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Coyle CR, Desjardins MR, Curriero FC, Rudolph J, Astemborski J, Falade-Nwulia O, Kirk GD, Thomas DL, Mehta SH, Genberg BL. Geographic variation in HCV treatment penetration among people who inject drugs in Baltimore, MD. J Viral Hepat 2023; 30:810-818. [PMID: 37382024 PMCID: PMC10527489 DOI: 10.1111/jvh.13864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/06/2023] [Accepted: 06/09/2023] [Indexed: 06/30/2023]
Abstract
We evaluated geographic heterogeneity in hepatitis C virus (HCV) treatment penetration among people who inject drug (PWID) across Baltimore, MD since the advent of direct-acting antivirals (DAAs) using space-time clusters of HCV viraemia. Using data from a community-based cohort of PWID, the AIDS Linked to the IntraVenous Experience (ALIVE) study, we identified space-time clusters with higher-than-expected rates of HCV viraemia between 2015 and 2019 using scan statistics. We used Poisson regression to identify covariates associated with HCV viraemia and used the regression-fitted values to detect adjusted space-time clusters of HCV viraemia in Baltimore city. Overall, in the cohort, HCV viraemia fell from 77% in 2015 to 64%, 49%, 39% and 36% from 2016 to 2019. In Baltimore city, the percentage of census tracts where prevalence of HCV viraemia was ≥85% dropped from 57% to 34%, 25%, 22% and 10% from 2015 to 2019. We identified two clusters of higher-than-expected HCV viraemia in the unadjusted analysis that lasted from 2015 to 2017 in East and West Baltimore and one adjusted cluster of HCV viraemia in West Baltimore from 2015 to 2016. Neither differences in age, sex, race, HIV status, nor neighbourhood deprivation were able to explain the significant space-time clusters. However, residing in a cluster with higher-than-expected viraemia was associated with age, sex, educational attainment and higher levels of neighbourhood deprivation. Nearly 4 years after DAAs became available, HCV treatment has penetrated all PWID communities across Baltimore city. While nearly all census tracts experienced improvements, change was more gradual in areas with higher levels of poverty.
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Affiliation(s)
- Catelyn R. Coyle
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
- Merck & Co. Inc., Rahway, NJ
| | - Michael R. Desjardins
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
- Spatial Science for Public Health Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Frank C. Curriero
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
- Spatial Science for Public Health Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Jacqueline Rudolph
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Jacquie Astemborski
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Oluwaseun Falade-Nwulia
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Gregory D. Kirk
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - David L. Thomas
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Shruti H. Mehta
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Becky L. Genberg
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
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Grebely J, Robaeys G, Bruggmann P, Aghemo A, Backmund M, Bruneau J, Byrne J, Dalgard O, Feld JJ, Hellard M, Hickman M, Kautz A, Litwin A, Lloyd AR, Mauss S, Prins M, Swan T, Schaefer M, Taylor LE, Dore GJ. Recommandations pour la prise en charge de l'infection par le virus de l'hépatite C chez les usagers de drogues par injection. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2023; 111:101669. [PMID: 26847504 DOI: 10.1016/j.drugpo.2015.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
| | - Geert Robaeys
- Department of Gastroenterology and Hepatology, Ziekenhuis Oost Limburg, Genk, Belgium; Department of Hepatology, UZ Leuven, Leuven, Belgium; Faculty of Medicine and Life Sciences, Limburg Clinical Research Program, Hasselt University, Hasselt, Belgium
| | | | - Alessio Aghemo
- A.M. Migliavacca Center for Liver Disease, Division of Gastroenterology and Hepatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Milan, Italy
| | - Markus Backmund
- Ludwig-Maximilians-University, Munich, Germany; Praxiszentrum im Tal Munich, Munich, Germany
| | | | - Jude Byrne
- International Network of People who Use Drugs, Canberra, Australia
| | - Olav Dalgard
- Department of Infectious Diseases, Akershus University Hospital, Lørenskog, Norway
| | | | - Margaret Hellard
- Burnet Institute, Melbourne, Australia; Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Matthew Hickman
- School of Social & Community Medicine, University of Bristol, Bristol, United Kingdom
| | - Achim Kautz
- European Liver Patients Association, Cologne, Germany
| | - Alain Litwin
- Division of General Internal Medicine, Department of Medicine, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, United States
| | - Andrew R Lloyd
- Inflammation and Infection Research Centre, School of Medical Sciences, UNSW Australia, Sydney, Australia
| | - Stefan Mauss
- Center for HIV and Hepatogastroenterology, Düsseldorf, Germany
| | - Maria Prins
- Department of Research, Cluster Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, The Netherlands; Department of Internal Medicine, CINIMA, Academic Medical Centre, Amsterdam, The Netherlands
| | - Tracy Swan
- Treatment Action Group, New York, United States
| | - Martin Schaefer
- Department of Psychiatry, Psychotherapy and Addiction Medicine, Kliniken Essen-Mitte, Essen, Germany; Department of Psychiatry and Psychotherapy-CCM, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Lynn E Taylor
- Department of Medicine, Brown University, Providence, RI, United States
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Grebely J, Robaeys G, Bruggmann P, Aghemo A, Backmund M, Bruneau J, Byrne J, Dalgard O, Feld JJ, Hellard M, Hickman M, Kautz A, Litwin A, Lloyd AR, Mauss S, Prins M, Swan T, Schaefer M, Taylor LE, Dore GJ. Empfehlungen zur Hepatitis Versorgung bei Drogenkonsumierenden. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2023; 111:101670. [PMID: 26749563 DOI: 10.1016/j.drugpo.2015.11.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Geert Robaeys
- Department of Gastroenterology and Hepatology, Ziekenhuis Oost Limburg, Genk, Belgium; Department of Hepatology, UZ Leuven, Leuven, Belgium; Faculty of Medicine and Life Sciences, Limburg Clinical Research Program, Hasselt University, Hasselt, Belgium
| | | | - Alessio Aghemo
- A.M. Migliavacca Center for Liver Disease, Division of Gastroenterology and Hepatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Milan, Italy
| | - Markus Backmund
- Ludwig-Maximilians-University, Munich, Germany; Praxiszentrum im Tal Munich, Munich, Germany
| | | | - Jude Byrne
- International Network of People who Use Drugs, Canberra, Australia
| | - Olav Dalgard
- Department of Infectious Diseases, Akershus University Hospital, Lørenskog, Norway
| | | | - Margaret Hellard
- Burnet Institute, Melbourne, Australia; Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Matthew Hickman
- School of Social & Community Medicine, University of Bristol, Bristol, United Kingdom
| | - Achim Kautz
- European Liver Patients Association, Cologne, Germany
| | - Alain Litwin
- Division of General Internal Medicine, Department of Medicine, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, United States
| | - Andrew R Lloyd
- Inflammation and Infection Research Centre, School of Medical Sciences, UNSW Australia, Sydney, Australia
| | - Stefan Mauss
- Center for HIV and Hepatogastroenterology, Düsseldorf, Germany
| | - Maria Prins
- Department of Research, Cluster Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, The Netherlands; Department of Internal Medicine, CINIMA, Academic Medical Centre, Amsterdam, The Netherlands
| | - Tracy Swan
- Treatment Action Group, New York, United States
| | - Martin Schaefer
- Department of Psychiatry, Psychotherapy and Addiction Medicine, Kliniken Essen-Mitte, Essen, Germany; Department of Psychiatry and Psychotherapy-CCM, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Lynn E Taylor
- Department of Medicine, Brown University, Providence, RI, United States
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McInnes DK, Troszak LK, Fincke BG, Shwartz M, Midboe AM, Gifford AL, Dunlap S, Byrne T. Is the Availability of Direct-Acting Antivirals Associated with Increased Access to Hepatitis C Treatment for Homeless and Unstably Housed Veterans? J Gen Intern Med 2022; 37:1038-1044. [PMID: 34173193 PMCID: PMC8971232 DOI: 10.1007/s11606-021-06933-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 05/12/2021] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Hepatitis C virus (HCV) treatment has experienced a rapid transformation in the USA. New direct-acting antiviral (DAA) medications make treatment easier, less toxic, and more successful (90% or greater viral cure) than prior, interferon-based HCV medications. We sought to determine whether DAAs may have improved access to HCV treatment for hard-to-reach populations such as the homeless. METHODS In a retrospective study of VA electronic medical record data, a cohort was created of 63,586 veterans with a positive HCV RNA or genotype test taken at any point from January 1, 2012, through December 31, 2016. Patient data were examined for up to 5 years using a discrete time survival model to assess the relationship between their housing status and receipt of HCV medications in 6-month time periods in both the interferon and DAA eras. RESULTS In the interferon era, the probability of HCV treatment in a given 6-month window among housed veterans, at 6.2% (95% CI: 5.3-7.1%) was significantly higher than among veterans who were homeless or unstably housed; for example, among currently homeless veterans, the probability of treatment initiation, in a given 6-month window, was 2.6% (95% CI: 1.9-3.3%). With the arrival of DAAs, each housing category had an increased probability of treatment initiation. For housed veterans, the probability was 8.6% (95% CI: 8.3-8.9%) while for currently homeless veterans, it was 6.3% (95% CI: 5.7-6.9%). CONCLUSIONS We found a clear indication that the likelihood of treatment initiation was greater for all veterans in the DAA era as compared to the interferon era. However, disparities in treatment initiation rates between housed and homeless veterans that were observed in the interferon era persisted in the DAA era.
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Affiliation(s)
- D Keith McInnes
- Center for Healthcare Organization and Implementation Research, VA Bedford Healthcare System, Bedford, MA, USA. .,Department of Health Law, Policy, and Management, Boston University School of Public Health, MA, Boston, USA.
| | - Lara K Troszak
- Center for Innovation to Implementation (Ci2i), VA Palo Alto Health Care System, Menlo Park, CA, USA.,Stanford University School of Medicine, CA, Stanford, USA
| | - B Graeme Fincke
- Center for Healthcare Organization and Implementation Research, VA Bedford Healthcare System, Bedford, MA, USA.,Department of Health Law, Policy, and Management, Boston University School of Public Health, MA, Boston, USA
| | - Michael Shwartz
- Center for Healthcare Organization and Implementation Research, VA Boston Healthcare System, Boston, MA, USA
| | - Amanda M Midboe
- Center for Innovation to Implementation (Ci2i), VA Palo Alto Health Care System, Menlo Park, CA, USA.,Stanford University School of Medicine, CA, Stanford, USA
| | - Allen L Gifford
- Center for Healthcare Organization and Implementation Research, VA Boston Healthcare System, Boston, MA, USA.,Departments of Medicine, and Health Law, Policy, and Management, Boston University Schools of Medicine and Public Health, Boston, MA, USA
| | - Shawn Dunlap
- Center for Healthcare Organization and Implementation Research, VA Bedford Healthcare System, Bedford, MA, USA
| | - Thomas Byrne
- Center for Healthcare Organization and Implementation Research, VA Bedford Healthcare System, Bedford, MA, USA.,Boston University School of Social Work, Boston, MA, USA
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Kim KA, Choi GH, Jang ES, Kim YS, Lee YJ, Kim IH, Cho SB, Ki M, Choi HY, Paik D, Jeong SH. Epidemiology and treatment status of hepatitis C virus infection among people who have ever injected drugs in Korea: a prospective multicenter cohort study from 2007 to 2019 in comparison with non-PWID. Epidemiol Health 2021; 43:e2021077. [PMID: 34645207 PMCID: PMC8666681 DOI: 10.4178/epih.e2021077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 10/06/2021] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES Injection drug use is a major risk factor for hepatitis C virus (HCV) infection; however, limited data on this topic are available in Korea. Thus, this study aimed to investigate the epidemiological and clinical characteristics, treatment uptake, and outcomes of HCV infection among people who inject drugs (PWID). METHODS We used the data from the Korea HCV cohort, which prospectively enrolled patients with HCV infection between 2007 and 2019. Clinical data and results of a questionnaire survey on lifetime risk factors for HCV infection were analyzed according to a self-reported history of injection drug use (PWID vs. non-PWID group). RESULTS Among the 2,468 patients, 166 (6.7%) were in the PWID group, which contained younger patients (50.6±8.2 vs. 58.2±13.1 years) and a higher proportion of male (81.9 vs. 48.8%) than the non-PWID group. The distribution of PWID showed significant regional variations. Exposure to other risk factors for HCV infection was different between the groups. The proportion of patients with genotype non-2 infection was higher in the PWID group. Treatment uptake was higher in the PWID group in the interferon era; however, it was comparable between the groups in the direct-acting antiviral era. The rate of sustained virological response did not significantly differ between the groups. CONCLUSIONS As of 2019, PWID constituted a minority of HCV-infected people in Korea. The epidemiological characteristics, but not treatment uptake and outcomes, were different between the PWID and non-PWID groups. Therefore, active HCV screening and treatment should be offered to PWID in Korea.
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Affiliation(s)
- Kyung-Ah Kim
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Gwang Hyun Choi
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Eun Sun Jang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Young Seok Kim
- Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Youn Jae Lee
- Department of Internal Medicine, Inje University Busan Paik Hospital, Busan, Korea
| | - In Hee Kim
- Department of Internal Medicine, Jeonbuk National University Hospital, Jeonju, Korea
| | - Sung Bum Cho
- Department of Internal Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Moran Ki
- Department of Cancer Control and Policy, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Hwa Young Choi
- Department of Cancer Control and Policy, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Dahye Paik
- Department of Cancer Control and Policy, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Sook-Hyang Jeong
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
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6
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Grebely J, Collins AB, Artenie AA, Sutherland R, Meyer JP, Barocas JA, Falade-Nwulia O, Cepeda JA, Cunningham EB, Hajarizadeh B, Lafferty L, Lazarus JV, Bonn M, Marshall AD, Treloar C. Progress and remaining challenges to address hepatitis C, other infectious diseases, and drug-related harms to improve the health of people who use drugs. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2021; 96:103469. [PMID: 34610884 DOI: 10.1016/j.drugpo.2021.103469] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 12/31/2022]
Affiliation(s)
- Jason Grebely
- The Kirby Institute, UNSW Sydney, Sydney, Australia.
| | | | | | - Rachel Sutherland
- National Drug and Alcohol Research Centre, UNSW Sydney, Sydney, Australia
| | - Jaimie P Meyer
- AIDS Program, Yale School of Medicine, New Haven, United States; Chronic Disease Epidemiology, Yale School of Public Health, New Haven, United States
| | - Joshua A Barocas
- Divisions of General Internal Medicine and Infectious Diseases, University of Colorado School of Medicine, Aurora, United States
| | - Oluwaseun Falade-Nwulia
- Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, United States
| | - Javier A Cepeda
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health,Baltimore, United States
| | | | | | - Lise Lafferty
- The Kirby Institute, UNSW Sydney, Sydney, Australia; Centre for Social Research in Health, UNSW Sydney, Sydney, Australia
| | - Jeffrey V Lazarus
- Barcelona Institute for Global Health (ISGlobal), Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Matthew Bonn
- Canadian Association of People Who Use Drugs, Dartmouth, Canada
| | - Alison D Marshall
- The Kirby Institute, UNSW Sydney, Sydney, Australia; Centre for Social Research in Health, UNSW Sydney, Sydney, Australia
| | - Carla Treloar
- Centre for Social Research in Health, UNSW Sydney, Sydney, Australia
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7
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Llamosas-Falcón L, Shield KD, Gelovany M, Hasan OSM, Manthey J, Monteiro M, Walsh N, Rehm J. Impact of alcohol on the progression of HCV-related liver disease: A systematic review and meta-analysis. J Hepatol 2021; 75:536-546. [PMID: 33892007 DOI: 10.1016/j.jhep.2021.04.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 04/02/2021] [Accepted: 04/08/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS Despite a marked reduction in new cases of cirrhosis caused by HCV infection, over 500,000 new cirrhosis cases in this category were estimated globally in 2019. This contribution quantifies the relationship between alcohol use and the progression of liver disease in people with HCV infections. METHODS The causal impact of different levels of alcohol use on cirrhosis has previously been established. The quantification of this relationship was undertaken based on a systematic search of the literature and a meta-analysis. We limited our search to longitudinal and case-control studies with biologically verified outcomes. Different sensitivity analyses were conducted to check on key assumptions and on the generalizability of the relationship. RESULTS Alcohol use has a dose-dependent relationship with incident cirrhosis, which is linear on the log-linear level, and thus exponential on the level of odds ratios or other risk indicators. Each standard drink of 12 grams of pure alcohol per day increases the risk by about 11%. The results were stable regardless of the statistical model used, level of adjustment, quality of the study, or outcome (i.e., cirrhosis, decompensated cirrhosis, liver-related death). CONCLUSIONS Alcohol use has a marked impact on the progression of HCV infections to cirrhosis and more severe liver outcomes. LAY SUMMARY Alcohol consumption has a significant impact on the progression of liver disease in people with HCV infections. Each alcoholic drink per day is associated with an increase in the risk of cirrhosis of 11%.
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Affiliation(s)
- Laura Llamosas-Falcón
- Preventive Medicine and Public Health, Hospital Universitario 12 de Octubre, Avda de Córdoba s/n, 28041 - Madrid, Spain; Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell Street, Toronto, Ontario, Canada, M5S 2S1
| | - Kevin D Shield
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell Street, Toronto, Ontario, Canada, M5S 2S1; Dalla Lana School of Public Health, University of Toronto, 155 College Street, Toronto, ON, M5T 1P8, Canada; World Health Organization / Pan American Health Organization Collaborating Centre, Centre for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, Ontario, Canada, M5S 2S1
| | - Maya Gelovany
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell Street, Toronto, Ontario, Canada, M5S 2S1
| | - Omer S M Hasan
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell Street, Toronto, Ontario, Canada, M5S 2S1; Dalla Lana School of Public Health, University of Toronto, 155 College Street, Toronto, ON, M5T 1P8, Canada
| | - Jakob Manthey
- Center for Interdisciplinary Addiction Research (ZIS), Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246 Hamburg, Germany; Institute of Clinical Psychology and Psychotherapy & Center of Clinical Epidemiology and Longitudinal Studies (CELOS), Technische Universität Dresden, Chemnitzer Str. 46, 01187 Dresden, Germany; Department of Psychiatry, Medical Faculty, University of Leipzig, Semmelweisstraße 10, 04103 Leipzig, Germany
| | - Maristela Monteiro
- Pan American Health Organization/ WHO Regional Office for the Americas, 525 23rd St, Washington DC 20037, USA
| | - Nick Walsh
- Pan American Health Organization/ WHO Regional Office for the Americas, 525 23rd St, Washington DC 20037, USA
| | - Jürgen Rehm
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell Street, Toronto, Ontario, Canada, M5S 2S1; Dalla Lana School of Public Health, University of Toronto, 155 College Street, Toronto, ON, M5T 1P8, Canada; World Health Organization / Pan American Health Organization Collaborating Centre, Centre for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, Ontario, Canada, M5S 2S1; Center for Interdisciplinary Addiction Research (ZIS), Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246 Hamburg, Germany; Institute of Clinical Psychology and Psychotherapy & Center of Clinical Epidemiology and Longitudinal Studies (CELOS), Technische Universität Dresden, Chemnitzer Str. 46, 01187 Dresden, Germany; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 33 Russell Street, Toronto, Ontario, Canada, M5T 2S1; Faculty of Medicine, Institute of Medical Science, University of Toronto, Medical Sciences Building, 1 King's College Circle, Room 2374, Toronto, Ontario, Canada, M5S 1A8; Department of Psychiatry, University of Toronto, 250 College Street, 8th Floor, Toronto, Ontario, Canada, M5T 1R8; Department of International Health Projects, Institute for Leadership and Health Management, I.M. Sechenov First Moscow State Medical University, Trubetskaya str., 8, b. 2, 119992, Moscow, Russian Federation.
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8
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Cadri A, Nagumsi BAA, Twi-Yeboah A, Yeboah LD, Adomah-Afari A, Ane-Loglo MG, Aboagye RG. Facilitators and Barriers to Health Seeking among People Who Use Drugs in the Sunyani Municipality of Ghana: An Exploratory Study. BIOMED RESEARCH INTERNATIONAL 2021; 2021:2868953. [PMID: 34471636 PMCID: PMC8405291 DOI: 10.1155/2021/2868953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 08/12/2021] [Indexed: 11/23/2022]
Abstract
Drug use is one of the global public health issues, and its accompanying disorders have consequences on people's mental, physical, and environmental health. Nevertheless, the majority of people who use drugs have never been treated for drug dependence and other health conditions whilst others discontinue their treatment for drug use disorder. Using the health belief model, the study aimed at exploring facilitators and barriers to health-seeking among people who use drugs in the Sunyani Municipality of Ghana. A descriptive study design was used, employing a qualitative approach. In-depth interviews were conducted with a total of 22 participants, including two key informants (male and female). The first group of participants was recruited from the ghetto (an area in the municipality where people who use drugs are usually located). The other group of participants was recruited using hospital-based records. The interview data were transcribed, coded, and analysed for the generation of themes with the aid of Nvivo version 12 pro. The results showed that people who use drugs face health challenges such as drug dependence, malaria, lungs and breathing complications, cardiovascular complications, and skin complications. People who use drugs experienced poor perceived quality of life and low health status. Health-seeking behaviours of interviewees were influenced by the perceived benefit, perceived severity, cues to action, among others. Multiple sources of healthcare were used by the people who use drugs. Whereas ease of communication, perceived severity, benefit, among others were facilitators to their health-seeking behaviours, cost, dwindling social support, lack of knowledge of the condition, and fear of arrest by law enforcement agencies also served as barriers to seeking healthcare at the orthodox health facilities. This paper suggests a holistic approach to help improve the health and health-seeking behaviours of people who use drugs. The researchers wish to indicate that an earlier version of this manuscript has been presented at the University of Ghana as a thesis.
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Affiliation(s)
- Abdul Cadri
- Department of Social and Behavioural Science, School of Public Health, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - Bonyo Abdul Aziz Nagumsi
- Department of Health Policy, Planning and Management, School of Public Health, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - Alberta Twi-Yeboah
- Department of Social and Behavioural Science, School of Public Health, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - Linda Darko Yeboah
- Department of Social and Behavioural Science, School of Public Health, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - Augustine Adomah-Afari
- Department of Health Policy, Planning and Management, School of Public Health, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - Maria Goretti Ane-Loglo
- School of Law, University of Ghana, Legon, Ghana
- West Africa Drug Policy Network, East Legon, Accra, Ghana
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9
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Achieving Hepatitis C Elimination By Using Person-Centered, Nurse-Led Models of Care: A Discussion of Four International Case Studies. Gastroenterol Nurs 2021; 43:303-309. [PMID: 32665524 DOI: 10.1097/sga.0000000000000458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Nurse-led models of care are an important strategy in the management of patients with chronic disease because of the person-centered approach that allows the needs of the individual to be prioritized and addressed in accessible settings. Hepatitis C is caused by a blood-borne virus that can cause liver disease and liver cancer; it predominantly affects marginalized populations, including people who inject drugs. Since 2013, all oral, direct-acting antiviral regimens have been available to cure hepatitis C. Nurses are well placed to be involved in the delivery of hepatitis C testing and treatment because of their extensive reach within marginalized communities and holistic approach to patient care. Four case studies of nurse-led models of care operating in Australia, Canada, the United Kingdom, and the United States are presented to illustrate the important role nurses have in delivering accessible, person-centered hepatitis C testing and treatment. Each case study demonstrates the success of overcoming barriers to hepatitis C testing and treatment such as geographic isolation, incarceration, social marginalization, and inflexible healthcare systems. Achieving the global target to eliminate hepatitis C by 2030 will require the nursing profession to embrace its role as the first point of contact to the healthcare system for many members of marginalized communities potentially at risk of hepatitis C. Nurses are well placed to reduce barriers and facilitate access to healthcare by scaling up activities focused on hepatitis C testing and treatment.
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10
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Metsch LR, Feaster DJ, Gooden LK, Masson C, Perlman DC, Jain MK, Matheson T, Nelson CM, Jacobs P, Tross S, Haynes L, Lucas GM, Colasanti JA, Rodriguez A, Drainoni ML, Osorio G, Nijhawan AE, Jacobson JM, Sullivan M, Metzger D, Vergara-Rodriguez P, Lubelchek R, Duan R, Batycki JN, Matthews AG, Munoz F, Jelstrom E, Mandler R, Del Rio C. Care Facilitation Advances Movement Along the Hepatitis C Care Continuum for Persons With Human Immunodeficiency Virus, Hepatitis C, and Substance Use: A Randomized Clinical Trial (CTN-0064). Open Forum Infect Dis 2021; 8:ofab334. [PMID: 34377726 PMCID: PMC8339611 DOI: 10.1093/ofid/ofab334] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 06/24/2021] [Indexed: 12/13/2022] Open
Abstract
Background Direct-acting antivirals can cure hepatitis C virus (HCV). Persons with HCV/HIV and living with substance use are disadvantaged in benefiting from advances in HCV treatment. Methods In this randomized controlled trial, participants with HCV/HIV were randomized between February 2016 and January 2017 to either care facilitation or control. Twelve-month follow-up assessments were completed in January 2018. Care facilitation group participants received motivation and strengths-based case management addressing retrieval of HCV viral load results, engagement in HCV/HIV care, and medication adherence. Control group participants received referral to HCV evaluation and an offer of assistance in making care appointments. Primary outcome was number of steps achieved along a series of 8 clinical steps (eg, receiving HCV results, initiating treatment, sustained virologic response [SVR]) of the HCV/HIV care continuum over 12 months postrandomization. Results Three hundred eighty-one individuals were screened and 113 randomized. Median age was 51 years; 58.4% of participants were male and 72.6% were Black/African American. Median HIV-1 viral load was 27 209 copies/mL, with 69% having a detectable viral load. Mean number of steps completed was statistically significantly higher in the intervention group vs controls (2.44 vs 1.68 steps; χ 2 [1] = 7.36, P = .0067). Men in the intervention group completed a statistically significantly higher number of steps than controls. Eleven participants achieved SVR with no difference by treatment group. Conclusions The care facilitation intervention increased progress along the HCV/HIV care continuum, as observed for men and not women. Study findings also highlight continued challenges to achieve individual-patient SVR and population-level HCV elimination. Clinical Trials Registration NCT02641158.
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Affiliation(s)
- Lisa R Metsch
- Department of Sociomedical Sciences, Columbia University, New York, New York, USA
| | - Daniel J Feaster
- Department of Public Health Sciences, University of Miami, Miami, Florida, USA
| | - Lauren K Gooden
- Department of Sociomedical Sciences, Columbia University, New York, New York, USA
| | - Carmen Masson
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, San Francisco, California, USA
| | - David C Perlman
- Division of Infectious Diseases, Mount Sinai Health System, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Mamta K Jain
- Division of Infectious Diseases, University of Texas Southwestern Medical Center and Parkland Health & Hospital System, Dallas, Texas, USA
| | - Tim Matheson
- Center on Substance Use and Health, San Francisco Department of Public Health, San Francisco, California, USA
| | - C Mindy Nelson
- Department of Public Health Sciences, University of Miami, Miami, Florida, USA
| | - Petra Jacobs
- Center for Clinical Trials Network, National Institute on Drug Abuse, Rockville, Maryland, USA
| | - Susan Tross
- Department of Psychiatry, Columbia University, New York, New York, USA
| | - Louise Haynes
- College of Medicine, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Gregory M Lucas
- Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Allan Rodriguez
- Infectious Disease, University of Miami, Miami, Florida, USA
| | - Mari-Lynn Drainoni
- Section of Infectious Diseases, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Georgina Osorio
- Division of Infectious Diseases, Mount Sinai Health System, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Ank E Nijhawan
- Division of Infectious Diseases, University of Texas Southwestern Medical Center and Parkland Health & Hospital System, Dallas, Texas, USA
| | - Jeffrey M Jacobson
- Division of Infectious Diseases and HIV Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Meg Sullivan
- Section of Infectious Diseases, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - David Metzger
- HIV/AIDS Prevention Research Division, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Pamela Vergara-Rodriguez
- Mental Health and Substance Abuse Division, John H. Stroger, Jr Hospital of Cook County, Chicago, Illinois, USA
| | - Ronald Lubelchek
- Infectious Diseases, John H. Stroger, Jr Hospital of Cook County, Chicago, Illinois, USA
| | - Rui Duan
- Department of Public Health Sciences, University of Miami, Miami, Florida, USA
| | - Jacob N Batycki
- Department of Public Health Sciences, University of Miami, Miami, Florida, USA
| | - Abigail G Matthews
- Data Statistical Center, The Emmes Company, LLC, Rockville, Maryland, USA
| | - Felipe Munoz
- Data Statistical Center, The Emmes Company, LLC, Rockville, Maryland, USA
| | - Eve Jelstrom
- Clinical Coordinating Center, The Emmes Company, LLC, Rockville, Maryland, USA
| | - Raul Mandler
- Clinical/Medical Branch, National Institute on Drug Abuse, Rockville, Maryland, USA
| | - Carlos Del Rio
- Division of Infectious Diseases, Emory University, Atlanta, Georgia, USA
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11
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High prevalence of unawareness of HCV infection status among both HCV-seronegative and seropositive people living with human immunodeficiency virus in Taiwan. PLoS One 2021; 16:e0251158. [PMID: 33956867 PMCID: PMC8101914 DOI: 10.1371/journal.pone.0251158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 04/20/2021] [Indexed: 12/30/2022] Open
Abstract
Objectives HCV infection status awareness is crucial in the HCV care continuum for both HCV-seropositive (HCV-positive status awareness) and seronegative (HCV-negative status awareness) populations. However, trends in the unawareness of HCV infection status (UoHCV) remain unknown in HIV-positive patients. This study investigated UoHCV prevalence, the associated factors of UoHCV, and its association with HCV-related knowledge in HIV-positive patients. Methods For this cross-sectional, multicenter, questionnaire-based study, 844 HIV-infected participants were recruited from three hospitals in Taiwan from June 2018 to March 2020. Participants were grouped by HCV serostatus (HCV-seronegative [n = 734] and HCV-seropositive [n = 110]) and categorized by their HIV diagnosis date (before 2008, 2008–2013, and 2014–2020). Exploratory factor analysis was used to categorize the 15 items of HCV-related knowledge into three domains: route of HCV transmission, HCV course and complications, and HCV treatment. Results The prevalence of UoHCV was 58.7%–62.6% and 15.1%–31.3% in the HCV-seronegative and HCV-seropositive groups, respectively, across 3 periods. More participants with UoHCV believed that HCV infection was only contracted by intravenous injection. In the HCV-seropositive group, participants with UoHCV were more likely to have HIV diagnosis before 2008 (vs. 2014–2020), be men who have sex with men (vs. people who inject drugs), and have hepatitis A virus seronegativity. In the HCV-seronegative group, participants with UoHCV were more likely to have a recent history of sexually transmitted diseases, but had a lower education level, had received less information on HCV infection from clinicians, and were less likely to have heard of HCV infection prior to the research. UoHCV was associated with lower scores for three domains of HCV-related knowledge in both groups. Conclusions The negative association of UoHCV with HCV-related knowledge suggests that strategies targeting patients according to their HCV serostatus should be implemented to reduce UoHCV and eradicate HCV infection among HIV-positive patients.
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12
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Predictors of progression through the cascade of care to a cure for hepatitis C patients using decision trees and random forests. Comput Biol Med 2021; 134:104461. [PMID: 33975209 DOI: 10.1016/j.compbiomed.2021.104461] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/23/2021] [Accepted: 04/28/2021] [Indexed: 01/15/2023]
Abstract
BACKGROUND This study uses machine learning techniques to identify sociodemographic and clinical predictors of progression through the hepatitis C (HCV) cascade of care for patients in the 1945-1965 birth cohort in the Southern United States. METHODS We compared sociodemographic and clinical variables between groups of patients for three care outcomes: linkage to care, initiation of antiviral treatment, and virologic cure. A decision tree model and random forest model were built for each outcome. RESULTS Patients were primarily male, African American/Black or Caucasian/White, non-Hispanic or Latino, and insured. The average age at first HCV screening was 60 years old, and common medical diagnoses included chronic kidney disease, fibrosis and/or cirrhosis, transplanted liver, diabetes mellitus, and liver cell carcinoma. Variables used in predicting linkage to care included age at first HCV screening, insurance at first HCV screening, race, fibrosis and/or cirrhosis, other liver disease, ascites, and transplanted liver. Variables used in predicting initiation of antiviral treatment included insurance at first HCV screening, gender, other liver cancer, steatosis, and liver cell carcinoma. Variables used in predicting virologic cure included insurance at first HCV screening, transplanted liver, and ethnicity. CONCLUSION These patients have a high hepatic health burden, likely reflecting complications of untreated HCV and highlighting the urgency to cure HCV in this birth cohort. We found differences in HCV care outcomes based on sociodemographic and clinical variables. More work is needed to understand the mechanisms of these differences in care outcomes and to improve HCV care.
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13
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Graf C, Mücke MM, Dultz G, Peiffer KH, Kubesch A, Ingiliz P, Zeuzem S, Herrmann E, Vermehren J. Efficacy of Direct-acting Antivirals for Chronic Hepatitis C Virus Infection in People Who Inject Drugs or Receive Opioid Substitution Therapy: A Systematic Review and Meta-analysis. Clin Infect Dis 2021; 70:2355-2365. [PMID: 31513710 DOI: 10.1093/cid/ciz696] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 07/23/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Treatment uptake for hepatitis C virus (HCV) infection in people who inject drugs (PWID) and patients on opioid substitution therapy (OST) is still low despite treatment guidelines that advocate the use of direct-acting antivirals (DAAs) in all patients. Our aim in this review was to investigate treatment outcomes among PWID and patients on OST in comparison to control cohorts. METHODS A search of Embase, Medline, PubMed, and Web of Science (from October 2010 to March 2018) was conducted to assess sustained virologic response (SVR), discontinuation rates, adherence, and HCV reinfection in PWID and patients on OST. RESULTS We identified 11 primary articles and 12 conference abstracts comprising 1702 patients on OST, 538 PWID, and 19 723 patients who served as controls. Among patients on OST, the pooled SVR was 90% (95% confidence interval [CI], 87% to 93%) and pooled treatment discontinuation rate was 7% (95% CI, 4% to 11%). Similarly, the pooled SVR was 88% (95% CI, 80% to 93%) in PWID and the pooled treatment discontinuation rate was 9% (95% CI, 5% to 15%). There was no significant difference regarding pooled rates of SVR, adherence, and discontinuation between patients on OST and controls as well as between PWID and controls. HCV reinfection rates among patients on OST ranged from 0.0 to 12.5 per 100 person-years. CONCLUSIONS HCV treatment outcomes in PWID and patients on OST are similar to those in patients without a history of injecting drugs, supporting current guideline recommendations to treat HCV in these patient populations.
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Affiliation(s)
- Christiana Graf
- Department of Internal Medicine, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Marcus M Mücke
- Department of Internal Medicine, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Georg Dultz
- Department of Internal Medicine, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Kai-Henrik Peiffer
- Department of Internal Medicine, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Alica Kubesch
- Department of Internal Medicine, University Hospital Frankfurt, Frankfurt am Main, Germany
| | | | - Stefan Zeuzem
- Department of Internal Medicine, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Eva Herrmann
- Institute of Biostatistics and Mathematical Modeling, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Johannes Vermehren
- Department of Internal Medicine, University Hospital Frankfurt, Frankfurt am Main, Germany
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14
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Tofighi B, Lee JD, Sindhu SS, Chemi C, Leonard NR. Engagement in the Hepatitis C care continuum among people who use drugs. JOURNAL OF SUBSTANCE USE 2020; 25:343-349. [PMID: 33041652 DOI: 10.1080/14659891.2019.1704076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Despite high rates of Hepatitis C virus (HCV) infection among people who use drugs (PWUDs), access to the HCV care continuum combined with the receipt of medications for addiction treatment in primary care settings remains suboptimal. A qualitative study was conducted among adults admitted for inpatient detoxification for opioid use disorder (OUD) in New York City (n=23) to assess barriers and facilitators with HCV prevention, screening, treatment, interactions with primary care providers, and experiences with integrated care approaches. Study findings yielded six major themes related to HCV care. Major gaps persist in knowledge regarding HCV harm reduction strategies, voluntary HCV testing services, and eligibility for HCV treatment. Treatment coordination challenges reinforce the importance of enhancing linkages to HCV care in key access-points utilized by PWUDs (e.g., emergency rooms, specialty addiction treatment settings). Peer networks combined with frequent patient-physician communication were elicited as important factors in facilitating linkage to HCV care. Additional care coordination needs in primary care settings included access to integrated treatment of HCV and OUD, and administrative support for enrollment in Medicaid, subsidized housing, and access to transportation vouchers.
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Affiliation(s)
- Babak Tofighi
- New York University School of Medicine, Department of Population Health.,New York University School of Medicine, Division of General Internal Medicine.,Center for Drug Use and HIV Research, NYU College of Global Public Health
| | - Joshua D Lee
- New York University School of Medicine, Department of Population Health.,New York University School of Medicine, Division of General Internal Medicine.,Center for Drug Use and HIV Research, NYU College of Global Public Health
| | - Selena S Sindhu
- New York University School of Medicine, Department of Population Health
| | - Chemi Chemi
- New York University School of Medicine, Department of Population Health
| | - Noelle R Leonard
- Center for Drug Use and HIV Research, NYU College of Global Public Health.,NYU Silver School of Social Work
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15
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Falade-Nwulia O, Gicquelais RE, Astemborski J, McCormick SD, Kirk G, Sulkowski M, Thomas DL, Mehta SH. Hepatitis C treatment uptake among people who inject drugs in the oral direct-acting antiviral era. Liver Int 2020; 40:2407-2416. [PMID: 32770638 PMCID: PMC7706292 DOI: 10.1111/liv.14634] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 06/22/2020] [Accepted: 07/20/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Increased uptake of hepatitis C virus (HCV) treatment among people who inject drugs (PWID) will be critical to achieve HCV elimination goals. There are limited data on HCV treatment uptake among PWID recruited from community-based settings in the HCV direct-acting antiviral (DAA) era. METHODS We analysed data from PWID with HCV newly recruited into the Baltimore, Maryland-based AIDS Linked to the IntraVenous Experience (ALIVE) cohort between 2015 and 2018. We characterized the HCV care continuum and evaluated factors associated with HCV treatment uptake. RESULTS Of the 418 PWID with HCV, the median age was 49 years and most (88%) reported recent injection drug use (IDU). Overall, 23% had ever been evaluated by a provider for HCV treatment, 17% ever initiated DAA treatment and 13% were cured of HCV infection. Treatment uptake approximately doubled between 2015 and 2018 (13% to 26%, P = .01). In multivariable analyses, HIV infection (adjusted Odds Ratio [aOR] 2.5 [95% Confidence Interval (CI) 1.3, 4.8]), current employment (aOR 4.1 [CI 1.2, 14.4]), having a primary care provider (aOR 4.3 [CI 1.2, 14.9) and longer duration of IDU (aOR 1.3 [CI 1.1, 1.6]) were positively associated with HCV treatment. PWID with a lower annual income (≤$5000) were less likely to have initiated HCV treatment (aOR 0.5 [CI 0.3, 0.98]). CONCLUSIONS Although HCV treatment uptake among PWID in this community-based setting in the DAA era remains suboptimal, it is encouraging that treatment uptake has increased in recent years. Innovative strategies are needed to reach all PWID infected with HCV.
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Affiliation(s)
| | - Rachel E. Gicquelais
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Jacquie Astemborski
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Sean D. McCormick
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Greg Kirk
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Mark Sulkowski
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - David L. Thomas
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Shruti H. Mehta
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
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16
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Clementi E, Bartlett S, Otterstatter M, Buxton JA, Wong S, Yu A, Butt ZA, Wilton J, Pearce M, Jeong D, Binka M, Adu P, Alvarez M, Samji H, Abdia Y, Wong J, Krajden M, Janjua NZ. Syndemic profiles of people living with hepatitis C virus using population-level latent class analysis to optimize health services. Int J Infect Dis 2020; 100:27-33. [PMID: 32810594 DOI: 10.1016/j.ijid.2020.08.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 08/09/2020] [Accepted: 08/11/2020] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Hepatitis C (HCV) affects diverse populations such as people who inject drugs (PWID), 'baby boomers,' gay/bisexual men who have sex with men (gbMSM), and people from HCV endemic regions. Assessing HCV syndemics (i.e.relationships with mental health/chronic diseases) among subpopulations using Latent Class Analysis (LCA) may facilitate targeted program planning. METHODS The BC Hepatitis Testers Cohort(BC-HTC) includes all HCV cases identified in BC between 1990 and 2015, integrated with medical administrative data. LCA grouped all BC-HTC HCV diagnosed people(n = 73,665) by socio-demographic/clinical indicators previously determined to be relevant for HCV outcomes. The final model was chosen based on fit statistics, epidemiological meaningfulness, and posterior probability. Classes were named by most defining characteristics. RESULTS The six-class model was the best fit and had the following names and characteristics: 'Younger PWID'(n =11,563): recent IDU (67%), people born >1974 (48%), mental illness (62%), material deprivation (59%). 'Older PWID'(n =15,266): past IDU (78%), HIV (17%), HBV (17%) coinfections, alcohol misuse(68%). 'Other Middle-Aged People'(n = 9019): gbMSM (26%), material privilege (31%), people born between 1965-1974 (47%). 'People of Asian backgrounds' (n = 4718): East/South Asians (92%), no alcohol misuse (97%) or mental illness (93%), people born <1945 (26%), social privilege (66%). 'Rural baby boomers' (n = 20,401): rural dwellers (32%), baby boomers (79%), heterosexuals (99%), no HIV (100%). 'Urban socially deprived baby boomers' (n = 12,698): urban dwellers (99%), no IDU (100%), liver disease (22%), social deprivation (94%). CONCLUSIONS Differences between classes suggest variability in patients' service needs. Further analysis of health service utilization patterns may inform optimal service layout.
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Affiliation(s)
- Emilia Clementi
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; BC Centre for Disease Control, Vancouver, BC, Canada
| | - Sofia Bartlett
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; BC Centre for Disease Control, Vancouver, BC, Canada; University of New South Wales, Sydney, New South Wales, Australia
| | - Michael Otterstatter
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; BC Centre for Disease Control, Vancouver, BC, Canada
| | - Jane A Buxton
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; BC Centre for Disease Control, Vancouver, BC, Canada
| | - Stanley Wong
- BC Centre for Disease Control, Vancouver, BC, Canada
| | - Amanda Yu
- BC Centre for Disease Control, Vancouver, BC, Canada
| | - Zahid A Butt
- BC Centre for Disease Control, Vancouver, BC, Canada; University of Waterloo Faculty of Applied Health Sciences, Waterloo, ON, Canada
| | - James Wilton
- BC Centre for Disease Control, Vancouver, BC, Canada
| | - Margo Pearce
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; BC Centre for Disease Control, Vancouver, BC, Canada
| | - Dahn Jeong
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; BC Centre for Disease Control, Vancouver, BC, Canada
| | - Mawuena Binka
- BC Centre for Disease Control, Vancouver, BC, Canada
| | - Prince Adu
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; BC Centre for Disease Control, Vancouver, BC, Canada
| | - Maria Alvarez
- BC Centre for Disease Control, Vancouver, BC, Canada
| | - Hasina Samji
- BC Centre for Disease Control, Vancouver, BC, Canada; Faculty of Health Sciences, Simon Fraser University, Burnaby, BC, Canada
| | - Younathan Abdia
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; BC Centre for Disease Control, Vancouver, BC, Canada
| | - Jason Wong
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; BC Centre for Disease Control, Vancouver, BC, Canada
| | - Mel Krajden
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Naveed Z Janjua
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada; BC Centre for Disease Control, Vancouver, BC, Canada; Centre for Health Evaluation and Outcome Sciences, Vancouver, BC, Canada.
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17
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Reader SW, Kim HS, El-Serag HB, Thrift AP. Persistent Challenges in the Hepatitis C Virus Care Continuum for Patients in a Central Texas Public Health System. Open Forum Infect Dis 2020; 7:ofaa322. [PMID: 32875004 PMCID: PMC7452366 DOI: 10.1093/ofid/ofaa322] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 07/28/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Direct-acting antiviral treatment regimens cure >95% of chronic hepatitis C virus (HCV) infections, but recent studies indicate that <25% of patients in the United States receive treatment. Patients need to overcome barriers on the steps of the care continuum in order to be prescribed treatment. We aimed to examine the steps of the HCV care continuum up to prescription of HCV therapy among patients receiving care within a large safety net health care system in Houston, Texas. METHODS We used electronic medical records to identify patients with positive screening tests for HCV antibodies between July 1, 2017, and June 30, 2018, and abstracted data on their advancement through the care continuum for HCV. We used logistic regression to identify factors associated with patient navigation through the continuum. RESULTS Of the 2450 patients screening positive for HCV antibodies, 2016 (82.3%) received quantitative RNA testing, of whom 1081 (53.6%) exhibited chronic infection. Providers referred 915 (84.6%) to specialty care for evaluation, 540 of these patients (50.0%) received their specialist evaluation, and 299 (27.7%) received a prescription for treatment. Patients with history of substance use were less likely to be prescribed treatment (adjusted odds ratio, 0.66; 95% CI, 0.49-0.88). CONCLUSIONS We found substantial attrition at each stage of the HCV care continuum. In particular, history of substance abuse was a predictor of nonprescription. Challenges in the care continuum motivate increased provider education as well as the adoption of recent innovations in patient care.
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Affiliation(s)
- Shane W Reader
- Section of Epidemiology & Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Hyun-seok Kim
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Hashem B El-Serag
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Aaron P Thrift
- Section of Epidemiology & Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
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18
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Kelty E, Hulse G, Joyce D, Preen DB. Impact of Pharmacological Treatments for Opioid Use Disorder on Mortality. CNS Drugs 2020; 34:629-642. [PMID: 32215842 DOI: 10.1007/s40263-020-00719-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The use of pharmacological treatments for opioid use disorders, including methadone, buprenorphine and naltrexone has been associated with a reduction in mortality compared with illicit opioid use. However, these treatments can also contribute significantly to the risk of death. The opioid agonists methadone and buprenorphine achieve clinical efficacy in patients with an opioid use disorder through suppressing craving and diminishing the effectiveness of illicit opioid doses, while the antagonist naltrexone blocks the action of opioids. Pharmacological differences between opioid pharmacotherapies then create different temporal patterns of protection and mortality risk, different risks of relapse to illicit opioid use, and variations in direct and indirect toxicity, which are revealed in clinical and epidemiological studies. Induction onto methadone and the cessation of oral naltrexone treatment are associated with an elevated risk of opioid poisoning, which is not apparent in patients treated with buprenorphine or sustained-release naltrexone. Beyond drug-related mortality, these pharmacotherapies can impact a participant's risk of death. Buprenorphine may also have some advantages over methadone in patients with depressive disorders or cardiovascular abnormalities. Naltrexone, which is also commonly prescribed to manage problem alcohol use, may reduce deaths in chronic co-alcohol users. Understanding these pharmacologically driven patterns then guides the judicious choice of drug and dosing schedule and the proactive risk management that is crucial to minimising the risk of death in treatment.
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Affiliation(s)
- Erin Kelty
- School of Population and Global Health, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, WA, 6009, Australia.
| | - Gary Hulse
- Division of Psychiatry, Medical School, The University of Western Australia, Perth, WA, Australia.,Medical and Health Sciences, Edith Cowan University, Perth, WA, Australia
| | - David Joyce
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
| | - David B Preen
- School of Population and Global Health, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, WA, 6009, Australia
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19
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Kåberg M, Larsson SB, Jerkeman A, Nystedt A, Duberg AS, Kövamees J, Ydreborg M, Aleman S, Büsch K, Alanko Blomé M, Weiland O, Söderholm J. High risk of non-alcoholic liver disease mortality in patients with chronic hepatitis C with illicit substance use disorder. Scand J Gastroenterol 2020; 55:574-580. [PMID: 32356496 DOI: 10.1080/00365521.2020.1754456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Aims: Hepatitis C virus (HCV) is a slowly progressive disease, often transmitted among people who inject drugs (PWID). Mortality in PWID is high, with an overrepresentation of drug-related causes. This study investigated the risk of death in patients with chronic hepatitis C virus (HCV) infection with or without illicit substance use disorder (ISUD).Methods: Patients with HCV were identified using the Swedish National Patient Registry according to the International Classification of Diseases-10 (ICD-10) code B18.2, with ≤5 matched comparators from the general population. Patients with ≥2 physician visits with ICD-10 codes F11, F12, F14, F15, F16, or F19 were considered to have ISUD. The underlying cause of death was analyzed for alcoholic liver disease, non-alcoholic liver disease, liver cancer, drug-related and external causes, non-liver cancers, or other causes. Mortality risks were assessed using the standardized mortality ratio (SMR) with 95% CIs and Cox regression analyses for cause-specific hazard ratios.Results: In total, 38,186 patients with HCV were included, with 31% meeting the ISUD definition. Non-alcoholic liver disease SMRs in patients with and without ISUD were 123.2 (95% CI, 103.7-145.2) and 69.4 (95% CI, 63.8-75.3), respectively. The significant independent factors associated with non-alcoholic liver disease mortality were older age, being unmarried, male sex, and having ISUD.Conclusions: The relative risks for non-alcoholic liver disease mortality were elevated for patients with ISUD. Having ISUD was a significant independent factor for non-alcoholic liver disease. Thus, patients with HCV with ISUD should be given HCV treatment to reduce the risk for liver disease.
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Affiliation(s)
- Martin Kåberg
- Department of Medicine Huddinge, Division of Infectious Diseases, Karolinska Institutet at Karolinska University Hospital, Stockholm, Sweden.,Stockholm Needle Exchange, Stockholm Centre for Dependency Disorders, Stockholm, Sweden
| | - Simon B Larsson
- Department of Infectious Diseases, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Addiction, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Anna Jerkeman
- Department of Translational Medicine, Section of Infectious Disease, Malmö, Lund University, Malmö, Sweden
| | - Anders Nystedt
- Center for Communicable Disease Control, Region Norrbotten, Sweden
| | - Ann-Sofi Duberg
- Department of Infectious Diseases, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | | | - Magdalena Ydreborg
- Department of Infectious Diseases, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Soo Aleman
- Department of Medicine Huddinge, Division of Infectious Diseases, Karolinska Institutet at Karolinska University Hospital, Stockholm, Sweden
| | - Katharina Büsch
- AbbVie AB, Stockholm, Sweden.,Department of Laboratory Medicine, Division of Clinical Microbiology, Karolinska Institutet at Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Marianne Alanko Blomé
- Department of Translational Medicine, Section of Infectious Disease, Malmö, Lund University, Malmö, Sweden.,Center for Communicable Disease Control, Region Skåne, Sweden
| | - Ola Weiland
- Department of Medicine Huddinge, Division of Infectious Diseases, Karolinska Institutet at Karolinska University Hospital, Stockholm, Sweden
| | - Jonas Söderholm
- AbbVie AB, Stockholm, Sweden.,Department of Laboratory Medicine, Division of Clinical Microbiology, Karolinska Institutet at Karolinska University Hospital, Huddinge, Stockholm, Sweden
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20
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Starbird LE, Budhathoki C, Han HR, Sulkowski MS, Reynolds NR, Farley JE. Nurse case management to improve the hepatitis C care continuum in HIV co-infection: Results of a randomized controlled trial. J Viral Hepat 2020; 27:376-386. [PMID: 31750598 PMCID: PMC7080578 DOI: 10.1111/jvh.13241] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 10/22/2019] [Accepted: 11/11/2019] [Indexed: 02/03/2023]
Abstract
The opportunity to eliminate hepatitis C virus (HCV) is at hand, but challenges remain that negatively influence progress through the care continuum, particularly for persons co-infected with HIV who are not well engaged in care. We conducted a randomized controlled trial to test the effect of nurse case management (NCM) on the HCV continuum among adults co-infected with HIV compared to usual care (UC). Primary outcomes included linkage to HCV care (attendance at an HCV practice appointment within 60 days) and time to direct-acting antiviral (DAA) initiation (censored at 6 months). Sixty-eight participants were enrolled (NCM n = 35; UC n = 33). Participants were 81% Black/African American, 85% received Medicaid, 46% reported illicit drug use, 41% alcohol use, and 43% had an undetectable HIV viral load. At day 60, 47% of NCM participants linked to HCV care compared to 25% of UC participants (P = .031; 95% confidence bound for difference, 3.2%-40.9%). Few participants initiated DAAs (12% NCM; 25% UC). There was no significant difference in mean time to treatment initiation (NCM = 86 days; UC = 110 days; P = .192). Engagement in HCV care across the continuum was associated with drinking alcohol, knowing someone who cured HCV and having a higher CD4 cell count (P < .05). Our results support provision of NCM as a successful strategy to link persons co-infected with HIV to HCV care, but interventions should persist beyond linkage to care. Capitalizing on social networks, treatment pathways for patients who drink alcohol, and integrated substance use services may help improve the HCV care continuum.
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Affiliation(s)
- Laura E. Starbird
- Johns Hopkins University School of Nursing, Baltimore, MD, USA,Columbia University School of Nursing, New York, NY, USA
| | | | - Hae-Ra Han
- Johns Hopkins University School of Nursing, Baltimore, MD, USA
| | | | | | - Jason E. Farley
- Johns Hopkins University School of Nursing, Baltimore, MD, USA
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21
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Falade-Nwulia O, Sacamano P, McCormick SD, Yang C, Kirk G, Thomas D, Sulkowski M, Latkin C, Mehta SH. Individual and network factors associated with HCV treatment uptake among people who inject drugs. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2020; 78:102714. [PMID: 32135398 DOI: 10.1016/j.drugpo.2020.102714] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 02/15/2020] [Accepted: 02/23/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Hepatitis C virus (HCV) treatment uptake among people who inject drugs (PWID), a population with disproportionately high rates of HCV, remains low. Peers have been shown to positively impact a broad range of health outcomes for PWID. There is, however, limited data on the impact of PWID social network members on HCV treatment. METHODS HCV-infected PWID enrolled in an ongoing community-based cohort were recruited as "indexes" to complete an egocentric social network survey. The survey elicited from the index PWID a list of their network members and the index's perception of network member characteristics. Logistic regression analyses were conducted to compare individual and network factors associated with HCV treatment in the index PWID. RESULTS Among 540 HCV-infected PWID, the mean age was 55.7 years and the majority were black (87.2%) and male (69.8%). PWID reported a mean of 4.4 (standard deviation [SD] 3.2) network members, most of whom were relatives (mean 2.2 [SD 1.5]). In multivariable analysis, increasing index age and HIV infection were positively associated with HCV treatment, while drug use and homelessness in the preceding 6 months were negatively associated with HCV treatment. From a network perspective, having at least one network member who regularly talked with the index about seeing their doctor for HIV care was associated with HCV treatment (Adjusted Odds Ratio [AOR] 2.7; 95% Confidence Interval (CI) [1.3, 5.6]). Conversely, PWID who had at least one network member who helped them understand their HCV care were less likely to have been HCV treated (AOR 0.2; CI [0.1, 0.6). CONCLUSION HCV treatment uptake in this group of PWID appeared to be positively influenced by discussions with network members living with HIV who were in care and negatively influenced by HCV information sharing within PWID networks. These findings underscore the influence of peers on health seeking behaviors of their network members and emphasizes the importance of well-informed peers.
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Affiliation(s)
- Oluwaseun Falade-Nwulia
- Johns Hopkins University School of Medicine, 725 N. Wolfe Street, Suite 215, Baltimore, MD 21205, USA.
| | - Paul Sacamano
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Sean D McCormick
- Johns Hopkins University School of Medicine, 725 N. Wolfe Street, Suite 215, Baltimore, MD 21205, USA
| | - Cui Yang
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Greg Kirk
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - David Thomas
- Johns Hopkins University School of Medicine, 725 N. Wolfe Street, Suite 215, Baltimore, MD 21205, USA
| | - Mark Sulkowski
- Johns Hopkins University School of Medicine, 725 N. Wolfe Street, Suite 215, Baltimore, MD 21205, USA
| | - Carl Latkin
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Shruti H Mehta
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
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22
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O'Keefe-Markman C, Lea KD, McCabe C, Hyshka E, Bubela T. Social values for health technology assessment in Canada: a scoping review of hepatitis C screening, diagnosis and treatment. BMC Public Health 2020; 20:89. [PMID: 31959155 PMCID: PMC6971980 DOI: 10.1186/s12889-020-8190-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 01/09/2020] [Indexed: 02/06/2023] Open
Abstract
Background Health care system decision makers face challenges in allocating resources for screening, diagnosis and treatment of hepatitis C. Approximately 240,000 individuals are infected with the hepatitis C virus (HCV) in Canada. Populations most affected by HCV include Indigenous people, people who inject drugs, immigrants and homeless or incarcerated populations as well as those born between 1946 and 1965. Curative but expensive drug regimens of novel direct acting antivirals (DAAs) are available. We aim to identify social values from academic literature for inclusion in health technology assessments. Methods We conducted a scoping review of academic literature to identify and analyze the social values and evidence-based recommendations for screening, diagnosis and treatment of HCV in Canada. After applying inclusion/exclusion criteria, we abstracted: type of intervention(s), population(s) affected, study location, screening methods, diagnostics and treatments. We then abstracted and applied qualitative codes for social values. We extracted social value statements and clustered them into one of 4 categories: (1) equity and justice, (2) duty to provide care, (3) maximization of population benefit, and (4) individual versus community interests. Results One hundred and eighteen articles met our inclusion criteria on screening, diagnosis and treatment of HCV in Canada. Of these, 54 (45.8%) discussed screening, 4 (3.4%) discussed diagnosis and 60 (50.8%) discussed treatment options. Most articles discussed the general population and other non-vulnerable populations. Articles that discussed vulnerable populations focused on people who inject drugs. We coded 1243 statements, most of which fell into the social value categories of equity and justice, duty to provide care and maximization of population benefit. Conclusion The academic literature identified an expanded set of social values to be taken into account by resource allocation decision makers in financially constrained environments. In the context of hepatitis C, authors called for greater consideration of equity and justice and the duty to provide care in making evidence-based recommendations for screening, diagnosis and treatment for different populations and in different settings that also account for individual and community interests.
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Affiliation(s)
| | - Kristina Dawn Lea
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Christopher McCabe
- Institute of Health Economics, Edmonton, AB, Canada.,Department of Emergency Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Elaine Hyshka
- School of Public Health, University of Alberta, Edmonton, AB, Canada.,Inner City Health and Wellness, Royal Alexandra Hospital, Edmonton, AB, Canada
| | - Tania Bubela
- Faculty of Health Sciences, Simon Fraser University, Burnaby, BC, Canada.
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23
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Mohsen W, Chan P, Whelan M, Glass A, Mouton M, Young E, Tran Q, Arora S, Davison S, Lama T, Cobrador C, Levy M. Hepatitis C treatment for difficult to access populations: can telementoring (as distinct from telemedicine) help? Intern Med J 2019; 49:351-357. [PMID: 30091164 DOI: 10.1111/imj.14072] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 07/21/2018] [Accepted: 07/23/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Although hepatitis C virus (HCV) infection is curable, treatment of difficult to access populations (DTAP) presents unique challenges. Project ECHO (PE) (Extension for Community Healthcare Outcomes) is a telementoring programme adopted to support clinicians treating DTAP. AIMS To determine if the PE model supports primary care clinicians treating HCV and to compare cohort of PE patients with those in a tertiary liver clinic (TLC). METHODS Weekly PE group video conferences were conducted. Clinical information, laboratory indices, psychosocial elements and treatment outcomes, including sustained virological response (SVR) data were recorded in the first 100 consecutive cases and retrospectively compared to 100 consecutive patients seen at a TLC from July 2016 to April 2017. RESULTS Some patient characteristics were similar between PE and TLC: gender (72% vs 75% male; P = 0.23), median age (45 vs 50; P = 0.344) and the proportion of treatment naïve patients (95.0% vs 90.9%). Treatment for HCV was commenced in 78% of the PE patients and 81% of the TLC patients; 67/68 of the TLC patients and 60/61 PE patients with virological follow up who completed treatment and attended follow up have confirmed SVR. PE patients are more likely to have ongoing substance use (44% vs 17% P < 0.001), be active intravenous drug users (32% vs 17%; P < 0.001) and polysubstance abusers (26% vs 7%; P < 0.001) and were more likely to be taking opioid substitution therapy (74% vs 20%; P < 0.001). Indigenous patients were three times more greatly represented in PE (15% vs 5%; P = 0.018). CONCLUSION PE is an effective model to support primary healthcare providers treating HCV in DTAP with similar rates of treatment uptake and SVR compared to patients in TLC.
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Affiliation(s)
- Waled Mohsen
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Patrick Chan
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Michelle Whelan
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Ann Glass
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Marlize Mouton
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Ernest Young
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Quyen Tran
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Sanjeev Arora
- Department of Internal Medicine, University of New Mexico, Albuquerque, New Mexico, USA
| | - Scott Davison
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Tenzin Lama
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Cherry Cobrador
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Miriam Levy
- Department of Gastroenterology and Hepatology, Liverpool Hospital, Sydney, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
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24
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Litwin AH, Jost J, Wagner K, Heo M, Karasz A, Feinberg J, Kim AY, Lum PJ, Mehta SH, Taylor LE, Tsui JI, Pericot-Valverde I, Page K. Rationale and design of a randomized pragmatic trial of patient-centered models of hepatitis C treatment for people who inject drugs: The HERO study. Contemp Clin Trials 2019; 87:105859. [PMID: 31669450 PMCID: PMC7261375 DOI: 10.1016/j.cct.2019.105859] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 09/25/2019] [Accepted: 10/02/2019] [Indexed: 12/23/2022]
Abstract
BACKGROUND Although people who inject drugs (PWID) having the highest incidence and prevalence of hepatitis C virus (HCV) in the US, HCV treatment is rarely provided to PWID due to assumptions about poor adherence and reinfection risk. As direct-acting antiviral agents (DAAs) have achieved sustained virologic response (SVR) rates of 95% or more, evidence-based strategies are urgently needed to demonstrate real-world effectiveness in marginalized patient populations such as PWID. The objectives of this study are: 1) to determine whether either of two patient-centered treatment models - patient navigation (PN) or modified directly observed therapy (mDOT) - results in more forward movement along the HCV care cascade including treatment initiation, adherence, and SVR; 2) using quantitative and qualitative methods, to understand factors associated with lack of treatment uptake, poor adherence (<80%), failure to achieve SVR, DAA resistance, and HCV reinfection. METHODS The HERO study is a multi-site, pragmatic randomized clinical trial conducted in eight states where 754 HCV-infected PWID were randomly assigned to either PN or mDOT. CONCLUSIONS This study addresses an urgent need for timely and accurate information on optimal models of care to promote HCV treatment initiation, adherence, treatment completion and SVR among PWID, as well as rates and factors associated with reinfection and resistance after treatment. This clinical trial has the potential to provide valuable information on how to reduce the burden of the HCV epidemic in PWID.
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Affiliation(s)
- Alain H Litwin
- Clemson University School of Health Research, Clemson, SC, USA; Department of Medicine, University of South Carolina School of Medicine, Greenville, SC, USA; Department of Medicine, Prisma Health, Greenville, SC, USA.
| | - John Jost
- Department of Medicine, Montefiore Medical Center, Bronx, NY, USA
| | - Katherine Wagner
- Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Moonseong Heo
- Department of Public Health Sciences, College of Behavioral, Social, and Health Sciences, Clemson University Clemson, SC, USA
| | | | - Judith Feinberg
- Department of Behavioral Medicine & Psychiatry and Department of Medicine, West Virginia University, Morgantown, WV, USA
| | - Arthur Y Kim
- Department of Infectious Diseases, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Paula J Lum
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Shruti H Mehta
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Lynn E Taylor
- College of Pharmacy, University of Rhode Island, CODAC Behavioral Health, Providence, RI, USA
| | - Judith I Tsui
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Irene Pericot-Valverde
- Clemson University School of Health Research, Clemson, SC, USA; Department of Medicine, Prisma Health, Greenville, SC, USA
| | - Kimberly Page
- Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
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25
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Liu Y, Zou X, Chen W, Gong C, Ling L. Hepatitis C Virus Treatment Status and Barriers among Patients in Methadone Maintenance Treatment Clinics in Guangdong Province, China: A Cross-Sectional, Observational Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16224436. [PMID: 31726750 PMCID: PMC6888391 DOI: 10.3390/ijerph16224436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 10/31/2019] [Accepted: 11/08/2019] [Indexed: 12/13/2022]
Abstract
We aimed to evaluate the status and barriers related to hepatitis C virus (HCV) treatment among Chinese methadone maintenance treatment (MMT) clients, and the willingness and barriers of patients to accept directly observed treatment (DOT) service and oral direct-acting antivirals (DAAs). We conducted a cross-sectional survey from July to October 2017 in Guangdong Province, China, involving 678 HCV antibody-positive MMT patients. If they reported being infected with HCV, then their HCV treatment experience, willingness to use DOT and DAAs, along with any barriers, were collected. Logistic regression analysis was used to identify the correlates of initiating HCV treatment. Among those reporting HCV infection (54%, 366/678), 39% (144/366) initiated treatment; however, 38% (55/144) interrupted and 55% (79/135) delayed treatment for 15 months. Seventy-five percent (273/366) and 53% (195/366) were willing to use DOT and DAAs, respectively. Unaffordable medical costs and insignificant symptoms were the major barriers to HCV treatment and accepting DOT or DAAs. The lack of a stable residence, being a woman, and having ever injected drugs were all associated with a low probability of initiating treatment (p < 0.05). This study highlights a limited uptake of HCV treatment among MMT patients, and a need to strengthen the popularity of DOT and DAAs and integrate them into Chinese MMT clinics.
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Affiliation(s)
| | | | | | | | - Li Ling
- Correspondence: ; Tel.: +86-020-873-3319
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26
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Litwin AH, Drolet M, Nwankwo C, Torrens M, Kastelic A, Walcher S, Somaini L, Mulvihill E, Ertl J, Grebely J. Perceived barriers related to testing, management and treatment of HCV infection among physicians prescribing opioid agonist therapy: The C-SCOPE Study. J Viral Hepat 2019; 26:1094-1104. [PMID: 31074167 PMCID: PMC6771477 DOI: 10.1111/jvh.13119] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/18/2019] [Accepted: 04/09/2019] [Indexed: 12/15/2022]
Abstract
The aim of this analysis was to evaluate perceived barriers related to HCV testing, management and treatment among physicians practicing in clinics offering opioid agonist treatment (OAT). C-SCOPE was a study consisting of a self-administered survey among physicians practicing at clinics providing OAT in Australia, Canada, Europe and the United States between April and May 2017. A 5-point Likert scale (1 = not a barrier, 3 = moderate barrier, 5 = extreme barrier) was used to measure responses to perceived barriers for HCV testing, evaluation and treatment across the domains of the health system, clinic and patient. Among the 203 physicians enrolled (40% USA, 45% Europe, 14% Australia/Canada), 21% were addiction medicine specialists, 29% psychiatrists and 69% were metro/urban. OAT physicians in this study reported poor access to on-site venepuncture (35%), point-of-care HCV testing (16%), and noninvasive liver disease assessment (25%). Only 30% of OAT physicians reported personally treating HCV infection. Major perceived health system barriers to HCV management included the lack of funding for noninvasive liver disease testing, long wait times to see an HCV specialist, lack of funding for new HCV therapies, and reimbursement restrictions based on drug/alcohol use. Major perceived clinic barriers included the lack of peer support programmes and/or HCV case managers to facilitate linkage to care, the need to refer people off-site for noninvasive liver disease staging, the lack of support for on-site phlebotomy and the lack of on-site delivery of HCV therapy. This study highlights several important modifiable barriers to enhance HCV testing, evaluation and treatment among PWID attending OAT clinics.
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Affiliation(s)
- Alain H. Litwin
- Department of MedicineUniversity of South Carolina School of Medicine ‐ Greenville and Prisma HealthGreenvilleSouth Carolina,Clemson University School of Health ResearchClemsonSouth Carolina
| | | | | | - Martha Torrens
- Department of PsychiatryInstitut de Neuropsiquiatria i AddiccionsHospital del Mar BarcelonaIMIM (Institut Hospital del Mar d'Investigacions Mediques)Universitat Autònoma de BarcelonaBarcelonaSpain
| | - Andrej Kastelic
- National Centre for the Treatment of Drug Addiction in LjubljanaLjubljanaSlovenia
| | | | - Lorenzo Somaini
- Addiction Treatment Centre ‐ Ser.D ASL BI ‐ Local Health UnitBiellaItaly
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27
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Molinaro S, Resce G, Alberti A, Andreoni M, D′Egidio PPF, Leonardi C, Nava FA, Pasqualetti P, Villa S. Barriers to effective management of hepatitis C virus in people who inject drugs: Evidence from outpatient clinics. Drug Alcohol Rev 2019; 38:644-655. [DOI: 10.1111/dar.12978] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 07/11/2019] [Accepted: 07/22/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Sabrina Molinaro
- Institute of Clinical Physiology, National Research Council of Italy (IFC‐CNR) Pisa Italy
| | - Giuliano Resce
- Institute of Clinical Physiology, National Research Council of Italy (IFC‐CNR) Pisa Italy
| | - Alfredo Alberti
- Dipartimento di Medicina MolecolareUniversità di Padova Padua Italy
| | - Massimo Andreoni
- Clinica Malattie Infettive, Dipartimento di Medicina dei SistemiUniversità di Roma Tor Vergata Rome Italy
| | - Pietro P. F. D′Egidio
- Presidente FeDerSerD ‐ Federazione Italiana degli Operatori dei Dipartimenti e dei Servizi delle Dipendenze Como Italy
| | - Claudio Leonardi
- UOC Prevenzione e Cura Tossicodipendenze ed Alcolismo, ASL Roma “C” Rome Italy
| | - Felice A. Nava
- Azienda ULSS 16 di Padova, Distretto Socio‐Sanitario n. 1, Struttura Semplice Dipartimentale “Sanità Penitenziaria” Padua Italy
| | - Patrizio Pasqualetti
- Fondazione Fatebenefratelli per la Ricerca e la Formazione Sanitaria e Sociale Rome Italy
| | - Stefano Villa
- Dipartimento di Scienze dell′Economia e della Gestione AziendaleUniversità Cattolica del Sacro Cuore Rome Italy
- CERISMAS (Research Centre in Healthcare Management)Università Cattolica del Sacro Cuore Milan Italy
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Elimination of hepatitis C virus infection among people who use drugs: Ensuring equitable access to prevention, treatment, and care for all. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2019; 72:1-10. [PMID: 31345644 DOI: 10.1016/j.drugpo.2019.07.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 07/05/2019] [Accepted: 07/06/2019] [Indexed: 12/12/2022]
Abstract
There have been major strides towards the World Health Organization goal to eliminate hepatitis C virus (HCV) infection as a global public health threat. The availability of simple, well-tolerated direct-acting antiviral therapies for HCV infection that can achieve a cure in >95% of people has provided an important tool to help achieve the global elimination targets. Encouragingly, therapy is highly effective among people receiving opioid agonist therapy and people who have recently injected drugs. Moving forward, major challenges include ensuring that new infections are prevented from occurring and that people who are living with HCV are tested, linked to care, treated, receive appropriate follow-up, and have equitable access to care. This editorial highlights key themes and articles in a special issue focusing on the elimination of HCV among people who inject drugs. An overarching consideration flowing from this work is how to ensure equitable access to HCV treatment and care for all. This special issue maps the field in relation to: HCV prevention; the cascade of HCV care; strategies to enhance testing, linkage to care, and treatment uptake; and HCV treatment and reinfection. In addition, papers draw attention to the 'risk environments' and socio-ecological determinants of HCV acquisition, barriers to HCV care, the importance of messaging around the side-effects of new direct-acting antiviral therapies, the positive transformative potential of treatment and cure, and the key role of community-based drug user organizations in the HCV response. While this special issue highlights some successful efforts towards HCV elimination among people who inject drugs, it also highlights the relative lack of attention to settings in which resources enabling elimination are scarce, and where elimination hopes and potentials are less clear, such as in many low and middle income countries. Strengthening capacity in areas of the world where resources are more limited will be a critical step towards ensuring equity for all so that global HCV elimination among PWID can be achieved.
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Tompkins CNE, Neale J, Strang J. Opioid users' willingness to receive prolonged-release buprenorphine depot injections for opioid use disorder. J Subst Abuse Treat 2019; 104:64-71. [PMID: 31370986 DOI: 10.1016/j.jsat.2019.06.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 06/07/2019] [Accepted: 06/07/2019] [Indexed: 12/18/2022]
Abstract
AIMS Prolonged-release implantable and depot injection formulations of buprenorphine are very recent developments in the treatment of opioid use disorder. Such formulations remove the need for daily dosing and provide patients with sustained concentrations of buprenorphine over a period of weeks or months. We explored opioid users' personal willingness to receive prolonged-release buprenorphine depot injections and factors influencing their interest. METHODS The study took place in London during 2018, before depot buprenorphine was licensed for use in Europe. Thirty-six face-to-face, semi-structured qualitative interviews were conducted with people who were: i) using heroin daily and not receiving any treatment for opioid use (n = 12); or ii) prescribed daily oral buprenorphine (n = 12); or iii) prescribed daily oral methadone (n = 12). Participants were asked about their willingness to receive depot buprenorphine and were encouraged to discuss factors that might alter their opinions. Interview data were analysed following the stages of Iterative Categorization. FINDINGS Participants expressed a high level of willingness to receive depot buprenorphine. Their views were influenced both positively and negatively by six key features of depot buprenorphine: i) reduced contact with pharmacies and drug treatment services; ii) impact on illicit drug use and recovery; iii) the perceived effectiveness of depot buprenorphine; iv) the duration and dosage of depot buprenorphine injections; v) clinical administration of the depot buprenorphine injection; and vi) potential for side effects associated with the depot buprenorphine injection. CONCLUSIONS Willingness to receive a given medication is complex, individual and changeable. Opioid users seem likely to welcome greater choice and flexibility in respect of opioid agonist medications and appear more likely to accept and adhere to depot buprenorphine if it enables them to reduce their illicit drug use and facilitates their recovery. Research is now needed to assess whether patients' reported willingness to receive depot buprenorphine translates into actual uptake and adherence.
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Affiliation(s)
- Charlotte N E Tompkins
- National Addiction Centre, Institute of Psychiatry, Psychology & Neuroscience, 4 Windsor Walk, King's College London, London SE5 8AF, United Kingdom.
| | - Joanne Neale
- National Addiction Centre, Institute of Psychiatry, Psychology & Neuroscience, 4 Windsor Walk, King's College London, London SE5 8AF, United Kingdom; South London & Maudsley (SLaM) NHS Foundation Trust, Maudsley Hospital, Denmark Hill, London SE5 8BB, United Kingdom; Centre for Social Research in Health, University of New South Wales, Sydney, Australia
| | - John Strang
- National Addiction Centre, Institute of Psychiatry, Psychology & Neuroscience, 4 Windsor Walk, King's College London, London SE5 8AF, United Kingdom; South London & Maudsley (SLaM) NHS Foundation Trust, Maudsley Hospital, Denmark Hill, London SE5 8BB, United Kingdom
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Gaps in HCV Knowledge and Risk Behaviors among Young Suburban People Who Inject Drugs. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16111958. [PMID: 31159479 PMCID: PMC6604001 DOI: 10.3390/ijerph16111958] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/02/2019] [Accepted: 05/29/2019] [Indexed: 01/28/2023]
Abstract
Background: Hepatitis C virus (HCV) among young suburban people who inject drugs (PWID) is a growing epidemic in the United States, yet little is known about the factors contributing to increased exposure. The goal of this study was to explore and assess HCV knowledge and attitudes about treatment and identify risk behaviors among a cohort of young suburban PWID. Methods: We conducted interviews with New Jersey (NJ) service providers and staff from the state’s five syringe service programs to inform a semistructured survey addressing HCV knowledge, treatment, and risk factors among young suburban PWID. We then used this survey to conduct qualitative interviews with 14 young suburban PWID (median age 26 years) in NJ between April and May 2015. Data were analyzed using a modified grounded theory approach and coded to identify thematic relationships among respondents. Results: Most participants had substantial gaps in several aspects of HCV knowledge. These included: HCV transmission, HCV symptoms, and the availability of new direct-acting antiviral therapy. Participants also downplayed the risk of past and current risk behaviors, such as sharing drug paraphernalia and reusing needles, which also reflected incomplete knowledge regarding these practices. Conclusion: Young suburban PWID are not receiving or retaining accurate and current HCV information. Innovative outreach and prevention messages specifically tailored to young suburban PWID may help to disseminate HCV prevention and treatment information to this population.
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Lower HCV treatment uptake in women who have received opioid agonist therapy before and during the DAA era: The ANRS FANTASIO project. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2019; 72:61-68. [PMID: 31129024 DOI: 10.1016/j.drugpo.2019.05.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 05/10/2019] [Accepted: 05/11/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND In the era of direct-acting antivirals (DAA) for the treatment of hepatitis C virus (HCV) infection, HCV treatment uptake remains insufficiently documented in key populations such as people with opioid dependence. Access to opioid agonist therapy (OAT) is facilitated in France through delivery in primary care, and individuals with opioid dependence can be identified as those receiving OAT. Women with opioid dependence are especially vulnerable because of associated sex-related stigma, discrimination, and marginalization, all of which negatively interfere with access to HCV prevention and care. This study, based on data collected between 2012 and 2016 in France, aimed to assess whether (i) chronically HCV-infected women with opioid dependence had lower rates of HCV treatment uptake than their male counterparts during the same period (i.e., study period), and (ii) the advent of DAA resulted in increased treatment uptake rates in these women. METHODS Individuals with opioid dependence were identified as those receiving OAT at least once during the study period. Analyses were based on exhaustive anonymous care delivery data from the French national healthcare reimbursement database. We used multinomial logistic regression to estimate sex-based disparities in HCV treatment uptake (DAA or pegylated-interferon (Peg-IFN)-based treatment versus no treatment) while accounting for potential confounders. RESULTS The study sample comprised 27,127 individuals, including 5640 (20.8%) women. Median [interquartile range] age was 45 [40-49] years. Between 2012 and 2016, 70.9 (women: 77.2; men: 69.3), 17.3 (14.2; 18.2) and 11.7% (8.6%; 12.5%) of the study sample received, respectively, no HCV treatment, DAA and Peg-IFN-based treatment only. After multiple adjustment for potential confounders, women were 41% (adjusted odds-ratio (AOR) [95% confidence interval (CI]): 0.59[0.53-0.65]) and 28% (0.72[0.66-0.78]) less likely than men to have had Peg-IFN-based and DAA treatment, respectively. CONCLUSION Despite increased HCV treatment uptake in women with opioid dependence in the DAA era, rates remain lower than for men. In the coming years, access to DAA treatment will continue to increase in France thanks to a forthcoming simplified model of HCV care which includes primary care as an entry point. Nevertheless, a greater understanding of sex-specific barriers to HCV care and the implementation of appropriate sex-specific measures remain a priority.
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Høj SB, Jacka B, Minoyan N, Artenie AA, Bruneau J. Conceptualising access in the direct-acting antiviral era: An integrated framework to inform research and practice in HCV care for people who inject drugs. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2019; 72:11-23. [PMID: 31003825 DOI: 10.1016/j.drugpo.2019.04.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 03/22/2019] [Accepted: 04/01/2019] [Indexed: 12/17/2022]
Abstract
As direct-acting antiviral (DAA) therapy costs fall and eligibility criteria are relaxed, people who inject drugs (PWID) will increasingly become eligible for HCV treatment. Yet eligibility does not necessarily equate to access. Amidst efforts to expand treatment uptake in this population, we seek to synthesise and clarify the conceptual underpinnings of access to health care for PWID, with a view to informing research and practice. Integrating dominant frameworks of health service utilisation, care seeking processes, and ecological perspectives on health promotion, we present a comprehensive theoretical framework to understand, investigate and intervene upon barriers and facilitators to HCV care for PWID. Built upon the concept of Candidacy, the framework describes access to care as a continually negotiated product of the alignment between individuals, health professionals, and health systems. Individuals must identify themselves as candidates for services and then work to stake this claim; health professionals serve as gatekeepers, adjudicating asserted candidacies within the context of localised operating conditions; and repeated interactions build experiential knowledge and patient-practitioner relationships, influencing identification and assertion of candidacy over time. These processes occur within a complex social ecology of interdependent individual, service, system, and policy factors, on which other established theories provide guidance. There is a pressing need for a deliberate and nuanced theory of health care access to complement efforts to document the HCV 'cascade of care' among PWID. We offer this framework as an organising device for observational research, intervention, and implementation science to expand access to HCV care in this vulnerable population. Using practical examples from the HCV literature, we demonstrate its utility for specifying research questions and intervention targets across multiple levels of influence; describing and testing plausible effect mechanisms; and identifying potential threats to validity or barriers to research translation.
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Affiliation(s)
- Stine Bordier Høj
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), 900 rue St-Denis, Montréal, Québec, H2X 0A9, Canada.
| | - Brendan Jacka
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), 900 rue St-Denis, Montréal, Québec, H2X 0A9, Canada
| | - Nanor Minoyan
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), 900 rue St-Denis, Montréal, Québec, H2X 0A9, Canada; École de Santé Publique de l'Université de Montréal, 7101 Avenue du Parc, Montréal, Québec, H3N 1X9, Canada
| | - Andreea Adelina Artenie
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), 900 rue St-Denis, Montréal, Québec, H2X 0A9, Canada; École de Santé Publique de l'Université de Montréal, 7101 Avenue du Parc, Montréal, Québec, H3N 1X9, Canada
| | - Julie Bruneau
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), 900 rue St-Denis, Montréal, Québec, H2X 0A9, Canada; Département de Médicine Familiale et Médecine d'Urgence, Faculté de médecine, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec, H3C 3J7, Canada.
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Yakovenko I, Hyshka E, Tyrrell L, Wild TC. Willingness to participate in hepatitis C vaccine trials among socially marginalized people who use drugs. J Subst Abuse Treat 2019; 101:67-71. [PMID: 31174715 DOI: 10.1016/j.jsat.2019.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/25/2018] [Accepted: 03/26/2019] [Indexed: 11/29/2022]
Abstract
A major complicating factor for hepatitis C virus (HCV) vaccine clinical trial design and implementation is engagement and retention of people who use drugs (PWUD). Informed willingness to participate (WTP) in vaccine trials has emerged as a critical issue to describe, understand, and promote among populations at increased risk of communicable disease incidence. The present study addressed this topic by examining correlates of WTP among 320 socially marginalized PWUD as part of the Edmonton Drug Use and Health Survey (EDUHS). WTP was analyzed in relation to: gender, age, housing stability, ethnicity; self-reported hospital care in the past six months, self-reported injection drug use in the past 6 months, lifetime addiction treatment for alcohol or drugs, severity of drug use problems, and unmet healthcare needs. EDUHS participants reported high rates of current injection drug use (91%), and about two-thirds (67.3%) reported a lifetime HCV positive status. HCV positive respondents were older, had more severe substance use problems, and reported injecting drugs more frequently, compared to HCV negative respondents. Among the subsample of HCV negative respondents, 81% affirmed that they would be willing to enroll in a HCV vaccine prevention trial. Those reporting WTP were more likely to have had a recent hospital admission, to report more total unmet healthcare needs, and greater unmet needs for information, hospital care, and counseling, compared to HCV negative respondents not willing to enroll in a vaccine trial. No association was observed between WTP and other assessed variables. Results suggest that connecting PWUD not infected with HCV to local healthcare resources may be important in motivating vaccine trial participation.
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Affiliation(s)
| | - Elaine Hyshka
- School of Public Health, University of Alberta, Canada
| | - Lorne Tyrrell
- Li Ka Shing Institute of Virology, University of Alberta, Canada
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Gicquelais RE, Foxman B, Coyle J, Eisenberg MC. Hepatitis C transmission in young people who inject drugs: Insights using a dynamic model informed by state public health surveillance. Epidemics 2019; 27:86-95. [PMID: 30930214 DOI: 10.1016/j.epidem.2019.02.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 12/18/2018] [Accepted: 02/18/2019] [Indexed: 12/12/2022] Open
Abstract
Increasing injection of heroin and prescription opioids have led to increases in the incidence of hepatitis C virus (HCV) infections in US young adults since the early 2000s. How best to interrupt transmission and decrease HCV prevalence in young people who inject drugs (PWID) is uncertain. We developed an age-stratified ordinary differential equation HCV transmission model of PWID aged 15-64, which we fit to Michigan HCV surveillance data among young PWID aged 15-29. We used Latin hypercube sampling to fit to data under 10,000 plausible model parameterizations. We used the best-fitting 10% of simulations to predict the potential impact of primary (reducing injection initiation), secondary (increasing cessation, reducing injection partners, or reducing injection drug use relapse), and tertiary (HCV treatment) interventions (over the period 2017-2030) on acute and chronic HCV cases by the year 2030. Treating 3 per 100 current and former PWID per year could reduce chronic HCV by 27.3% (range: 18.7-30.3%) and acute HCV by 23.6% (range: 6.7-29.5%) by 2030 among PWID aged 15-29 if 90% are cured (i.e. achieved sustained virologic response [SVR] to treatment). Reducing the number of syringe sharing partners per year by 10% was predicted to reduce chronic HCV by 15.7% (range: 9.4-23.8%) and acute cases by 21.4% (range: 14.2-32.3%) among PWID aged 15-29 by 2030. In simulations of combinations of interventions, reducing injection initiation, syringe sharing, and relapse rates each by 10% while increasing cessation rates by 10% predicted a 27.7% (range: 18.0-39.7%) reduction in chronic HCV and a 38.4% (range: 28.3-53.3%) reduction in acute HCV. Our results highlight the need for HCV treatment among both current and former PWID and the scale up of both primary and secondary interventions to concurrently reduce HCV prevalence and incidence in Michigan.
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Affiliation(s)
- Rachel E Gicquelais
- University of Michigan School of Public Health, Department of Epidemiology, 1415 Washington Heights, Ann Arbor, MI 48109, United States; Johns Hopkins Bloomberg School of Public Health, Department of Epidemiology, 615 N. Wolfe St, Baltimore, MD 21205, United States.
| | - Betsy Foxman
- University of Michigan School of Public Health, Department of Epidemiology, 1415 Washington Heights, Ann Arbor, MI 48109, United States.
| | - Joseph Coyle
- Michigan Department of Health and Human Services, 320 S Walnut St, Lansing, MI 48933, United States.
| | - Marisa C Eisenberg
- University of Michigan School of Public Health, Department of Epidemiology, 1415 Washington Heights, Ann Arbor, MI 48109, United States.
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Falade-Nwulia O, Irvin R, Merkow A, Sulkowski M, Niculescu A, Olsen Y, Stoller K, Thomas DL, Latkin C, Mehta SH. Barriers and facilitators of hepatitis C treatment uptake among people who inject drugs enrolled in opioid treatment programs in Baltimore. J Subst Abuse Treat 2019; 100:45-51. [PMID: 30898327 DOI: 10.1016/j.jsat.2019.01.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Hepatitis C virus (HCV) infection is a major public health issue among people who inject drugs (PWID) with prevalence of 50-80% in the United States. Effective, simple, oral direct acting agents (DAA) of short duration with minimal side effects have been associated with cure rates > 95%. However, HCV treatment uptake among PWID remains low. We characterized the HCV care continuum, HCV treatment knowledge, as well as barriers and facilitators to HCV treatment uptake among PWID enrolled in two opioid treatment programs (OTPs) in Baltimore, Maryland, USA. METHODS Between July and November 2016, 124 HCV infected PWID were recruited from two opioid treatment programs in Baltimore through convenience sampling. Participants completed a 50-item questionnaire to assess HCV treatment knowledge, attitudes, and practices. Progress through the HCV care continuum was assessed based on a series of questions assessing evaluation for HCV treatment, recommendation for HCV treatment by a provider, and HCV treatment initiation. HCV status was assessed based on participant self-report. RESULTS The median age was 52 years (IQR 44-58), 56% were male, the majority were African American (69%), and 19% reported HIV coinfection. Participants had been tested for HCV at their primary care provider's (PCP's) office (34%), drug treatment center (20%), emergency room (11%), or prison (9%), and most (60%) had been diagnosed with HCV over 5 years prior. The majority reported that HCV was a major health concern for them (91%), were aware there were new treatments for HCV (89%), and that the new treatments cure most people (69%). More than half (60%) had seen a health professional who could treat HCV, 40% had HCV therapy recommended by their HCV specialist, and 20% had started or completed treatment. In univariable analysis, PWID were significantly more likely to have been treated if they were HIV co-infected (OR 3.4 (95% CI 1.3-9.2)) or had a partner or friend concerned about their HCV (OR 3.4 (95% CI 1.2-9.7)), and were significantly less likely to have been treated if they had used any illicit drugs in the preceding 6 months (OR 0.4 (95% CI 0.2-0.99). In multivariable analysis, having a friend or partner concerned about their HCV remained significantly associated with HCV treatment (OR 5.0 (95% CI 1.4-17.7)). When questioned about what would facilitate HCV treatment, the majority (85%) reported that a friend telling them that HCV treatment had helped them and having HCV treatment provided at their opioid treatment program would make them more likely to engage in HCV treatment. CONCLUSION Despite a high prevalence of HCV among opioid treatment program patients and the availability of effective treatments, uptake remains low. We identified several key barriers and facilitators that can affect HCV treatment uptake.
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Affiliation(s)
| | - Risha Irvin
- Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Alana Merkow
- Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Mark Sulkowski
- Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Alexander Niculescu
- Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Yngvild Olsen
- Institute for Behavior Resources, Inc, REACH Health Services, Baltimore, MD, United States of America
| | - Kenneth Stoller
- Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - David L Thomas
- Johns Hopkins University School of Medicine, Baltimore, MD, United States of America; Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Carl Latkin
- Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Shruti H Mehta
- Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
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Ottman AA, Townsend ML, Hashem MG, Britt RB. Impact of Substance Use Disorder on the Rate of Sustained Virological Response in Veterans With Chronic Hepatitis C Treated With Direct-Acting Antivirals. Ann Pharmacother 2019; 53:581-587. [PMID: 30654625 DOI: 10.1177/1060028018824988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Substance use disorders (SUDs) are commonly encountered in patients with chronic hepatitis C virus (HCV) infection. It is important to consider the impact of SUDs on HCV treatment. OBJECTIVE To compare the rate of clinical cure (sustained virological response at least 12 weeks after end of therapy [SVR12]) in veterans with chronic HCV infection treated with direct-acting antivirals (DAAs) with and without ongoing or recent substance use. METHODS This single-center, retrospective cohort study evaluated 220 HCV patients treated with DAAs based on 2 groups: SUD (ongoing or recent substance use) or non-SUD (without ongoing or recent substance use). The primary end point was SVR12 achievement. Secondary end points included safety, adherence, early discontinuation, SVR12 achievement among SUD subgroups, and enrollment in a SUD treatment program. RESULTS Most patients were African American men with an average age of 60 years and infected with HCV genotype 1. Almost half of the patients had advanced fibrosis or cirrhosis. There was no difference in SVR12 between groups (SUD: 96.2%; non-SUD: 94.3%; P = 0.54). Overall, 35.5% of patients missed at least 1 dose of DAA therapy, with a significant difference noted between groups (SUD: 44.5%; non-SUD: 26.4%; P = 0.005). Early discontinuation of DAA therapy was similar between groups. SVR12 among SUD subgroups ranged from 92.9% to 100%. In the SUD group, 27.3% of patients were enrolled in a SUD treatment program. Conclusion and Relevance: This study suggests that recent/ongoing substance use does not affect achievement of clinical cure of chronic HCV and reinforces treatment in this patient population.
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Affiliation(s)
| | - Mary L Townsend
- 1 Durham Veterans Affairs Health Care System, Durham, NC, USA
| | | | - Rachel B Britt
- 1 Durham Veterans Affairs Health Care System, Durham, NC, USA
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Boucher LM, Bayoumi AM, Mark AE, Cooper C, Martin A, Marshall Z, Boyd R, Oickle P, Diliso N, Pineau D, Renaud B, LeBlanc S, Tyndall M, Lee OM, Kendall CE. Hepatitis C Testing, Status and Treatment among Marginalized People Who Use Drugs in an Inner City Setting: An Observational Cohort Study. Subst Use Misuse 2019; 54:18-30. [PMID: 29932800 DOI: 10.1080/10826084.2018.1485699] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Chronic hepatitis C virus (HCV) infection is common among people who inject drugs (PWID) and is associated with morbidity and premature death. Although HCV can be cured, treatment may be inaccessible. We studied HCV testing, status and treatment among marginalized people who use drugs in Ottawa, Canada, a setting with universal insurance coverage for physician services. METHODS We analyzed data from the Participatory Research in Ottawa: Understanding Drugs study, a cross-sectional, peer-administered survey of people who use drugs from 2012 to 2013. We linked responses to population-based health administrative databases and used multivariable Poisson regression to identify factors independently associated with self-reported HCV testing, self-reported positive HCV status, and database-determined engagement in HCV treatment. RESULTS Among 663 participants, 562 (84.8%) reported testing for HCV and 258 (45.9%) reported HCV-positive status. In multivariable analysis, HCV-positive status was associated with female gender (RR 1.27; 95%CI 1.04 to 1.55), advancing age (RR 1.03/year; 95%CI 1.02 to 1.04), receiving disability payments (RR 1.42; 95%CI 1.06 to 1.91), injecting drugs (RR 5.11; 95%CI 2.64 to 9.91), ever injecting with a used needle (RR 1.30; 95%CI 1.12 to 1.52), and ever having taken methadone (RR 1.26; 95%CI 1.05 to 1.52). Of HCV positive participants, 196 (76%) were engaged in primary care but only 23 (8.9%) had received HCV therapy. Conclusions/Importance: Although HCV testing and positive status rates are high among PWID in our study, few have received HCV treatment. Innovative initiatives to increase access to HCV treatment for PWID are urgently needed.
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Affiliation(s)
- Lisa M Boucher
- a Bruyere Research Institute , Ottawa , Ontario , Canada.,b Department of Epidemiology and Public Health , University of Ottawa , Ottawa , Ontario , Canada
| | - Ahmed M Bayoumi
- c Division of General Internal Medicine , St. Michael's Hospital , Ontario , Canada.,d Department of Medicine and Institute of Health Policy, Management, and Evaluation , University of Toronto , Toronto , Ontario , Canada
| | - Amy E Mark
- e Institute for Clinical Evaluative Sciences , Toronto , Canada
| | - Curtis Cooper
- f Clinical Epidemiology Program , Ottawa Hospital Research Institute , Ottawa , Ontario , Canada
| | - Alana Martin
- f Clinical Epidemiology Program , Ottawa Hospital Research Institute , Ottawa , Ontario , Canada
| | - Zack Marshall
- g School of Social Work , McGill University , Montreal , Quebec , Canada
| | - Rob Boyd
- h Sandy Hill Community Health Centre , Ottawa , Ontario , Canada
| | - Pam Oickle
- i Ottawa Public Health , Ottawa , Ontario , Canada
| | - Nicola Diliso
- j PROUD Community Advisory Committee , Ottawa , Ontario , Canada
| | - Dave Pineau
- j PROUD Community Advisory Committee , Ottawa , Ontario , Canada
| | - Brad Renaud
- j PROUD Community Advisory Committee , Ottawa , Ontario , Canada
| | - Sean LeBlanc
- k Drug Users Advocacy League , Ottawa , Ontario , Canada
| | - Mark Tyndall
- l BC Centre for Disease Control , Vancouver , British Columbia , Canada
| | - Olivia M Lee
- b Department of Epidemiology and Public Health , University of Ottawa , Ottawa , Ontario , Canada
| | - Claire E Kendall
- a Bruyere Research Institute , Ottawa , Ontario , Canada.,b Department of Epidemiology and Public Health , University of Ottawa , Ottawa , Ontario , Canada.,m Li Ka Shing Knowledge Institute of St. Michael's Hospital , Ontario , Canada
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Nitulescu R, Young J, Saeed S, Cooper C, Cox J, Martel-Laferriere V, Hull M, Walmsley S, Tyndall M, Wong A, Klein MB. Variation in hepatitis C virus treatment uptake between Canadian centres in the era of direct-acting antivirals. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2018; 65:41-49. [PMID: 30594080 DOI: 10.1016/j.drugpo.2018.08.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/07/2018] [Accepted: 08/14/2018] [Indexed: 12/25/2022]
Abstract
BACKGROUND Patients co-infected with HIV and hepatitis C virus (HCV) are a priority target for HCV treatment. The simplicity and efficacy of direct-acting antivirals (DAA) should help overcome patient, provider, and structural barriers to scaling up treatment. METHODS We estimated between-centre variation in DAA treatment uptake among 1734 patients enrolled at the 18 centres of the Canadian Co-Infection Cohort-a prospective cohort of adults co-infected with HIV and HCV. We then compared this variation to that observed during the interferon era. Time to treatment uptake was modeled using a Weibull time-to-event model adjusting for centre and patient characteristics thought to have an impact on treatment initiation in the DAA era. RESULTS At the time of administrative censoring (December 31, 2016), 981 cohort participants were eligible for second-generation DAA therapy (HCV RNA positive after November 21, 2013) of whom 278 initiated DAAs (16 patients per 100 person-years). Patients with low monthly income, Indigenous ethnicity, recent injection drug use, HCV genotype 3, or unknown HCV genotype were less likely to start treatment. After adjusting for patient characteristics, the estimated between-centre variance (σ2) was 0.29 (95% credible interval [CrI]: 0.09-0.89), considerably lower than during the interferon era (σ2 = 0.87, 95% CrI: 0.49-1.5). This between-centre variance was further reduced by the addition of centre-level effects for jurisdiction (σ2 = 0.15, 95% CrI: 0.02-0.60). CONCLUSION Much of the variation in treatment uptake between centres can now be attributed to regional differences. This suggests that after the introduction of DAAs, treatment barriers have shifted towards prescribing and reimbursement restrictions based on liver fibrosis, which vary by jurisdiction. The removal of these restrictions, however, will need to be paired with strategies to overcome patient-level barriers, which continue to prevent marginalized people and active substance users from accessing treatment.
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Affiliation(s)
- Roy Nitulescu
- Department of Medicine, Division of Infectious Diseases/Chronic Viral Illness Service, Glen site, McGill University Health Centre, Montreal, Canada
| | - Jim Young
- Department of Medicine, Division of Infectious Diseases/Chronic Viral Illness Service, Glen site, McGill University Health Centre, Montreal, Canada; Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital Basel, Switzerland; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Canada
| | - Sahar Saeed
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Canada
| | - Curtis Cooper
- Department of Medicine, University of Ottawa, Ottawa, Canada
| | - Joseph Cox
- Department of Medicine, Division of Infectious Diseases/Chronic Viral Illness Service, Glen site, McGill University Health Centre, Montreal, Canada; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Canada
| | | | - Mark Hull
- Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, Canada
| | - Sharon Walmsley
- University Health Network, Toronto, Canada; CIHR Canadian HIV Trials Network, Vancouver, Canada
| | - Mark Tyndall
- University of British Columbia, Vancouver, Canada
| | - Alexander Wong
- Department of Medicine, University of Saskatchewan, Regina, Canada
| | - Marina B Klein
- Department of Medicine, Division of Infectious Diseases/Chronic Viral Illness Service, Glen site, McGill University Health Centre, Montreal, Canada; CIHR Canadian HIV Trials Network, Vancouver, Canada.
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Schuch-Goi SB, Scherer JN, Kessler FHP, Sordi AO, Pechansky F, von Diemen L. Hepatitis C: clinical and biological features related to different forms of cocaine use. TRENDS IN PSYCHIATRY AND PSYCHOTHERAPY 2018; 39:285-292. [PMID: 29267513 DOI: 10.1590/2237-6089-2016-0076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 07/03/2017] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Hepatitis C virus (HCV) infection is related with several liver diseases such as cirrhosis and hepatocellular carcinomas, leading to more than 0.5 million deaths every year and to a great global burden. It is known that injection drug users show a high prevalence of HCV infection, being considered a risk group for this disease. Cocaine users seem to be in greater risk than other drug users, and several hypotheses for this association are being studied. AIM To review data on HCV infection in cocaine users, taking into consideration the relevance of the different routes of drug administration and other risk behaviors. METHODS This was a narrative review performed in the main scientific databases. RESULTS AND CONCLUSION Data suggest that cocaine use could be associated with HCV infection due to the specificities of cocaine consumption pattern, even in those subjects who do not inject drugs, in addition to other risky behaviors, such as tattooing and unprotected sex. Injectable cocaine users seem to be more susceptible to contamination than users who do not inject drugs. However, evidence is pointing to the possibility of infection by sharing drug paraphernalia other than syringes. Moreover, specific immune system impairments caused by cocaine use are also being linked with HCV infection susceptibility, persistence and increased pathological effects.
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Affiliation(s)
- Silvia Bassani Schuch-Goi
- Centro de Pesquisas em Álcool e Drogas, Centro Colaborador em Álcool e Drogas HCPA/SENAD, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Juliana Nichterwitz Scherer
- Centro de Pesquisas em Álcool e Drogas, Centro Colaborador em Álcool e Drogas HCPA/SENAD, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Felix Henrique Paim Kessler
- Centro de Pesquisas em Álcool e Drogas, Centro Colaborador em Álcool e Drogas HCPA/SENAD, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Anne Orgler Sordi
- Centro de Pesquisas em Álcool e Drogas, Centro Colaborador em Álcool e Drogas HCPA/SENAD, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Flavio Pechansky
- Centro de Pesquisas em Álcool e Drogas, Centro Colaborador em Álcool e Drogas HCPA/SENAD, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Lisia von Diemen
- Centro de Pesquisas em Álcool e Drogas, Centro Colaborador em Álcool e Drogas HCPA/SENAD, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
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Young S, Wood E, Milloy MJ, DeBeck K, Dobrer S, Nosova E, Kerr T, Hayashi PhD K. Hepatitis C cascade of care among people who inject drugs in Vancouver, Canada. Subst Abus 2018; 39:461-468. [PMID: 29949450 DOI: 10.1080/08897077.2018.1485128] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
BACKGROUND People who inject drugs (PWID) have high rates of hepatitis C virus (HCV) infection. Little is known about the rates of diagnosis and treatment for HCV among PWID. Therefore, this study aims to characterize the cascade of care in Vancouver, Canada, to improve HCV treatment access and delivery for PWID. METHODS Data were derived from 3 prospective cohort studies of PWID in Vancouver, Canada, between December 2005 and May 2015. The progression of participants was identified through 5 steps in the cascade of care: (1) chronic HCV; (2) linkage to HCV care; (3) liver disease assessment; (4) initiation of treatment; and (5) completion of treatment. Predictors of undergoing liver disease assessment for HCV treatment were identified using a multivariable extended Cox regression model. RESULTS Among 1571 participants with chronic HCV, 1359 (86.5%) had ever been linked to care, 1257 (80.0%) had undergone liver disease assessment, 163 (10.4%) had ever started HCV treatment, and 71 (4.5%) had ever completed treatment. In multivariable analyses, human immunodeficiency virus (HIV) seropositivity, use of methadone maintenance therapy, and hospitalization in the past 6 months were independently and positively associated with undergoing liver disease assessment (all P < .001), whereas daily heroin injection was independently and negatively associated with undergoing liver disease assessment (P < .001). CONCLUSIONS Among this cohort of PWID, few had been started on or completed treatment for HCV. These findings highlight the need to improve the prescribing of HCV treatment among PWID with active substance use.
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Affiliation(s)
- Samantha Young
- a Department of Medicine , University of British Columbia , Vancouver , British Columbia , Canada
| | - Evan Wood
- a Department of Medicine , University of British Columbia , Vancouver , British Columbia , Canada.,b British Columbia Centre on Substance Use, British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital , Vancouver , British Columbia , Canada
| | - M-J Milloy
- a Department of Medicine , University of British Columbia , Vancouver , British Columbia , Canada.,b British Columbia Centre on Substance Use, British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital , Vancouver , British Columbia , Canada
| | - Kora DeBeck
- b British Columbia Centre on Substance Use, British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital , Vancouver , British Columbia , Canada.,c School of Public Policy , Simon Fraser University , Vancouver , British Columbia , Canada
| | - Sabina Dobrer
- b British Columbia Centre on Substance Use, British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital , Vancouver , British Columbia , Canada
| | - Ekaterina Nosova
- b British Columbia Centre on Substance Use, British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital , Vancouver , British Columbia , Canada
| | - Thomas Kerr
- a Department of Medicine , University of British Columbia , Vancouver , British Columbia , Canada.,b British Columbia Centre on Substance Use, British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital , Vancouver , British Columbia , Canada
| | - Kanna Hayashi PhD
- b British Columbia Centre on Substance Use, British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital , Vancouver , British Columbia , Canada.,d Faculty of Health Sciences , Simon Fraser University , Burnaby , British Columbia , Canada
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Norton BL, Akiyama MJ, Zamor PJ, Litwin AH. Treatment of Chronic Hepatitis C in Patients Receiving Opioid Agonist Therapy: A Review of Best Practice. Infect Dis Clin North Am 2018; 32:347-370. [PMID: 29778260 PMCID: PMC6022838 DOI: 10.1016/j.idc.2018.02.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Injection drug use is the most common transmission route for hepatitis C. High rates of infection are observed among individuals on opioid agonist therapy. Although people who inject drugs carry the highest burden, few have initiated treatment. We present a comprehensive review of the evidence on the efficacy of HCV medications, drug-drug interactions, and barriers to and models of care. Studies have demonstrated comparable efficacy for individuals who are on opioid agonist therapy compared with those who are not. We propose that a strategy of treatment and cure-as-prevention is imperative in this population to curb the hepatitis C epidemic.
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Affiliation(s)
- Brianna L Norton
- Division of General Internal Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, 3300 Kossuth Avenue, Bronx, NY 10467, USA.
| | - Matthew J Akiyama
- Division of General Internal Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, 3300 Kossuth Avenue, Bronx, NY 10467, USA
| | - Philippe J Zamor
- Division of Hepatology, Carolinas Healthcare Systems, 1025 Morehead Medical Drive, Suite 600, Charlotte, NC 28204, USA
| | - Alain H Litwin
- Division of General Internal Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, 3300 Kossuth Avenue, Bronx, NY 10467, USA
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Hepatitis C care continuum and associated barriers among people who inject drugs in Chennai, India. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2018; 57:51-60. [PMID: 29679811 DOI: 10.1016/j.drugpo.2018.03.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 03/05/2018] [Accepted: 03/19/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND Little is known regarding barriers to hepatitis C virus (HCV) treatment among people who inject drugs (PWID) in low-resource settings, particularly in the era of direct-acting antiviral therapies. METHODS Between March, 2015-August, 2016, a cross-sectional survey was administered to community-based PWID in Chennai, India to examine the HCV care continuum and associated barriers. Adjusted prevalence ratios (APR) were estimated by multivariable Poisson regression with robust variance. RESULTS All participants were male (n = 541); 152 participants had HCV mono-infection and 61 participants had HIV/HCV co-infection. Only one HCV mono-infected and one HIV/HCV co-infected participant was linked to HCV care. Overall, there was moderate knowledge of HCV disease but poor knowledge of HCV treatment. Higher total knowledge scores were negatively associated with HIV/HCV co-infection (vs. HCV mono-infection), though this was not statistically significant in adjusted analysis (APR = 0.71 [95%CI = 0.47-1.06]). Participants ≥45 years (APR = 0.73 [95%CI = 0.58-0.92]) and participants with HIV/HCV co-infection (APR = 0.64 [95%CI = 0.47-0.87]) were less willing to take weekly interferon injections for 12 weeks. Willingness to undergo HCV treatment improved with decreasing duration of therapy, higher perceived efficacy, and use of pills vs. interferon, though willingness to use interferon improved with decreasing duration of therapy. Most participants preferred daily visits to a clinic for HCV treatment versus receiving a month's supply. Participants ≥45 years (vs. <45 years; APR = 0.70 [95%CI = 0.56-0.88]) and participants with HIV/HCV co-infection (APR = 0.75 [95%CI = 0.57-0.98]) were less likely to intend on seeking HCV care. Common reasons for not having already seen a provider for HCV treatment differed by HIV status, and included low perceived need for treatment (HCV-mono-infected), competing money/health priorities and costs/fears about treatment (HIV/HCV-co-infected). CONCLUSION Residual gaps in HCV knowledge and continuing negative perceptions related to interferon-based therapy highlight the need to scale-up educational initiatives. Readiness for HCV treatment was particularly low among HIV/HCV co-infected and older PWID, emphasizing the importance of tailored treatment strategies.
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Murdoch B, Caulfield T. Doing Research with Vulnerable Populations: The Case of Intravenous Drug Users. BIOÉTHIQUEONLINE 2018. [DOI: 10.7202/1044290ar] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This review article considers ethical concerns when doing research on potentially vulnerable people who inject drugs (PWID) in a Canadian context. The Tri-Council Policy Statement: Ethical Conduct for Research Involving Humans broadly addresses many of the traditional ethical principles of research on vulnerable persons, but does so at the cost of clarity and precision. Vulnerability is contextual rather than absolute. When doing research with vulnerable persons, informed consent should be obtained from an independent person, and comprehension should be checked using questioning. Participants can be vulnerable due to many factors, including addiction, chronic disease, socioeconomic and racial status, and lack of education. The ability of PWID to give informed consent can be compromised by undue influence or intoxication, but existing research shows that neither the mode nor the magnitude of compensation has a significant effect on new rates of drug use. Compensation can also help dispel the therapeutic misconception. Intoxication rather than undue influence is the main concern when obtaining informed consent from PWID. The stigmatization of PWID as incapable of consent should be avoided. Paternalistic exclusion from research can harm PWID and exacerbate their vulnerability by reducing our knowledge of and ability to specifically treat them. As such, we must collect better data about the effects of research ethics policies. Studies to this effect should focus on experiences, perspectives and needs of potentially vulnerable research participants. Research ethics boards in Canada should adopt an evidence-based approach when applying discretionary power to proposals for clinical research.
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Affiliation(s)
- Blake Murdoch
- Health Law Institute, Faculty of Law, University of Alberta, Edmonton, Canada
| | - Timothy Caulfield
- Health Law Institute, Faculty of Law, University of Alberta, Edmonton, Canada
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Saeed S, Strumpf EC, Moodie EE, Young J, Nitulescu R, Cox J, Wong A, Walmsely S, Cooper C, Vachon ML, Martel-Laferriere V, Hull M, Conway B, Klein MB. Disparities in direct acting antivirals uptake in HIV-hepatitis C co-infected populations in Canada. J Int AIDS Soc 2018; 20. [PMID: 29116684 PMCID: PMC5810331 DOI: 10.1002/jia2.25013] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 09/25/2017] [Indexed: 12/27/2022] Open
Abstract
Background Direct acting antivirals (DAAs) have revolutionized hepatitis C (HCV) treatment with >90% cure rates even in real‐world studies, giving hope that HCV can be eliminated. However, for DAAs to have a population‐level impact on the burden of HCV disease, treatment uptake needs to be expanded. We investigated temporal trends in HCV treatment uptake and evaluated factors associated with second‐generation DAA initiation and efficacy among key HIV‐HCV co‐infected populations in Canada. Methods The Canadian HIV‐HCV Co‐Infection Cohort Study prospectively follows 1699 participants from 18 centres. Among HCV RNA+ participants, we determined the incidence of HCV treatment initiation per year overall and by key populations between 2007 and 2015. Key populations were based on World Health Organization (WHO) guidelines including: people who actively inject drugs (PWID) (reporting injection drug use, last 6 months); Indigenous people; women and men who have sex with men (MSM). Multivariate Cox models were used to estimate adjusted hazard ratios (aHR) and 2‐year probability of initiating second‐generation DAAs for each of the key populations. Results Overall, HCV treatment initiation rates increased from 8 (95% CI, 6–11) /100 person‐years in 2013 to 28 (95% CI, 23–33) /100 person‐years in 2015. Among 911 HCV RNA + participants, there were 202 second‐generation DAA initiations (93% with interferon‐free regimens). After adjustment (aHR, 95% CI), active PWID (0.60, 0.38–0.94 compared to people not injecting drugs) and more generally, people with lower income (<$18 000 CAD/year) (0.50, 0.35, 0.71) were less likely to initiate treatment. Conversely, MSM were more likely to initiate 1.95 (1.33, 2.86) compared to heterosexual men. In our cohort, the population profile with the lowest 2‐year probability of initiating DAAs was Indigenous, women who inject drugs (5%, 95% CI 3–8%). Not having any of these risk factors resulted in a 35% (95% CI 32–38%) probability of initiating DAA treatment. Sustained virologic response (SVR) rates were >82% in all key populations. Conclusion While treatment uptake has increased with the availability of second‐generation DAAs, marginalized populations, already engaged in care, are still failing to access treatment. Targeted strategies to address barriers are needed to avoid further health inequities and to maximize the public health impact of DAAs.
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Affiliation(s)
- Sahar Saeed
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada.,Division of Infectious Diseases/Chronic Viral Illness Service, Department of Medicine, Glen site, McGill University Health Centre, Montreal, QC, Canada
| | - Erin C Strumpf
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada.,Department of Economics, McGill University, Montreal, QC, Canada
| | - Erica Em Moodie
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada
| | - Jim Young
- Division of Infectious Diseases/Chronic Viral Illness Service, Department of Medicine, Glen site, McGill University Health Centre, Montreal, QC, Canada
| | - Roy Nitulescu
- Division of Infectious Diseases/Chronic Viral Illness Service, Department of Medicine, Glen site, McGill University Health Centre, Montreal, QC, Canada
| | - Joseph Cox
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada.,Division of Infectious Diseases/Chronic Viral Illness Service, Department of Medicine, Glen site, McGill University Health Centre, Montreal, QC, Canada
| | | | - Sharon Walmsely
- University Health Network, Toronto, ON, Canada.,CIHR Canadian HIV Trials Network, Vancouver, BC, Canada
| | - Curtis Cooper
- Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | | | | | - Mark Hull
- Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, BC, Canada
| | - Brian Conway
- Vancouver Infectious Diseases Centre, Vancouver, BC, Canada
| | - Marina B Klein
- Division of Infectious Diseases/Chronic Viral Illness Service, Department of Medicine, Glen site, McGill University Health Centre, Montreal, QC, Canada.,CIHR Canadian HIV Trials Network, Vancouver, BC, Canada
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Boodram B, Hotton AL, Shekhtman L, Gutfraind A, Dahari H. High-Risk Geographic Mobility Patterns among Young Urban and Suburban Persons who Inject Drugs and their Injection Network Members. J Urban Health 2018; 95:71-82. [PMID: 28875410 PMCID: PMC5862693 DOI: 10.1007/s11524-017-0185-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Young people in the USA who inject drugs, particularly those at a risk of residence instability, experience the highest incidence of hepatitis C (HCV) infections. This study examined associations between geographic mobility patterns and sociodemographic, behavioral, and social network characteristics of 164 young (ages 18-30) persons who inject drugs (PWID). We identified a potential bridge sub-population who reported residence in both urban and suburban areas in the past year (crossover transients) and higher-risk behaviors (receptive syringe sharing, multiple sex partners) compared to their residentially localized counterparts. Because they link suburban and urban networks, crossover transients may facilitate transmission of HIV and HCV between higher and lower prevalence areas. Interventions should address risk associated with residential instability, particularly among PWID who travel between urban and suburban areas.
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Affiliation(s)
- Basmattee Boodram
- Division of Epidemiology and Biostatistics, University of Illinois Chicago School of Public Health, 1603 W. Taylor St, Chicago, IL, 60612, USA.
| | - Anna L Hotton
- Division of Epidemiology and Biostatistics, University of Illinois Chicago School of Public Health, 1603 W. Taylor St, Chicago, IL, 60612, USA
| | - Louis Shekhtman
- The Program for Experimental & Theoretical Modeling, Division of Hepatology, Loyola University Medical Center, Maywood, IL, USA.,Department of Physics, Bar-Ilan University, Ramat Gan, Israel
| | - Alexander Gutfraind
- The Program for Experimental & Theoretical Modeling, Division of Hepatology, Loyola University Medical Center, Maywood, IL, USA
| | - Harel Dahari
- The Program for Experimental & Theoretical Modeling, Division of Hepatology, Loyola University Medical Center, Maywood, IL, USA
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Stephens DB, Young AM, Havens JR. Healthcare contact and treatment uptake following hepatitis C virus screening and counseling among rural Appalachian people who use drugs. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2017; 47:86-94. [PMID: 28648353 PMCID: PMC5592138 DOI: 10.1016/j.drugpo.2017.05.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 05/04/2017] [Accepted: 05/22/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND Hepatitis C virus (HCV) remains a major contributor to morbidity and mortality worldwide. Since 2009, Kentucky has led the United States in cases of acute HCV, driven largely by injection drug use in rural areas. Improved treatment regimens hold promise of mitigating the impact and transmission of HCV, but numerous barriers obstruct people who inject drugs (PWID) from receiving care, particularly in medically underserved settings. METHODS 503 rural people who use drugs were recruited using respondent-driven sampling and received HCV screening and post-test counseling. Presence of HCV antibodies was assessed using enzyme immunoassay of dried blood samples. Sociodemographic and behavioral data were collected using computer-based questionnaires. Predictors of contacting a healthcare provider for follow-up following HCV-positive serotest and counseling were determined using discrete-time survival analysis. RESULTS 150 (59%) of 254 participants reported contacting a healthcare provider within 18 months of positive serotest and counseling; the highest probability occurred within six months of serotesting. 35 participants (14%) reported they were seeking treatment, and 21 (8%) reported receiving treatment. In multivariate time-dependent modeling, health insurance, internet access, prior substance use treatment, meeting DSM-IV criteria for generalized anxiety disorder, and recent marijuana use increased the odds of making contact for follow-up. Participants meeting criteria for major depressive disorder and reporting prior methadone use, whether legal or illegal, were less likely to contact a provider. CONCLUSION While only 8% received treatment after HCV-positive screening, contacting a healthcare provider was frequent in this sample of rural PWID, suggesting that the major barriers to care are likely further downstream. These findings offer insight into the determinants of engaging the cascade of medical treatment for HCV and ultimately, treatment-as-prevention. Further study and increased resources to support integrated interventions with effectiveness in other settings are recommended to mitigate the impact of HCV in this resource-deprived setting.
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Affiliation(s)
- Dustin B Stephens
- University of Kentucky College of Medicine, Department of Behavioral Science, 845 Angliana Ave., Lexington, KY 40508, USA.
| | - April M Young
- University of Kentucky College of Public Health, Department of Epidemiology, 111 Washington Avenue, Office 211C, Lexington, KY 40536, USA; University of Kentucky College of Medicine, Department of Behavioral Science, Center on Drug and Alcohol Research, 845 Angliana Ave., Lexington, KY 40508, USA.
| | - Jennifer R Havens
- University of Kentucky College of Medicine, Department of Behavioral Science, Center on Drug and Alcohol Research, 845 Angliana Ave., Lexington, KY 40508, USA.
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Marshall AD, Grebely J, Dore GJ, Treloar C. ‘I didn’t want to let it go too far.’ The decisions and experiences of people who inject drugs who received a liver disease assessment as part of a liver health promotion campaign: The LiveRLife study. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2017; 47:153-160. [DOI: 10.1016/j.drugpo.2017.06.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 05/19/2017] [Accepted: 06/05/2017] [Indexed: 12/12/2022]
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Estimating the cascade of hepatitis C testing, care and treatment among people who inject drugs in Australia. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2017; 47:77-85. [DOI: 10.1016/j.drugpo.2017.05.022] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 04/04/2017] [Accepted: 05/05/2017] [Indexed: 01/16/2023]
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Bajis S, Dore GJ, Hajarizadeh B, Cunningham EB, Maher L, Grebely J. Interventions to enhance testing, linkage to care and treatment uptake for hepatitis C virus infection among people who inject drugs: A systematic review. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2017; 47:34-46. [DOI: 10.1016/j.drugpo.2017.07.002] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 06/17/2017] [Accepted: 07/10/2017] [Indexed: 12/26/2022]
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