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Jin G, Shi H, Du J, Guo H, Yuan G, Yang H, Zhu Z, Zhang J, Zhang K, Zhang X, Lu X, Xu W, Wang S, Hao J, Sun Y, Su P, Zhang Z. Pre-Exposure Prophylaxis Care Continuum for HIV Risk Populations: An Umbrella Review of Systematic Reviews and Meta-Analyses. AIDS Patient Care STDS 2023; 37:583-615. [PMID: 38011347 DOI: 10.1089/apc.2023.0158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023] Open
Abstract
Pre-exposure prophylaxis (PrEP) is an effective biomedical strategy for HIV prevention. This umbrella review is aimed at providing a comprehensive summary of the current status of each stage of the PrEP care cascade. A systematic literature search was conducted in PubMed, Embase, and Cochrane. Additionally, a Measurement Tool to Assess Systematic Reviews 2 (AMSTAR-2) tool and Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) checklist were used to evaluate their methodological and reporting quality, respectively. A total of 30 systematic reviews met the inclusion criteria. According to the results of methodological quality assessment, 3 reviews were rated as low, while 27 as critically low. Furthermore, the results of the reporting quality evaluation revealed a mean score of 23.03 for the included reviews. Across all the reviews, awareness of PrEP was generally moderate in all populations, and the acceptability was even higher compared with awareness. Unfortunately, the PrEP uptake among different groups was even less optimal, although the adherence was almost above moderate, and several barriers that hindered the utilization of PrEP were identified, and the most common are as follows: cost, stigma, lack of knowledge, mistrust, low risk perception, and more. Although PrEP has proven to be an effective prevention method to date, the promotion of PrEP failed to achieve the anticipated outcome. To reinforce the generalization of and use of PrEP, and effectively control HIV transmission, it is urgent to identify the underlying causes of low uptake rates so that efficient interventions can be implemented.
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Affiliation(s)
- Guifang Jin
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Haiyan Shi
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Jun Du
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Haiyun Guo
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Guojing Yuan
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Huayu Yang
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Zhihui Zhu
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Jianghui Zhang
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Kexin Zhang
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Xueqing Zhang
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Xiaoyan Lu
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Wenzhuo Xu
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Sainan Wang
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Jiahu Hao
- Department of Maternal, Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Ying Sun
- Department of Maternal, Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Puyu Su
- Department of Maternal, Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Zhihua Zhang
- Department of Epidemiology and Biostatistics and Child, & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
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Coukan F, Murray KK, Papageorgiou V, Lound A, Saunders J, Atchison C, Ward H. Barriers and facilitators to HIV Pre-Exposure Prophylaxis (PrEP) in Specialist Sexual Health Services in the United Kingdom: A systematic review using the PrEP Care Continuum. HIV Med 2023; 24:893-913. [PMID: 37078101 DOI: 10.1111/hiv.13492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 03/20/2023] [Indexed: 04/21/2023]
Abstract
OBJECTIVES HIV pre-exposure prophylaxis (PrEP) delivery in the UK is inequitable; over 95% of PrEP users were men who have sex with men (MSM) despite making up less than 50% of new HIV diagnoses. We conducted a systematic review to identify modifiable barriers and facilitators to PrEP delivery in the UK among underserved populations. METHODS We searched bibliographic/conference databases using the terms HIV, PrEP, barriers, facilitators, underserved populations, and UK. Modifiable factors were mapped along the PrEP Care Continuum (PCC) to identify targets for interventions. RESULTS In total, 44 studies were eligible: 29 quantitative, 12 qualitative and three mixed-methods studies. Over half (n = 24 [54.5%]) exclusively recruited MSM, whereas 11 were in mixed populations (all included MSM as a sub-population) and the other nine were in other underserved populations (gender and ethnicity minorities, women, and people who inject drugs). Of the 15 modifiable factors identified, two-thirds were at the PrEP contemplation and PrEParation steps of the PCC. The most reported barriers were lack of PrEP awareness (n = 16), knowledge (n = 19), willingness (n = 16), and access to a PrEP provider (n = 16), whereas the more reported facilitators were prior HIV testing (n = 8), agency and self-care (n = 8). All but three identified factors were at the patient rather than provider or structural level. CONCLUSIONS This review highlights that the bulk of the scientific literature focuses on MSM and on patient-level factors. Future research needs to ensure underserved populations are included and prioritized (e.g. ethnicity and gender minorities, people who inject drugs) and provider and structural factors are investigated.
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Affiliation(s)
- Flavien Coukan
- National Institute for Health Research Applied Research Collaboration North West London, Chelsea and Westminster Hospital, London, UK
- Patient Experience Research Centre, School of Public Health, Imperial College London, London, UK
| | - Keitumetse-Kabelo Murray
- National Institute for Health Research Applied Research Collaboration North West London, Chelsea and Westminster Hospital, London, UK
- Patient Experience Research Centre, School of Public Health, Imperial College London, London, UK
| | - Vasiliki Papageorgiou
- Patient Experience Research Centre, School of Public Health, Imperial College London, London, UK
| | - Adam Lound
- Patient Experience Research Centre, School of Public Health, Imperial College London, London, UK
| | - John Saunders
- UCL Centre for Clinical Research in Infection and Sexual Health, Institute for Global Health, University College London, London, UK
- Blood Safety, Hepatitis, Sexually Transmitted Infections (STI) and HIV Division, UK Health Security Agency, London, UK
| | - Christina Atchison
- Patient Experience Research Centre, School of Public Health, Imperial College London, London, UK
- National Institute for Health Research Imperial Biomedical Research Centre, London, UK
| | - Helen Ward
- National Institute for Health Research Applied Research Collaboration North West London, Chelsea and Westminster Hospital, London, UK
- Patient Experience Research Centre, School of Public Health, Imperial College London, London, UK
- National Institute for Health Research Imperial Biomedical Research Centre, London, UK
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McNulty MC, Kerman J, Devlin SA, Pyra M, Rusie L, Curoe K, Thompson L, Mason JA, Friedman EE, Uvin AZ, Brown CH, Schneider J, Patel R. PrEP Persistence Support and Monitoring in Areas of High HIV Burden in the Midwestern United States. AIDS Educ Prev 2023; 35:235-246. [PMID: 37410372 DOI: 10.1521/aeap.2023.35.3.235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
Monitoring pre-exposure prophylaxis (PrEP) metrics can guide service delivery yet does not occur routinely. We developed a survey to understand current practices for monitoring PrEP at PrEP-providing organizations in Illinois and Missouri. The survey was distributed from September through November 2020; 26 organizations participated. Most respondents indicated ongoing efforts to screen for PrEP eligibility (66.7%), link to care (87.5%), and retain clients in care (70.8%); 70.8% reported collecting data on PrEP initiation, 41.7% on retention in care, and 37.5% on missed visits. Barriers to monitoring PrEP metrics included lack of IT support (69.6%), manual processes (69.6%), and lack of staff resources (65.2%). Most respondents offered clients support for PrEP retention and adherence and wanted to expand interventions for PrEP persistence, yet fewer monitored corresponding metrics. To enhance PrEP implementation, organizations should improve monitoring and evaluation of PrEP metrics along the entire continuum and respond with appropriate services to support clients.
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Affiliation(s)
- Moira C McNulty
- Department of Medicine, Section of Infectious Diseases and Global Health, University of Chicago, Chicago, Illinois
- Chicago Center for HIV Elimination, University of Chicago, Chicago, Illinois
| | - Jared Kerman
- Department of Medicine, Section of Infectious Diseases and Global Health, University of Chicago, Chicago, Illinois
- Chicago Center for HIV Elimination, University of Chicago, Chicago, Illinois
| | - Samantha A Devlin
- Department of Medicine, Section of Infectious Diseases and Global Health, University of Chicago, Chicago, Illinois
- Chicago Center for HIV Elimination, University of Chicago, Chicago, Illinois
| | - Maria Pyra
- Department of Medicine, Section of Infectious Diseases and Global Health, University of Chicago, Chicago, Illinois
- Chicago Center for HIV Elimination, University of Chicago, Chicago, Illinois
- Howard Brown Health, Chicago, Illinois
- Department of Medical Social Science, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | | | - Kate Curoe
- Division of Infectious Diseases, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Liz Thompson
- Howard Brown Health, Chicago, Illinois
- City Colleges of Chicago-Malcolm X College
| | - Joseph A Mason
- Department of Medicine, Section of Infectious Diseases and Global Health, University of Chicago, Chicago, Illinois
- Chicago Center for HIV Elimination, University of Chicago, Chicago, Illinois
| | - Eleanor E Friedman
- Department of Medicine, Section of Infectious Diseases and Global Health, University of Chicago, Chicago, Illinois
- Chicago Center for HIV Elimination, University of Chicago, Chicago, Illinois
| | - A Ziggy Uvin
- Department of Medicine, Section of Infectious Diseases and Global Health, University of Chicago, Chicago, Illinois
- Chicago Center for HIV Elimination, University of Chicago, Chicago, Illinois
- Boston University School of Medicine
| | - C Hendricks Brown
- Center for Prevention Implementation Methodology, Northwestern University, Chicago, Illinois
| | - John Schneider
- Department of Medicine, Section of Infectious Diseases and Global Health, University of Chicago, Chicago, Illinois
- Chicago Center for HIV Elimination, University of Chicago, Chicago, Illinois
| | - Rupa Patel
- Division of Infectious Diseases, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
- Whitman-Walker Health, Washington, D.C
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Ugarte A, de la Mora L, García D, Martínez-Rebollar M, de Lazzari E, Torres B, Inciarte A, Ambrosioni J, Chivite I, Solbes E, de Loredo N, Del Carlo GF, González-Cordón A, Blanco JL, Martínez E, Mallolas J, Laguno M. Evolution of Risk Behaviors, Sexually Transmitted Infections and PrEP Care Continuum in a Hospital-Based PrEP Program in Barcelona, Spain: A Descriptive Study of the First 2 Years' Experience. Infect Dis Ther 2022; 12:425-442. [PMID: 36520330 PMCID: PMC9753893 DOI: 10.1007/s40121-022-00733-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/15/2022] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION Pre-exposure prophylaxis (PrEP) is effective for HIV prevention, but the PrEP care continuum also involves improving PrEP awareness, uptake, adherence, and retention in care. Users' awareness is often compromised because of vulnerability factors and risk behaviors, such as chemsex practice or specific substance use, which could lead to risk compensation. Correct adherence and retention in care are essential to achieve the full effectiveness of PrEP. This study describes changes in users' risk behaviors and sexually transmitted infections (STIs), as well also PrEP care continuum details. METHODS This was a descriptive single-center retrospective study including adults at high HIV risk screened between November 2019 and June 2021 in the PrEP program of our hospital. Demographic, behavioral, STI, adherence, and retention in care variables were assessed. Data were collected from medical records and self-report questionnaires. RESULTS A total of 295 people were included, 94% men and 5% transgender women, with a mean age of 34 years (SD 10) and 10% sex workers. At baseline, 55% disclosed chemsex practice and 3% slamming. During follow-up, condom use for anal intercourse decreased from 41% to 13% (p ≤ 0.0001) and one HIV infection was detected; other risk behaviors and STIs remained stable. Chemsex, group sex, fluid exchange, and condomless anal intercourse were related to STI risk. Adherence was correct in 80% of users, and retention in care was 57%. Discontinuations and loss to follow-up were high, mainly affecting transgender women, sex workers, and people practicing fisting. CONCLUSION PrEP program implementation in our hospital was adequate, since it allowed, in a population at high HIV risk, overall users' risk behaviors and STIs to remain stable, with only one HIV diagnosis during the follow-up. We should target specific strategies to improve adherence and retention in care, as vulnerable subgroups at higher risk of loss to follow-up are identified.
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Affiliation(s)
- Ainoa Ugarte
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036, Barcelona, Spain.
| | - Lorena de la Mora
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - David García
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - María Martínez-Rebollar
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Elisa de Lazzari
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Berta Torres
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Alexy Inciarte
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Juan Ambrosioni
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Iván Chivite
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Estela Solbes
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Nicolás de Loredo
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Guillermo Federico Del Carlo
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Ana González-Cordón
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - José Luis Blanco
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Esteban Martínez
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Josep Mallolas
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
| | - Montserrat Laguno
- Infectious Diseases Department, HIV/AIDS Unit, Hospital Clinic of Barcelona, Villarroel Street 170, 08036 Barcelona, Spain
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Shrestha I, Ming K, Jimenez V, Wendelborn J, Vazquez A, Steward W, Scott H, Saberi P. Lessons Learned from an HIV Pre-Exposure Prophylaxis Coordination Program in San Francisco Primary Care Clinics. AIDS Res Hum Retroviruses 2022; 38:611-614. [PMID: 35592996 PMCID: PMC9419977 DOI: 10.1089/aid.2022.0013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
HIV pre-exposure prophylaxis (PrEP) has shown high efficacy and effectiveness for HIV prevention; however, many individuals with PrEP indications are not receiving PrEP. PrEP Coordinators work closely with patients and health care providers to increase PrEP access, and they provide unique insights into the inner workings of PrEP care and service delivery. In this study, we discuss key challenges and recommendations for improved PrEP service delivery (including training PrEP Coordinators to manage PrEP panels, making PrEP a part of routine care and optimizing electronic health records, designating a PrEP "champion" who can strengthen communication and leadership, using a proactive approach to increase PrEP retention, and training providers and PrEP Coordinators to meet youth-specific needs) from our discussions with the PrEP Coordinators who led PrEP panel management in San Francisco Department of Public Health primary care clinics.
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Affiliation(s)
- Isha Shrestha
- Department of Medicine, University of California, San Francisco, San Francisco, California, USA
| | - Kristin Ming
- Department of Medicine, University of California, San Francisco, San Francisco, California, USA
| | - Veronica Jimenez
- Department of Medicine, University of California, San Francisco, San Francisco, California, USA
| | - James Wendelborn
- Department of Medicine, University of California, San Francisco, San Francisco, California, USA
| | - Alexander Vazquez
- Department of Medicine, University of California, San Francisco, San Francisco, California, USA
| | - Wayne Steward
- Department of Medicine, University of California, San Francisco, San Francisco, California, USA
| | - Hyman Scott
- Bridge HIV, San Francisco Department of Public Health, San Francisco, California, USA
| | - Parya Saberi
- Department of Medicine, University of California, San Francisco, San Francisco, California, USA
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Guy D, Doran J, White TM, van Selm L, Noori T, Lazarus JV. The HIV pre-exposure prophylaxis continuum of care among women who inject drugs: A systematic review. Front Psychiatry 2022; 13:951682. [PMID: 36090369 PMCID: PMC9459118 DOI: 10.3389/fpsyt.2022.951682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/25/2022] [Indexed: 12/02/2022] Open
Abstract
INTRODUCTION People who inject drugs have a substantial risk for HIV infection, especially women who inject drugs (WWID). HIV pre-exposure prophylaxis (PrEP), a highly-effective HIV prevention drug, is uncommonly studied among WWID, and we aimed to synthesize existing knowledge across the full PrEP continuum of care in this population. METHODS We systematically searched for peer-reviewed literature in three electronic databases, conference abstracts from three major HIV conferences, and gray literature from relevant sources.Eligibility criteria included quantitative, qualitative or mixed-methods studies with primary data collection reporting a PrEP-related finding among WWID, and published in English or Spanish between 2012 and 2021. The initial search identified 2,809 citations, and 32 were included. Data on study characteristics and PrEP continuum of care were extracted, then data were analyzed in a narrative review. RESULTS Our search identified 2,809 studies; 32 met eligibility requirements. Overall, awareness, knowledge, and use of PrEP was low among WWID, although acceptability was high. Homelessness, sexual violence, unpredictability of drug use, and access to the healthcare system challenged PrEP usage and adherence. WWID were willing to share information on PrEP with other WWID, especially those at high-risk of HIV, such as sex workers. CONCLUSIONS To improve PrEP usage and engagement in care among WWID, PrEP services could be integrated within gender-responsive harm reduction and drug treatment services. Peer-based interventions can be used to improve awareness and knowledge of PrEP within this population. Further studies are needed on transgender WWID as well as PrEP retention and adherence among all WWID.
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Affiliation(s)
- Danielle Guy
- Barcelona Institute for Global Health (ISGlobal), Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Jason Doran
- Barcelona Institute for Global Health (ISGlobal), Hospital Clínic, University of Barcelona, Barcelona, Spain.,National Infection Service, UK Health Security Agency, London, United Kingdom.,London School of Hygiene and Tropical Medicine, University of London, London, United Kingdom
| | - Trenton M White
- Barcelona Institute for Global Health (ISGlobal), Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Lena van Selm
- Barcelona Institute for Global Health (ISGlobal), Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Teymur Noori
- European Centre for Disease Prevention and Control, Stockholm, Sweden
| | - Jeffrey V Lazarus
- Barcelona Institute for Global Health (ISGlobal), Hospital Clínic, University of Barcelona, Barcelona, Spain.,Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
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Glick JL, Russo R, Jivapong B, Rosman L, Pelaez D, Footer KHA, Sherman SG. The PrEP Care Continuum Among Cisgender Women Who Sell Sex and/or Use Drugs Globally: A Systematic Review. AIDS Behav 2020; 24:1312-1333. [PMID: 31807973 DOI: 10.1007/s10461-019-02733-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
HIV prevalence among cisgender female sex workers (FSW) and/or women who use drugs (WWUD) is substantially higher compared to similarly aged women. Consistent with PRISMA guidelines, we conducted the first systematic review on the pre-exposure prophylaxis (PrEP) continuum among FSW and/or WWUD, searching PubMed, Embase, CINAHL, PsycInfo, and Sociological Abstracts. Eligibility criteria included: reporting a PrEP related result among FSW and/or WWUD aged 18 + ; peer-reviewed; and published in English between 2012 and 2018. Our search identified 1365 studies; 26 met eligibility requirements, across the following groups: FSW (n = 14), WWUD (n = 9) and FSW-WWUD (n = 3). Studies report on at least one PrEP outcome: awareness (n = 12), acceptability (n = 16), uptake (n = 4), and adherence (n = 8). Specific barriers span individual and structural levels and include challenges to daily adherence, cost, and stigma. Combining health services and long-acting PrEP formulas may facilitate better PrEP uptake and adherence. The limited number of studies indicates a need for more research.
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