CI: 1.01-2.48)] compared with those not exposed. Survival analysis showed difference in HIV incident occurred after month 9.

CONCLUSION

Rape is a long-term risk factor for HIV acquisition. Rape survivors need both immediate and long-term HIV prevention and care.

Sexual and Gender-Based Violence Among Refugees and Internally Displaced Persons in the Democratic Republic of the Congo: Post-Conflict Scenario

The ongoing humanitarian crisis in the Democratic Republic of the Congo has triggered sexual and gender-based violence, including rape, sexual slavery, trafficking, intimate partner violence, and sexual exploitation. Gender inequalities and abuse of power experienced by women and young girls at refugee settings further exacerbate their vulnerability to different forms of violence. This study aimed to offer an evidence-based approach to developing strategies in tackling the complex problem of sexual and gender-based violence among refugees and internally displaced persons in the Congo. We conducted a narrative review of all the relevant papers known to the authors to explore the origins of the problem, its implications on public health, and its impact on equity. The study revealed that sexual assault survivors face physical and psychological sufferings, excruciating emotions, and profound disruption of their social well-being since they are often stigmatized and ostracized by society. The analysis of current government policies revealed a lack of programs to address survivors' specific concerns and policy enforcement problems. This study suggested strategic objectives and policy implementation steps. The proposed strategies address women empowerment and gender stigma, provision of effective health services, and adequate response action.

Providing TB and HIV outreach services to internally displaced populations in Northeast Nigeria: Results of a controlled intervention study

BACKGROUND

A decade of Boko Haram insurgency brought conflict, mass displacement, and the destruction of basic infrastructure to Northeast Nigeria. Over 2 million internally displaced persons (IDPs) suffering from lack of basic hygienic conditions, malnutrition, and disease live in camps or are hosted by communities in the region, where the conflict has contributed to a massive destruction of health facilities. Infectious diseases like tuberculosis (TB) and HIV are especially difficult to address under such conditions, and IDPs are vulnerable to both. Although international investment supports some health interventions among IDPs, locally sourced solutions are lacking.

METHODS AND FINDINGS

We evaluated the impact of an active case finding (ACF) intervention for TB and testing for HIV in IDP communities and provided linkages to treatment in 3 states in Northeast Nigeria: Adamawa, Gombe, and Yobe. The ACF was a component of a multistakeholder collaboration between government, civil society, and IDP community partners, which also included mapping of IDP populations and health services, supporting existing health facilities, developing a sample transport network, and organizing community outreach to support ACF. Between July 1, 2017, and June 30, 2018, ACF was conducted in 26 IDP camps and 963 host communities in 12 local government areas (LGAs) with another 12 LGAs serving as a control population. Outreach efforts resulted in 283,556 screening encounters. We screened 13,316 children and 270,239 adults including 150,303 (55.6%) adult women and 119,936 (44.4%) men. We tested 17,134 people for TB and 58,976 for HIV. We detected 1,423 people with TB and 874 people living with HIV. We linked 1,419 people to anti-TB treatment and 874 people with HIV to antiretroviral treatment sites. We evaluated additional TB cases notified and conducted comparative interrupted time series (ITS) analyses to assess the impact of ACF on TB case notifications. Through our efforts, bacteriologically confirmed TB notifications increased by 847 (45.1%) during the intervention period, with IDPs accounting for 46% of these notifications. The ITS analyses detected significant positive postintervention trend differences in TB notification rates between the intervention and control areas in all forms TB (incidence rate ratio [IRR] = 1.136 [1.072, 1.204]; p ≤ 0.001) and bacteriologically positive TB (IRR = 1.141 [1.058, 1.229]; p = 0.001). The TB prevalence (502 cases per 100,000 screening encounters) was 10 times the national notification rates and 2.3 times the estimated national incidence. Rates of HIV infection (1.8%) were higher than HIV prevalence estimates in the 3 states. Our study was limited by the nonrandom selection of LGAs. Furthermore, we did not use sensitive screening tools like chest X-ray and likely missed people with TB.

CONCLUSIONS

In this study, we observed a burden of TB in IDP populations of Northeast Nigeria many times higher than national rates and HIV rates higher than state level estimates. The impact of the intervention showed that ACF can greatly increase TB case notifications. Engaging IDP communities, local governments, and civil society organizations is essential to ensuring the success of interventions targeting TB and HIV, and such approaches can provide sustained solutions to these and other health crises among vulnerable populations.

Factors associated with HIV and syphilis infection among female sex workers in three cities in Papua New Guinea: findings from Kauntim mi tu, a biobehavioral survey

Background In this paper, factors associated with HIV and syphilis infection in three cities in Papua New Guinea are explored. Methods: Respondent-driven sampling surveys among FSW in Port Moresby, Lae, and Mt. Hagen (2016–17) were conducted. FSW who were aged ≥12 years, who were born female, who spoke English or Tok Pisin and who had sold or exchanged vaginal sex in the past 6 months were eligible to participate. Participants were interviewed face-to-face and offered rapid HIV and syphilis testing. Survey logistic procedures were used to identify factors associated with HIV and syphilis infection, including modern contraception use, physical violence and having a casual male partner. Weighted data analysis was conducted. Results: Overall, 2901 FSW (Port Moresby, 673; Lae, 709; and Mt. Hagen, 709) were enrolled in the study. HIV prevalence was 15.2% in Port Moresby, 11.9% in Lae and 19.6% in Mt. Hagen. Factors associated with HIV varied by city; for example, use of modern contraception in Port Moresby, experiences of physical violence in Lae and ever having tested for HIV in Mt. Hagen. No one variable was associated with HIV in all cities. Prevalence of syphilis infection was 7.1%, 7.0%, and 3.0% in Port Moresby, Lae, and Mt. Hagen, respectively. Factors associated with syphilis infection also varied by city and were only significant in Lae. Conclusion: The different factors associated with HIV and syphilis infection in each city highlight the complex HIV and syphilis epidemics among FSW and the importance of conducting surveys in multiple locations and developing local interventions.

Sexually Transmitted Infection Positivity Rate and Treatment Uptake Among Female and Male Sexual Assault Victims Attending The Amsterdam STI Clinic Between 2005 and 2016

Sexually transmitted infection positivity among female sexual assault victims was comparable to nonvictims. Adjusted for confounders, male victims had lower odds for a sexually transmitted infection than did nonvictims. Return rate of victims for treatment was high.

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Background

Victims could become infected with sexually transmitted infections (STIs) during a sexual assault. Several guidelines recommend presumptive antimicrobial therapy for sexual assault victims (SAVs). We assessed the STI positivity rate and treatment uptake of female and male SAVs at the Amsterdam STI clinic.

Methods

Sexual assault victims answered assault-related questions and were tested for bacterial STI (chlamydia, gonorrhea, and syphilis), hepatitis B, and HIV during their initial visits. Sexual assault victim characteristics were compared with non-SAV clients. Backward multivariable logistic regression analysis was conducted to assess whether being an SAV was associated with a bacterial STI. The proportion of those returning for treatment was calculated.

Results

From January 2005 to September 2016, 1066 (0.6%) of 168,915 and 135 (0.07%) of 196,184 consultations involved female and male SAVs, respectively. Among female SAVs, the STI positivity rate was 11.2% versus 11.6% among non-SAVs (P = 0.65). Among male SAVs, the STI positivity rate was 12.6% versus 17.7% among non-SAVs (P = 0.12). In multivariable analysis, female SAVs did not have increased odds for an STI (odds ratio 0.94; 95% confidence interval, 0.77–1.13), and male SAVs had significantly lower odds for an STI (odds ratio, 0.60; 95% confidence interval, 0.36–0.98). Of SAVs requiring treatment, 89.0% (female) and 92.0% (male) returned.

Conclusions

The STI positivity rate among female SAVs was comparable with female non-SAVs, but male SAVs had lower odds for having a bacterial STI than did male non-SAVs, when adjusting for confounders. The return rate of SAV for treatment was high and therefore does not support the recommendations for presumptive therapy.

Evolution of a Disease Surveillance System: An Increase in Reporting of Human Monkeypox Disease in the Democratic Republic of the Congo, 2001-2013

Objective

Evaluating the effectiveness of a surveillance system, and how it improves over time has significant implications for disease control and prevention. In the Democratic Republic of Congo (DRC), the Integrated Disease Surveillance and Response (IDSR) was implemented to estimate the burden of disease, monitor changes in disease occurrence, and inform resource allocation. For this effort we utilized national passive surveillance data from DRC's IDSR to explore reporting trends of human monkeypox (MPX) from 2001 to 2013.

Methods

We obtained surveillance data on MPX cases occurring between January 2001 and December 2013 from the DRC Ministry of Health (MoH). Phases of the surveillance system, yearly trends in reporting and estimated incidence for MPX were analyzed using SAS v9.2 and Health Mapper.

Results

Between 2001 and 2013, three discrete surveillance phases were identified that described the evolution of the surveillance system. Overall, an increase in suspected MPX cases was reported, beyond what would be expected from simply an improved reporting system. When restricting the analysis to the "stable phase," national estimated incidence increased from 2.13 per 100,000 in 2008 to 2.84 per 100,000 in 2013.

Conclusions

The reported increase in MPX, based on an evolving surveillance system, is likely to be a true increase in disease occurrence rather than simply improvements to the surveillance system. Further analyses should provide critical information for improved prevention and control strategies and highlight areas of improvement for future data collection efforts.

HIV Incidence Prior to, during, and after Violent Conflict in 36 Sub-Saharan African Nations, 1990-2012: An Ecological Study

Objectives

The aim of this study was to determine the association between violent conflict and HIV incidence within and across 36 sub-Saharan Africa countries between 1990 and 2012.

Methods

We used generalized linear mixed effect modeling to estimate the effect of conflict periods on country-level HIV incidence. We specified random intercepts and slopes to account for across and within country variation over time. We also conducted a sub-analysis of countries who experienced conflict to assess the effect of conflict intensity on country-level HIV incidence. All models controlled for level of economic development, number of refugees present in the country, and year.

Results

We found that, compared to times of peace, the HIV incidence rate increased by 2.1 per 1000 infections per year (95%CI: 0.39, 3.87) in the 5 years prior to conflict. Additionally, we found a decrease of 0.7 new infections per 1000 people per year (95%CI: -1.44, -0.01) in conflicts with 25 to 1000 battle-related deaths and a decrease of 1.5 new infections per 1000 people per year (95%CI:-2.50, -0.52) for conflict with more than 1000 battle-related deaths, compared to conflicts with less than 25 battle-related deaths

Conclusions

Our results demonstrate that HIV infection rates increase in the years immediately prior to times of conflict; however, we did not identify a significant increase during and immediately following periods of violent conflict. Further investigation, including more rigorous data collection, is needed, as is increased aid to nations at risk of violent conflict to help in the fight against HIV/AIDS in sub-Saharan Africa.

HIV infection and risk factors among the armed forces personnel stationed in Kinshasa, Democratic Republic of Congo

Despite recent declines in HIV incidence, sub-Saharan Africa remains the most heavily affected region in the global HIV/AIDS epidemic. Estimates of HIV prevalence in African military personnel are scarce and inconsistent. We conducted a serosurvey between June and September 2007 among 4043 Armed Forces personnel of the Democratic Republic of Congo (FARDC) stationed in Kinshasa, Democratic Republic of Congo (DRC) to determine the prevalence of HIV and syphilis infections and describe associated risk behaviours. Participants provided blood for HIV and syphilis testing and responded to a demographic and risk factor questionnaire. The prevalence of HIV was 3.8% and the prevalence of syphilis was 11.9%. Women were more likely than men to be HIV positive, (7.5% vs. 3.6% respectively, aOR: 1.66, 95% C.I: 1.21-2.28, p < 0.05). Factors significantly associated with HIV infection included gender and self-reported genital ulcers in the 12 months before date of enrollment. The prevalence of HIV in the military appears to be higher than the general population in DRC (3.8% vs. 1.3%, respectively), with women at increased risk of infection.

The impact of HIV status, HIV disease progression, and post-traumatic stress symptoms on the health-related quality of life of Rwandan women genocide survivors

PURPOSE

We examined whether established associations between HIV disease and HIV disease progression on worse health-related quality of life (HQOL) were applicable to women with severe trauma histories, in this case Rwandan women genocide survivors, the majority of whom were HIV-infected. Additionally, this study attempted to clarify whether post-traumatic stress symptoms were uniquely associated with HQOL or confounded with depression.

METHODS

The Rwandan Women's Interassociation Study and Assessment was a longitudinal prospective study of HIV-infected and uninfected women. At study entry, 922 women (705 HIV+ and 217 HIV-) completed measures of symptoms of post-traumatic stress and HQOL as well as other demographic, clinical, and behavioral characteristics.

RESULTS

Even after controlling for potential confounders and mediators, HIV+ women, in particular those with the lowest CD4 counts, scored significantly worse on HQOL and overall quality of life (QOL) than did HIV- women. Even after controlling for depression and HIV disease progression, women with more post-traumatic stress symptoms scored worse on HQOL and overall QOL than women with fewer post-traumatic stress symptoms.

CONCLUSIONS

This study demonstrated that post-traumatic stress symptoms were independently associated with HQOL and overall QOL, independent of depression and other confounders or potential mediators. Future research should examine whether the long-term impact of treatment on physical and psychological symptoms of HIV and post-traumatic stress symptoms would generate improvement in HQOL.

Access to HIV prevention services among gender based violence survivors in Tanzania

INTRODUCTION

Currently, Tanzania's HIV prevalence is 5.7%. Gender inequality and Gender Based Violence (GBV) are among factors fuelling the spread of HIV in Tanzania. This study was conducted to assess universal access to HIV prevention services among GBV survivors in Iringa and Dar-es-Salaam where HIV prevalence is as high as 14.7% and 9% respectively compared to a national average of 5.7%.

METHODS

In 2010, a mixed methods study using triangulation model was conducted in Iringa and Dar-es-Salaam regions to represent rural and urban settings respectively. Questionnaires were administered to 283 randomly selected survivors and 37 health providers while 28 in-depth interviews and 16 focus group discussions were conducted among various stakeholders. Quantitative data was analyzed in SPSS by comparing descriptive statistics while qualitative data was analyzed using thematic framework approach.

RESULTS

Counseling and testing was the most common type of HIV prevention services received by GBV survivors (29%). Obstacles for HIV prevention among GBV survivors included: stigma, male dominance culture and fear of marital separation. Bribery in service delivery points, lack of confidentiality, inadequate GBV knowledge among health providers, and fear of being involved in legal matters were mentioned to be additional obstacles to service accessibility by survivors. Reported consequences of GBV included: psychological problems, physical trauma, chronic illness, HIV infection.

CONCLUSION

GBV related stigma and cultural norms are obstacles to HIV services accessibility. Initiation of friendly health services, integration of GBV into HIV services and community based interventions addressing GBV related stigma and cultural norms are recommended.

The physiology of sexual violence, genito-anal injury and HIV: opportunities for improving risk estimation

Increased understanding about the relative contribution of genito-anal injury to HIV transmission may improve epidemic model estimates of the distribution of risk among and across different subpopulations. Better understanding about the distribution of HIV among subpopulations that are at highest risk of sexual violence can also improve the design and prioritization of combination prevention interventions that are most likely to reduce the risk of sexual violence and its potential contribution to HIV transmission. The effective incorporation of physiological and social variables into epidemic modelling will likely require new research approaches that can help communicate the level of risk associated with different types of 'heterosexual' transmission. Reference models that reflect the potential impact of sexual violence and genital injury can help direct attention toward key variables and uncertainties. For further research that clarifies these relationships will require multidisciplinary collaboration among groups with expertise in epidemiology, social science, public health, and clinical and basic science.

Greentree white paper: sexual violence, genitoanal injury, and HIV: priorities for research, policy, and practice

The links between sexual violence, genitoanal injury, and HIV are understudied but potentially significant for understanding the epidemic's disproportionate impacts on young women and girls, particularly in sub-Saharan Africa, other hyperendemic areas, and conflict-affected regions. A Scientific Research Planning Meeting was convened by the Social Science Research Council at the Greentree Foundation in New York, March 19-20, 2012, bringing together an interdisciplinary group of researchers, clinicians, and policy makers to identify knowledge needs and gaps in three key areas: (1) the role of genitoanal injury on HIV transmission, acquisition, and pathogenesis; (2) the influence of sex and age-related anatomic characteristics on HIV transmission, acquisition, and pathogenesis; and (3) the role of heterosexual anal intercourse in HIV transmission. This article reflects the consensus that emerged from the Greentree Meeting regarding priority scientific research questions in these three areas, associated data collection and measurement challenges and opportunities, and implications for policy and practice.

Burden of HIV among female sex workers in low-income and middle-income countries: a systematic review and meta-analysis

BACKGROUND

Female sex workers are a population who are at heightened risk of HIV infection secondary to biological, behavioural, and structural risk factors. However, three decades into the HIV pandemic, understanding of the burden of HIV among these women remains limited. We aimed to assess the burden of HIV in this population compared with that of other women of reproductive age.

METHODS

We searched PubMed, Embase, Global Health, SCOPUS, PsycINFO, Sociological Abstracts, CINAHL (Cumulative Index to Nursing and Allied Health Literature), Web of Science, and POPLine for studies of female sex workers in low-income and middle-income countries published between Jan 1, 2007, and June 25, 2011. Studies of any design that measured the prevalence or incidence of HIV among female sex workers, even if sex workers were not the main focus of the study, were included. Meta-analyses were done with the Mantel-Haenszel method with a random-effects model characterising an odds ratio for the prevalence of HIV among female sex workers compared with that for all women of reproductive age.

FINDINGS

Of 434 selected articles and surveillance reports, 102 were included in the analyses, representing 99,878 female sex workers in 50 countries. The overall HIV prevalence was 11·8% (95% CI 11·6-12·0) with a pooled odds ratio for HIV infection of 13·5 (95% CI 10·0-18·1) with wide intraregional ranges in the pooled HIV prevalence and odds ratios for HIV infection. In 26 countries with medium and high background HIV prevalence, 30·7% (95% CI 30·2-31·3; 8627 of 28,075) of sex workers were HIV-positive and the odds ratio for infection was 11·6 (95% CI 9·1-14·8).

INTERPRETATION

Although data characterising HIV risk among female sex workers is scarce, the burden of disease is disproportionately high. These data suggest an urgent need to scale up access to quality HIV prevention programmes. Considerations of the legal and policy environments in which sex workers operate and actions to address the important role of stigma, discrimination, and violence targeting female sex workers is needed.

FUNDING

The World Bank, UN Population Fund.