Related Experiment Video
Updated: May 17, 2026

An Affordable HIV-1 Drug Resistance Monitoring Method for Resource Limited Settings
Published on: March 30, 2014
Factors associated with HCV antiviral treatment uptake among participants of a community-based HCV programme for
A Charlebois1, L Lee, E Cooper
1Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada.
Insights
Hepatitis C virus (HCV) treatment uptake improved in marginalized substance users through community health services. Stable housing was linked to treatment initiation, showing effective care models for this population.
Area of Science:
- Hepatology
- Public Health
- Infectious Diseases
Background:
- Hepatitis C virus (HCV) treatment uptake is low among illicit drug users, a key demographic in developed countries.
- Limited evidence exists for HCV treatment models in substance users not in methadone maintenance programs.
- Marginalized populations with substance use and mental health comorbidities present unique challenges for HCV care.
Purpose of the Study:
- To identify factors associated with hepatitis C virus (HCV) antiviral treatment uptake.
- To evaluate the effectiveness of integrated, community-based health services for HCV treatment in a marginalized population.
- To assess treatment outcomes and associated factors in individuals with high rates of crack cocaine use.
Main Methods:
- Retrospective cohort study of 129 individuals in psycho-educational support groups and community health services.
- Analysis of factors influencing HCV antiviral treatment initiation and sustained virologic response (SVR).
- Assessment of healthcare access, immunization rates, and treatment outcomes based on drug use and housing status.
Main Results:
- Group participation significantly improved access to HCV specialists and hepatitis A/B immunization.
- The program achieved high SVR rates: 91% for HCV genotypes 2/3 and 54% for genotype 1.
- Stable housing was independently associated with initiating HCV treatment; no significant difference in SVR based on recent drug use.
Conclusions:
- Integrated, community-based health services can effectively improve HCV treatment uptake and outcomes in marginalized substance users.
- Addressing social determinants like stable housing is crucial for facilitating HCV treatment initiation.
- This model demonstrates successful HCV management in a population with complex comorbidities and substance use challenges.
Abstract:
While the majority of cases of hepatitis C virus (HCV) in developed countries occur among illicit drug users, HCV antiviral treatment uptake is poor in this population. Several studies have shown that patients can successfully be treated for HCV in the context of methadone maintenance programmes, but little evidence exists evaluating HCV treatment models for substance users where methadone maintenance is not indicated. This retrospective cohort study involved 129 persons participating in psycho-educational support groups and integrated, interprofessional, community-based health services focused on the treatment for HCV among marginalized populations with high rates of crack cocaine use and mental health comorbidities. We sought to identify the factors associated with antiviral treatment uptake. Group participation improved access to health care. While 19% had previously seen an HCV specialist prior to group initiation, 59% saw an HCV specialist during the group. Half of the participants were nonimmune to hepatitis A or B at baseline, and 80% of these patients received immunization through the programme. The programme treated 24 patients with pegylated interferon and ribavirin and achieved a sustained virologic response (SVR) rate of 91% for genotype 2 or 3 and 54% for genotype 1. Stable housing was independently associated with initiation of treatment, and there was a nonsignificant trend towards lower rates of treatment initiation among women. SVR rates for those who had used crack or injection drugs in the month prior to joining the programme did not differ significantly from those who had abstained.
Related Concept Videos
Hepatitis
Viral Hepatitis I: Introduction
Retrovirus Life Cycles
Factors Influencing Drug Absorption: Disease States and Pharmacology
Substances such as alcohol and specific drugs, including antineoplastics, can also negatively impact drug absorption. For instance,...
Hepatic Drug Excretion: Influencing Factors
Factors Affecting Drug Response: Overview
