Showing posts with label People who inject drugs (PWID). Show all posts
Showing posts with label People who inject drugs (PWID). Show all posts

May 16, 2014

Methadone programs can be key in educating, treating patients with hepatitis C virus infection

1400253689590

Research by Andrew Talal shows that people who inject drugs want to be educated about hepatitis C and are willing to be treated.

More effective, new medications for HCV infection with fewer side effects also are causing a shift in patients’ attitudes

By Ellen Goldbaum

Release Date: May 16, 2014

People who inject drugs and are enrolled in a drug treatment program are receptive to education about, and treatment for, hepatitis C virus, according to a study by researchers at several institutions, including the University at Buffalo.

That finding, published online this week in the Journal of Addiction Medicine will be welcome news to health care providers. The paper notes that injection drug use is a primary mode of infection, making for an HCV infection prevalence as high as 80 percent among people who inject drugs.

"One of the most important findings of this work is that people who inject drugs do want to be educated about the disease and that education is associated with willingness to be treated," says senior author Andrew H. Talal, MD, professor of medicine in the Division of Gastroenterology, Hepatology and Nutrition at UB and adjunct associate professor of medicine at Weill Cornell Medical College. First author is Marija Zeremski, PhD, senior research associate in medicine at Weill Cornell Medical College and research assistant professor of medicine at UB.

Talal and colleagues previously demonstrated that treatment of addiction significantly enhances the ability of people who use drugs to complete HCV therapy.

"These new findings support the premise that addiction-treatment facilities can help provide sustained HCV treatment for this population," Talal says. "These facilities have the added advantage of being able to link HCV care to drug treatment, allowing for closer patient evaluation, which will likely lead to improved adherence to treatment regimens."

HCV infection often is asymptomatic, but 75 to 80 percent of those infected will develop chronic infection that can progress to liver cirrhosis and/or liver cancer, potentially requiring liver transplantation as a life-saving intervention. However, in order to be considered for a liver transplant, people who use drugs must remain "clean" for at least six months.

The study was based on a survey of 320 patients enrolled in a New York City-based methadone treatment program (START Treatment and Recovery Centers). Nearly half of them reported that they had tested positive for HCV infection.

Seventy-eight percent of respondents expressed willingness to participate in HCV-related education and to receive treatment for HCV. More than half of those surveyed correctly responded to at least five of seven questions assessing their knowledge about HCV.

"People who inject drugs have always wanted to be treated for hepatitis C, but there have been a variety of barriers at the patient, provider and institutional levels," says Talal. "Most importantly, there has been a lack of education about the disease, a fear of side effects of interferon, discomfort in conventional health care venues and a lack of awareness of the status of the infection."

In some cases, the percentage of HCV-infected people who use drugs that show up for HCV-related medical appointments is as low as 10 percent, according to Talal.

In the current research, patients cited fear of side effects from interferon, which remains as part of the standard treatment regimen for genotype 1 infection, as a key barrier to their willingness to accept HCV treatment. Interferon can cause multiple side effects, ranging from fatigue, fever, nausea, anorexia, muscle pain and hair loss, to insomnia, depression and irritability. In addition, interferon-based therapies are only effective in eliminating infection in half of those who take it.

"A major change in the attitudes of people who use drugs is due to knowledge about greatly improved treatment efficacy and the ability to provide HCV treatment at the same site as the substance abuse treatment," says Talal.

Talal adds that the New York State law mandating that all individuals born between 1945 and 1965 be offered HCV screening is increasing the number of people diagnosed with the infection, thereby also making them more receptive to HCV education and treatment.

This study, funded by the Viral Hepatitis Action Coalition and performed in collaboration with the Centers for Disease Control and Prevention, documents the initial phase of a project called Prevention, Evaluation and Treatment of Hepatitis C in Opiate Agonist Treatment (PET-C). Led by Talal, the project's goal is to assess how telemedicine can be used to evaluate a model of HCV treatment for people who inject drugs and are enrolled in a drug treatment program.

Talal conducts research on HCV in UB's Clinical and Translational Research Center and he sees patients as a physician with UBMD, the practice plan of the UB School of Medicine and Biomedical Sciences. He previously served on the advisory board for Abbott Molecular, received support from Gilead Sciences and disclosed a prior relationship with Vertex Pharmaceuticals, all of which helped sponsor the study.

Media Contact Information
Ellen Goldbaum Senior Editor, Medicine
Tel: 716-645-4605
goldbaum@buffalo.edu
Twitter: @egoldbaum

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February 17, 2014

Researchers look to reduce Hep C infections with "Staying safe intervention" for injecting drug users

February 11, 2014
N-195 2013-14

Despite a number of social/behavioral intervention and educational programs, the spread of hepatitis C (HCV) in people who inject drugs (PWIDs) remains a chronic problem. Now, researchers affiliated with New York University’s Center for Drug Use and HIV Research (CDUHR) are focusing on intervention strategies that highlight the lesser-known dangers of HCV transmission through the sharing of other injection equipment such as cookers, filters, drug-dilution water and water containers.

Their article, “The Staying Safe Intervention: Training People Who Inject Drugs in Strategies to Avoid Injection-Related HCV and HIV Infection,” published in the 2014 March-April issue ofAIDS Education and Prevention, explores the feasibility and efficacy of their “Staying Safe Intervention,” a strengths-based social/behavioral intervention conducted with small groups of PWID, designed to facilitate long-term prevention of HIV and HCV.

“The Staying Safe Intervention seeks to reduce injection risk by intervening upstream in the causal chain of risk behaviors by modeling, training in, and motivating the use of strategies and practices of long-term risk-avoidance,” said Dr. Pedro Mateu-Gelabert, the study’s Principal Investigator, at the NYC-based National Development Research Institutes.

Dr. Mateu-Gelabert and his NDRI-CDUHR team evaluated 68 street-recruited injectors from the Lower East Side of Manhattan. The objective was to reduce participants’ injection risk behaviors, empower and motivate behavioral change, and teach tactics to help reduce drug intake.  The current program was built upon findings of their 2005 study, “Staying Safe,” which looked at the behaviors and strategies of individuals who had injected drugs for long periods of time (8–15 years) but had not contracted HIV or HCV.

“The Staying Safe Intervention does not focus exclusively on the moment of injection,” explains Dr. Mateu-Gelabert, “but on the upstream determinants of risk behavior, such as stigma, risk networks, social support and income, while encouraging injectors to plan ahead in order to better manage the drug-related risk contexts they are likely to face.”

The social/behavioral intervention showed substantial improvement in motivation and planning to avoid injection-related risks, increased use of stigma management strategies, and decreases in drug withdrawal episodes (known to reduce safe injection practices) and number of weekly injections. The research team also noted that participants in the study have been spreading the word on safer drug use within their communities.

The Centers for Disease Control and Prevention estimate that not only do nine percent of new HIV infections originate from drug use, but 18 percent of PWID are HIV positive and up to 70-77 percent of PWIDs have HCV.

“Given the substantial reductions observed among Staying Safe participants in key injection-related risk behaviors associated with HCV transmission, the Staying Safe Intervention may have the potential to contribute to sufficient additional risk reduction to help address the seemingly intractable rates of HCV transmission among PWID,” said Dr. Mateu-Gelabert.

Currently, Dr. Mateu-Gelabert’s team is researching HCV and HIV risk associated with nonmedical prescription opioid use. Future research will evaluate the effectiveness of the Staying Safe Intervention in preventing HIV and hepatitis C infection among young prescription opioid users who have transitioned to heroin injection.  “The goal is to implement the Staying Safe approach with this new generation of young injectors, so they do not get infected with HIV or HCV,” said Dr. Guarino, a Co-investigator in the project.

The project described was supported by Award Numbers R21DA026328, R01DA019383, R01DA031597, and R01DA035146 from the National Institute on Drug Abuse. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institute on Drug Abuse or the National Institutes of Health.

The research team members are: P. Mateu-Gelabert, M.V Gwadz, H. Guarino, M. Sandoval, C.M Cleland, A. Jordan, H. Hagan, H. Lune, S.R Friedman. Affiliations: National Development Research Institutes Inc. (PMG,HR,MS,SRF), New York, NY USA; College of Nursing (MVG,CMC,AJ,HH), New York University; Hunter College (SRF), City University of New York, NY USA.

About CDUHR

CDUHR, funded by the National Institute on Drug Abuse, is the first center for the socio-behavioral study of substance use and HIV in the United States. The Center is dedicated to increasing the understanding of the substance use-HIV/AIDS epidemic, particularly among individuals in high-risk contexts. The Center's theme is "Discovery to Implementation & Back: Research Translation for the HIV/Substance Use Epidemic." The Center facilitates the development of timely new research efforts, enhances implementation of funded projects and disseminates information to researchers, service providers and policy makers.

About New York University College of Nursing
NYU College of Nursing is a global leader in nursing education, research, and practice. It offers a Bachelor of Science in Nursing, a Master of Arts and Post-Master’s Certificate Programs, a Doctor of Philosophy in Research Theory and Development, and a Doctor of Nursing Practice degree.  For more information, visit www.nyu.edu/nursing.

This Press Release is in the following Topics:
College of Nursing, NYUToday-feature

Type: Press Release

Press Contact: Christopher James | (212) 998-6876

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February 7, 2014

Sustained Drug Use Changes After Hepatitis C Screening and Counseling Among Recently Infected Persons Who Inject Drugs: A Longitudinal Study

Clin Infect Dis. 2014 Feb 5. [Epub ahead of print]

Bruneau J, Zang G, Abrahamowicz M, Jutras-Aswad D, Daniel M, Roy E.

Abstract

Background. Notification of hepatitis C virus (HCV) positive status is known to have short-term impacts on subsequent alcohol, drug use and injection behaviors among persons who inject drugs (PWID). It remains to be established whether postscreening behavioral changes extend over time for PWID and whether screening test notification has behavioral impacts among HCV-negative PWID. This study sought to longitudinally assess substance use and injection behaviors after HCV status notification among HCV seroconverters and HCV-negative PWID. Methods. Initially HCV-seronegative PWID (n = 208) were followed prospectively between 2004 and 2011 in Montreal, Canada. Semiannual screening visits included blood sampling and an interview-administered questionnaire assessing substance use and injection behaviors. Multivariable generalized estimating equation analyses were conducted to assess substance use and behavior changes over time and compare changes between HCV seroconverters and HCV-seronegative participants while adjusting for baseline characteristics. Results. Of the 208 participants (83% male; mean age, 34.7 years, mean follow-up time, 39 months), 69 (33.2%) seroconverted to HCV. A linear decrease in syringe sharing behavior was observed over time after HCV and status notification, whereas a 10% decrease for each additional 3 months of follow-up was observed for injection cocaine and heroin use among HCV seroconverters but not among HCV-seronegative PWID (P < .05). No significant changes were observed in alcohol use. Conclusions. Our results indicate that notification of HCV-positive status is associated with reduced injection drug use among seroconverters. Among PWID deemed seronegative after screening, there is no sustained trend for change in risk behavior.

KEYWORDS: behavior change, hepatitis C, injection drug use, screening

PMID: 24363333 [PubMed - as supplied by publisher]

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February 5, 2014

Injection behaviors among injection drug users in treatment: The role of hepatitis C awareness - Does HCV+ Awareness Among IDUs Reduce Needle Sharing

Provided by NATAP

Download the PDF here

Does HCV+ Awareness Among IDUs Reduce Needle Sharing? This study found NO - ."In adjusted analysis (Table 2), recent syringe/needle sharing was more likely among those who reported they were HCV-positive compared with those who were HCV negative/unaware (aOR 2.37 [95% CI 1.15, 4.88]), and among IDUs obtaining needles from the street, using any opioids, marijuana, or injected crack cocaine; sharing was less likely among males and participants with some college education......More HCV-positive IDUs reported recent syringe/needle sharing compared with those with HCV negative/unknown status (44.6% vs. 38.5%, p = .131), though this was not statistically significant"

from Jules: with the advent & revolution of new HCV oral & interferon-free therapy it will be important to provide education to at-risk patients about the risks for-re-infection with HCV. It is important to provide treatment to IDUs as persons but also for society. All too often now treatment for IDUs is withheld for a number of reasons including because IDUs are at risk for continuing risky behavior, sharing unclean needles & getting re-infected. Instead treatment for IDUs should be viewed as important for the patient, for prevention, ad for society & treatment should be viewed as an opportunity to provide education about preventing re-infection, why & how the patient should not be re-infected. Often this means addressing the patient's risky behavior, which could be sharing used/unclean syringes for the IDU or continued risky sexual & drug behavior for MSM. In recent studies in NYC & in London re-infection was cited among MSM due to continued unsafe drug & sex behavior, in fact re-infection was reported to occur 2-3 times after successful treatment for some individuals. In recent studies re-infection among IDUs has been found often. With treatment & cure of HCV comes a responsibility that these at-risk individuals, IDUs or a history of IDU, are educated not to be re-infected. Resources are scarce and should not be wasted particularly in the developing & undeveloped world but also in Europe, the USA & the Western world, its possible that retreatment may be denied by government or payers.

High incidence of hepatitis C virus reinfection within a cohort of injecting drug users - (10/13/13)

HCV Reinfection - (10/11/13)

HCV superinfection and reinfection - Review - (10/10/13)

HCV reinfection incidence and treatment outcome among HIV-positive MSM in London - (06/17/13)

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Injection behaviors among injection drug users in treatment: The role of hepatitis C awareness

Highlights

->38.5% of 244 IDUs seeking treatment reported sharing needles/syringes. ->Only 46.9% of IDUs always used a sterile needle/syringe. ->37.7% of IDUs reported being HCV positive. ->HCV awareness was associated with increased risky injection behaviors. ->New HCV prevention interventions are needed for IDUs seeking treatment.

"one's belief about one's HCV status is conceptually more closely related to injection behaviors than biologically confirmed HCV status......IDUs may adopt more of a fatalistic attitude toward risky injection practices. Indeed, a recent synthesis of qualitative studies of HCV risk among IDUs identified risk ubiquity as a common theme, supporting a perception of HCV as "a risk accepted rather than avoided.....The observed multivariable association between knowledge of HCV status and syringe/needle sharing may reflect overall greater drug use severity among those who become HCV-infected rather than a causal pathway toward increased risky behaviors. Regardless, the association highlights the role of HCV awareness as a marker for IDUs in particular need of harm reduction interventions.....The observed association between HCV-awareness and increased needle/syringe sharing may reflect a complex cluster of characteristics among HCV-aware IDUs in this cross-sectional study. Our data support that HCV awareness is likely a marker for IDUs with greater addiction severity (e.g., increased heroin injection and methadone maintenance among HCV-aware), addiction duration (older age among HCV-aware), and increased opportunities for HCV testing (e.g., increased needle exchange program use among HCV-aware, many of which offer HCV testing)."

"Risky injection practices persist among IDUs, with rates in the current study consistent with those of other recent studies (Booth et al., 2011 and Centers for Disease Control and Prevention, 2009) and may partially explain persistently high HCV incidence among IDUs.......In adjusted analysis (Table 2), recent syringe/needle sharing was more likely among those who reported they were HCV-positive compared with those who were HCV negative/unaware (aOR 2.37 [95% CI 1.15, 4.88]), and among IDUs obtaining needles from the street, using any opioids, marijuana, or injected crack cocaine; sharing was less likely among males and participants with some college education......More HCV-positive IDUs reported recent syringe/needle sharing compared with those with HCV negative/unknown status (44.6% vs. 38.5%, p = .131), though this was not statistically significant......The majority of IDUs in the present study obtained needles from safe sources, including pharmacies and syringe exchange programs, as corroborated in surveys of IDUs in other U.S. cities with policies that increase availability of sterile needles and syringes......Despite this, fewer than half of IDUs reported always using a clean needle or consistently cleaning needles, indicating that needle re-use and lack of needle cleaning are common. Even among the minority of IDUs reporting consistent needle cleaning, sterilization techniques other than use of bleach were frequently employed, suggesting that renewed efforts are needed to promote harm reduction techniques among IDUs.......Participants who reported they were HCV positive differed in several important behaviors compared with their counterparts. HCV positive IDUs more frequently exhibited harm reduction behaviors such as obtaining needles from a syringe exchange program, cleaning needles with bleach, and avoiding drinking alcohol to intoxication, suggesting that awareness of HCV status may confer increased adoption of some protective behaviors. HCV positive IDUs, however, were also more likely to inject heroin and, in multivariable analysis, to share needles."

"This finding contrasts with a sero-survey of street-recruited IDUs in Denver from 1998 to 1999, where those with a previous HCV positive test reported less receptive syringe/needle sharing, sharing of drug paraphernalia, and safer injecting practices compared with those with unknown status who tested HCV-positive during the study (Kwiatkowski et al., 2002). It is possible that in populations where higher proportions of IDUs are aware they are HCV-positive, IDUs may adopt more of a fatalistic attitude toward risky injection practices. Indeed, a recent synthesis of qualitative studies of HCV risk among IDUs identified risk ubiquity as a common theme, supporting a perception of HCV as "a risk accepted rather than avoided" (Rhodes, Singer, Bourgois, Friedman, & Strathdee, 2005). This is consistent with findings from a multicenter study of Swedish IDUs, in which 74% of those HCV-aware shared needles compared with 68% of those with unknown status (Norden et al., 2009)."

Author's CONCLUSIONS: This study highlights the need for broadly implemented HCV prevention interventions for all IDUs seeking addiction treatment, and suggests such interventions might particularly decrease transmission behaviors by those aware of their HCV infection and prevent HCV infection in those HCV-negative/unaware. Research which prospectively studies the effect of HCV testing and notification on risk behavior could help further clarify the association between HCV awareness and risk behaviors. Interventions that could improve services for IDUs include those that explicitly and repeatedly educate IDUs about safer injection practices and the treatability of HCV, and those that integrate HCV testing and treatment with addiction treatment services. As HCV screening and treatment options advance, community based treatment programs have a greater opportunity to play a central role in reducing HCV transmission and engaging HCV-infected IDUs in treatment.

-------------------------------

Injection behaviors among injection drug users in treatment: The role of hepatitis C awareness

Addictive Behaviors April 2012

P. Todd Korthuis a,, Daniel J. Feaster b, Zoilyn L. Gomez b, Moupali Das c,d, Susan Tross e, Katharina Wiest f, Antoine Douaihy g, Raul N. Mandler h, James L. Sorensen c, Grant Colfax d, Dennis McCarty a, Stephanie E. Cohen d, Patricia E. Penn i, Diane Lape a, Lisa R. Metsch b
a Department of Medicine and Department of Public Health and Preventive Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA
b Department of Epidemiology and Public Health, University of Miami Miller School of Medicine, 1425 Northwest 10th Ave, 3rd floor, Miami, FL 33136, USA c University of California, San Francisco, 1001 Potero Ave., San Francisco, CA 94110, USA
d San Francisco Department of Public Health, 356 7th St., San Francisco, CA 94103, USA
e HIV Center For Clinical and Behavioral Studies, NYS Psychiatric Institute, 1051 Riverside Drive, New York, NY 10032, USA
f CODA, 1027 East Burnside St., Portland, OR 97214, USA
g University of Pittsburgh School of Medicine, 3811 O'Hara St # 1059, Pittsburgh, PA 15213, USA
h National Institute on Drug Abuse, National Institutes of Health, 6001 Executive Blvd., Bethesda, MD 20892, USA
i La Frontera Arizona, 504 W. 29th St., Tucson, AZ 85713, USA

Abstract

Background

Injection drug use (IDU) is a primary vector for blood-borne infections. Awareness of Hepatitis C virus (HCV) infection status may affect risky injection behaviors. This study determines the prevalence of risky injection practices and examines associations between awareness of positive HCV status and risky injection behaviors.

Methods

We surveyed individuals seeking treatment for substance use at 12 community treatment programs as part of a national HIV screening trial conducted within the National Drug Abuse Treatment Clinical Trials Network. Participants reported socio-demographic characteristics, substance use, risk behaviors, and HCV status. We used multivariable logistic regression to test associations between participant characteristics and syringe/needle sharing.

Results

The 1281 participants included 244 (19.0%) individuals who reported injecting drugs in the past 6 months and 37.7% of IDUs reported being HCV positive. During the six months preceding baseline assessment, the majority of IDUs reported obtaining sterile syringes from pharmacies (51.6%) or syringe exchange programs (25.0%), but fewer than half of IDUs always used a sterile syringe (46.9%). More than one-third (38.5%) shared syringe/needles with another injector in the past 6 months. Awareness of positive HCV vs. negative/unknown status was associated with increased recent syringe/needle sharing (aOR 2.37, 95% CI 1.15, 4.88) in multivariable analysis.

Conclusions

Risky injection behaviors remain prevalent and awareness of HCV infection was associated with increased risky injection behaviors. New approaches are needed to broadly implement HCV prevention interventions for IDUs seeking addiction treatment.

1. Introduction

Injection drug use (IDU) is the primary driver for Hepatitis C virus (HCV) transmission, accounting for the majority of chronic HCV infections in the U.S. (Alter, 1999 and Armstrong et al., 2006). Across multiple U.S. studies, 35-65% of current IDUs report risky injection behaviors such as syringe/needle sharing (Bailey et al., 2007, Booth et al., 1998, Centers for Disease Control and Prevention, 2009 and Golub et al., 2007).

Knowledge of harboring a transmissible infection such as HCV may influence risky behaviors. Prior studies of the effects of HCV-infection awareness on risky behaviors demonstrate mixed results. In a serosurvey of out-of-treatment IDUs, those who reported awareness of HCV-infection engaged in fewer risky behaviors compared with those who were unaware (Kwiatkowski, Fortuin Corsi, & Booth, 2002). HCV-aware IDUs may also "sero-sort," or preferentially engage in risky injection behaviors with others they know to be similarly HCV-infected (Burt, Thiede, & Hagan, 2009). Other studies, however, suggest that HCV awareness is insufficient to change injection risk behaviors (Norden et al., 2009). Little is known about the influence of HCV awareness on IDUs engaged in substance use treatment-information that might improve HCV prevention services in addiction treatment settings.

The purpose of this analysis was to 1) assess the prevalence and correlates of drug use practices among patients presenting for addiction treatment and 2) compare risky behaviors in those reporting HCV-infection with those who reported negative or unknown HCV status.

2. Methods

2.1. Design and setting

The primary study was a National Drug Abuse Treatment Clinical Trials Network (CTN) trial comparing the effectiveness of strategies to increase HIV testing (Metsch et al., in press). Between January and May 2009, the trial randomized 1281 individuals receiving addiction treatment at 12 geographically diverse, community-based addiction treatment programs. After providing informed consent, participants completed an audio computer assisted self interview recording substance use behaviors.

2.2. Participants

Participants receiving addiction treatment were eligible for enrollment if they were 1) ³ 18 years old, 2) reported unknown or negative HIV status, and 3) had not been tested and received results for HIV within the last 12 months. The current analysis was restricted to the 244 participants who reported IDU in the six months preceding the study baseline assessment.

2.3. Measures

Participants were asked about injection risk behaviors over the prior six months using items from Project Inspire (Purcell et al., 2004) and the NIDA Risk Behavior Assessment survey (Needle et al., 1995) including source of syringes, needle cleaning practices, how they cleaned their needles, and recent syringe/needle sharing (the main dependent variable). Participants reported injection and non-injection drug use and drinking alcohol to intoxication in the past 6 months (Colfax et al., 2004).

The independent variable was self-reported HCV infection awareness. Patients were asked, "Have you ever been diagnosed with hepatitis C (yes, no, don't know)?" Because there was no difference in syringe/needle sharing between participants who reported they were HCV-negative and those who did not know their HCV status, we dichotomized this variable as HCV-positive vs.

HCV-negative/unknown. Covariates included age, gender, race/ethnicity, employment, education, court-mandated treatment, opioid replacement treatment, and whether or not the patient had been jailed in the last 6 months.

2.4. Analysis

Descriptive statistics characterized participant socio-demographics, and substance use behaviors. We assessed bivariate and multivariable associations between participant characteristics and any syringe/needle sharing using logistic regression. Variables were included in the multivariable logistic regression model if associated with syringe/needle sharing in univariate analyses (p < .20), or on the basis of a priori hypotheses. Potential interactions were assessed.

3. Results

3.1. Participant characteristics

Of 244 recent IDUs, 60.7% were men, 66.0% white, 14.3% Hispanic, and 10.2% Black race/ethnicity, with a mean age of 39.3 (SD = 11.0) years. Twenty percent were employed, 36.2% had attained at least some college education, 30.3% had been recently incarcerated, 20.1% were receiving court-mandated treatment and 46.7% opioid replacement therapy. Ninety-two IDU (37.7%) reported being positive for HCV, 55 (22.5%) HCV-negative, and 97 (39.8%) unknown HCV status. Compared with those who were HCV negative/unaware, HCV positive IDUs were older (45.3 vs. 35.6 years, p < .001), more likely to be women (52.2% vs. 31.6%, p = .001) or enrolled in opioid replacement programs (68.5% vs. 33.6%, p < .001) and less likely to be recently incarcerated (21.7% vs. 35.5%, p = .023).

The most commonly used substances were injected opioids (71.17%), drinking alcohol to intoxication (70.9%), non-injection opioids (66.4%), marijuana (48.8%), crack cocaine (45.1%), and cocaine (30.7%). The majority of IDUs (81.1%) injected more than one substance at a time. HCV positive IDUs were less likely to drink alcohol to intoxication (57.6% vs. 78.9%, p < .001) but more likely to inject heroin (68.5% vs. 55.3%, p = .041) compared with HCV negative/unaware.

3.2. Injection risk behaviors

More than one third (38.5%) of IDUs reported syringe/needles sharing in the past 6 months (Table 1). IDUs obtained needles mostly from pharmacies, syringe exchange programs, and diabetic supplies. Less than half always used a clean needle. Among IDUs who cleaned their needles, cleaning with bleach was the most common method, but many used more ineffective sterilization methods including soap and water. More HCV-positive IDUs reported recent syringe/needle sharing compared with those with HCV negative/unknown status (44.6% vs. 38.5%, p = .131), though this was not statistically significant. There was no difference in recent syringe/needle sharing between those who reported being HCV negative vs. unknown status (36.4% vs. 34.0%, p = .771). HCV positive IDUs more frequently obtained needles from a syringe exchange program and used bleach if they cleaned needles.

In adjusted analysis (Table 2), recent syringe/needle sharing was more likely among those who reported they were HCV-positive compared with those who were HCV negative/unaware (aOR 2.37 [95% CI 1.15, 4.88]), and among IDUs obtaining needles from the street, using any opioids, marijuana, or injected crack cocaine; sharing was less likely among males and participants with some college education.

4. Discussion

Risky injection practices persist among IDUs, with rates in the current study consistent with those of other recent studies (Booth et al., 2011 and Centers for Disease Control and Prevention, 2009) and may partially explain persistently high HCV incidence among IDUs (Mehta et al., 2011). In a survey of IDUs in 23 U.S. cities from 2005 to 2006, 31.8% of IDUs reported sharing needles (Centers for Disease Control & Prevention, 2009). Among IDUs enrolling in a behavioral intervention trial (2-session HIV/HCV counseling vs. therapeutic alliance vs. treatment as usual) at residential detoxification centers from 2004 to 2006, 61% reported sharing needles, works, or drug solution (Booth et al., 2011). More widespread adoption of interventions demonstrated to reduce risky injection practices, and development of new, more effective interventions, are urgently needed for patients enrolling in community-based treatment programs.

The majority of IDUs in the present study obtained needles from safe sources, including pharmacies and syringe exchange programs, as corroborated in surveys of IDUs in other U.S. cities with policies that increase availability of sterile needles and syringes (Golub et al., 2005 and Khoshnood et al., 2000) - policies that decrease HIV transmission and likely decrease HCV transmission, as well (Des Jarlais et al., 1996 and Des Jarlais et al., 2000). Despite this, fewer than half of IDUs reported always using a clean needle or consistently cleaning needles, indicating that needle re-use and lack of needle cleaning are common. Even among the minority of IDUs reporting consistent needle cleaning, sterilization techniques other than use of bleach were frequently employed, suggesting that renewed efforts are needed to promote harm reduction techniques among IDUs. Interventions that promote needle cleaning such as peer-based (Hawkins et al., 1999 and Rietmeijer et al., 1996), pharmacy-based (Romanelli, Smith, & Pomeroy, 2000), and provider-based (Carlson, Wang, Siegal, & Falck, 1998) interventions, continue to be relevant for IDUs engaged in community-based treatment. At the same time, renewed efforts to increase availability of clean syringe/needles are urgently needed to decrease HCV transmission.

Participants who reported they were HCV positive differed in several important behaviors compared with their counterparts. HCV positive IDUs more frequently exhibited harm reduction behaviors such as obtaining needles from a syringe exchange program, cleaning needles with bleach, and avoiding drinking alcohol to intoxication, suggesting that awareness of HCV status may confer increased adoption of some protective behaviors. HCV positive IDUs, however, were also more likely to inject heroin and, in multivariable analysis, to share needles. The observed association between HCV-awareness and increased needle/syringe sharing may reflect a complex cluster of characteristics among HCV-aware IDUs in this cross-sectional study. Our data support that HCV awareness is likely a marker for IDUs with greater addiction severity (e.g., increased heroin injection and methadone maintenance among HCV-aware), addiction duration (older age among HCV-aware), and increased opportunities for HCV testing (e.g., increased needle exchange program use among HCV-aware, many of which offer HCV testing).

This finding contrasts with a sero-survey of street-recruited IDUs in Denver from 1998 to 1999, where those with a previous HCV positive test reported less receptive syringe/needle sharing, sharing of drug paraphernalia, and safer injecting practices compared with those with unknown status who tested HCV-positive during the study (Kwiatkowski et al., 2002). It is possible that in populations where higher proportions of IDUs are aware they are HCV-positive, IDUs may adopt more of a fatalistic attitude toward risky injection practices. Indeed, a recent synthesis of qualitative studies of HCV risk among IDUs identified risk ubiquity as a common theme, supporting a perception of HCV as "a risk accepted rather than avoided" (Rhodes, Singer, Bourgois, Friedman, & Strathdee, 2005). This is consistent with findings from a multicenter study of Swedish IDUs, in which 74% of those HCV-aware shared needles compared with 68% of those with unknown status (Norden et al., 2009).

The current study confirms the importance of certain demographic and drug use characteristics previously associated with syringe/needle sharing including younger age, female gender, lower educational attainment, and use of opiates, and crack cocaine. While greater addiction severity is associated with riskier injection behaviors, the current study is among the first to identify an association between marijuana use and risky injection behaviors. Marijuana use in IDUs may be a marker of risk-taking personality or chronically decreased motivation to protect oneself, as hypothesized to explain similar findings in a study of Russian IDUs (Walley et al., 2008). Further research is required to assess the nature of this association.

This study has limitations. First, our study population was recruited from individuals seeking or actively engaged in treatment in community-based treatment programs. Findings may not be generalizable to IDUs in other settings. Second, HCV status was assessed by self-report and likely underestimates the actual prevalence of HCV. However, one's belief about one's HCV status is conceptually more closely related to injection behaviors than biologically confirmed HCV status. Third, we were unable to assess sero-sorting in the current study, so increased sharing among HCV may have been with other known HCV-positive IDU, as was observed in one prior study (Burt et al., 2009). Finally, the current study's cross-sectional design limits our ability to infer causality. The observed multivariable association between knowledge of HCV status and syringe/needle sharing may reflect overall greater drug use severity among those who become HCV-infected rather than a causal pathway toward increased risky behaviors. Regardless, the association highlights the role of HCV awareness as a marker for IDUs in particular need of harm reduction interventions.

5. Conclusions

This study highlights the need for broadly implemented HCV prevention interventions for all IDUs seeking addiction treatment, and suggests such interventions might particularly decrease transmission behaviors by those aware of their HCV infection and prevent HCV infection in those HCV-negative/unaware. Research which prospectively studies the effect of HCV testing and notification on risk behavior could help further clarify the association between HCV awareness and risk behaviors. Interventions that could improve services for IDUs include those that explicitly and repeatedly educate IDUs about safer injection practices and the treatability of HCV, and those that integrate HCV testing and treatment with addiction treatment services. As HCV screening and treatment options advance, community based treatment programs have a greater opportunity to play a central role in reducing HCV transmission and engaging HCV-infected IDUs in treatment.

Role of funding source

This work was supported by the National Institute on Drug Abuse which supported the design, distribution, collection and analysis of the clinical trial. The final version of the manuscript was reviewed and approved by the NIDA Clinical Trials Network publications committee.

Source

February 2, 2014

Eradication of hepatitis C infection: The importance of targeting people who inject drugs

Hepatology

Volume 59, Issue 2, pages 366–369, February 2014

Editorial

You have full text access to this OnlineOpen article

Margaret Hellard1,2,3,*, Joseph S. Doyle1,2,3,4, Rachel Sacks-Davis1,3, Alexander J. Thompson5,6, Emma McBryde1,4

Article first published online: 24 DEC 2013

DOI: 10.1002/hep.26623

Copyright © 2013 The Authors. HEPATOLOGYpublished by Wiley on behalf of the American Association for the Study of Liver Diseases.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

Hepatitis C virus (HCV) affects ∼170 million people worldwide and causes significant morbidity and mortality.[1] In high-income countries, people who inject drugs (PWID) are at greatest risk of HCV infection.[2] Until recently HCV eradication seemed unlikely, but recent advances in HCV treatment and improved understanding of the effectiveness of harm-reduction intervention effectiveness give reason for optimism. Current HCV treatments can cure ∼75% of patients and new drugs will further improve effectiveness (over 90% cure) and improve tolerability.[3] If HCV treatment can be delivered effectively to those at highest risk of onward transmission, significant reductions in future HCV cases are possible. The feasibility of disease eradication must be assessed on both scientific criteria (e.g., epidemiological susceptibility, effective and practical intervention available, and demonstrated feasibility of elimination) and political criteria (e.g., burden of disease, cost of intervention).[4] With effective, curative treatment now available, HCV meets these criteria.

Importance of Targeting PWID

To achieve eradication, public health efforts must focus on PWID, the key drivers of HCV transmission. A sustained, multipronged approach could substantially reduce HCV infection in PWID over the next 10-20 years through a focus on HCV treatment as prevention, meaning improved access to more effective and well-tolerated HCV treatment. Other major elements include increasing coverage of opiate substitution therapy (OST), needle and syringe programs (NSPs), and regular HCV screening and counseling.

PWID are highly marginalized, so effective engagement and inclusion in strategy development are critical to HCV eradication. To date, health services have been unsuccessful in channeling PWID into HCV treatment, despite evidence of willingness to be treated[5] and treatment success.[6]

HCV Treatment as Prevention

For the past decade HCV treatment has mostly involved pegylated interferon and ribavirin (PEG/RBV); however, trials of direct-acting antivirals (DAAs) show increased rates of cure, improved tolerability, and reduced duration of treatment.[3, 7, 8] The first NS3 protease inhibitors, boceprevir and telaprevir, used in combination with PEG/RBV, have already improved outcomes, with up to 75% of patients chronically infected with HCV genotype-1 being cured.[3] Emerging therapies that include next-generation NS3 protease inhibitors, NS5A inhibitors, and NS5B polymerase inhibitors show great promise.[7, 8] An interferon-free 12-week DAA regimen with single daily dosing and over 90% cure is a real possibility.[3]

Highly effective and tolerable HCV therapies will make treatment as prevention feasible. This strategy will require targeting PWID, few of whom undergo HCV treatment despite increasing evidence of success.[6] The rarity of PWID undergoing treatment relates to concerns about interferon toxicity and RBV teratogenicity and unsubstantiated concerns about PWID compliance and high reinfection rates. Apart from managing adverse side effects, we know little about interventions that improve HCV treatment compliance.[9] However, increasing evidence shows that PWID are compliant when treated with PEG/RBV,[10] and compliance can only rise with improved treatment tolerability. Similarly, most evidence suggests HCV reinfection following treatment remains low.[11]

Models developed by Martin et al.[12] suggest that treating a relatively small proportion of PWID could significantly reduce HCV prevalence over 15 years, with the impact varying depending on the number treated, the background HCV prevalence, treatment efficacy, and the speed of treatment scale-up (Fig. 1). Estimated HCV prevalence halved when treatment was scaled up to 15, 40, or 76 per 1,000 PWID annually in Edinburgh (Scotland), Melbourne (Australia), and Vancouver (Canada), respectively, using DAAs. Current estimated HCV prevalence in PWID in those three jurisdictions is 25%, 50%, and 65%, respectively. Recent modeling of PWID in Vietnam also revealed treatment impact on HCV prevalence.[13]

hep26623-fig-0001

Figure 1. Annual scaled-up treatment rate required to reduce prevalence by 1/4, 1/2, or 3/4 in Edinburgh, Melbourne, and Vancouver within 15 years (by 2027). Bars (and numbers) indicate the mean value, with whiskers representing the 95% credibility interval.

Harm Reduction to Reduce HCV Transmission

Prevention of HCV transmission is critically important for HCV eradication. Harm-reduction strategies for PWID, notably OST and NSPs, have been partially effective in reducing HCV transmission in PWID,[14] although poor coverage has limited their impact.[15] A recent study estimated that NSPs directly averted 97,000 (∼50%) new HCV infections in Australia during 2000-2009.[14] Modeling by Vickerman et al.[16] suggests that, in a setting where HCV prevalence is 40%, scaling OST/NSP coverage up from 0% to 20%, 40%, and 60% can reduce HCV prevalence over 10 years by 13%, 24%, and 33%, respectively. However, further increments in coverage produce only marginal improvements,[16] suggesting that complementary strategies are required to substantially reduce HCV prevalence.

Treatment Access and Cost

PWID are highly marginalized and few receive HCV treatment despite increasing evidence that treatment works.[6] Effective engagement with PWID is critical to HCV eradication. Integrated multidisciplinary approaches that include clinicians, nurses and other support services, located in community-based settings or OST clinics, can increase HCV assessment and treatment.[17] Infrastructure, workforce capacity and education programs focused on PWIDs' needs are needed for timely and effective strategy implementation; currently, many primary care clinicians and health service staff know little about HCV assessment and care.[18]

Current HCV treatment is expensive and the cost of scale-up with more expensive therapies will be considerable. Visconti et al.'s[19]modeling found that treating both current and former PWID for HCV using standard PEG/RBV was cost-effective. Martin et al.'s[20] model included the broader public health benefit of reducing HCV prevalence, and showed antiviral treatment for PWID saved £521 and £2,539 per quality-adjusted life year (QALY) when baseline HCV prevalence was 20% and 40%, respectively, compared with no treatment, well below generally accepted thresholds for cost-effective interventions. Despite the cost-effectiveness of treating PWID, the actual costs of HCV treatment, particularly DAAs, will challenge governments in both developed and resource-limited settings; nonetheless, the models suggest standard HCV therapy still has considerable benefits.

Injecting Networks

Most models assume homogeneous mixing of PWID with all other PWID in the population; few consider the impact of PWIDs' social and injecting networks on HCV transmission or clearance. A recent HCV PWID network model derived from empirical data indicated that injecting networks substantially impact transmission.[21] Further modeling suggested that treating PWIDs and their immediate contacts simultaneously (as opposed to ad hoc treatment) reduces the overall number of PWID needing treatment, reducing long-term HCV prevalence and treatment costs.

HCV Vaccination

Candidate vaccines designed to prevent initial infection, reduce viral persistence in acute infection, or lead to sustained virological response (SVR) in chronic infection are in phase 2 and 3 trials.[22] However, experience with the highly effective hepatitis B vaccine suggests uptake among PWID may be low.[23] Hence, an HCV vaccine will be just one component of an HCV eradication strategy.

In conclusion, eradicating HCV in PWID is ambitious but, based on the criteria for assessing disease eradicability,[4] achievable (Table 1). Treatment costs will be substantial and recruiting sufficient PWID to treatment programs challenging. However, scale-up of HCV diagnosis and treatment with new highly efficacious and tolerable drugs, plus effective and relatively inexpensive harm reduction and prevention approaches, will considerably reduce HCV prevalence. Eradicating HCV needs a sustained, focused and multipronged approach; the time to start is now.

Capture

Author Roles: M.H. wrote the first draft of the article. All authors reviewed and edited the primary and subsequent revised versions of the article.

Margaret Hellard1-3
Joseph S. Doyle1-4
Rachel Sacks-Davis1,3
Alexander J. Thompson4,5
Emma McBryde1,4

1Centre for Population Health, Burnet Institute, Melbourne, Victoria, Australia
2Infectious Diseases Unit, The Alfred Hospital, Melbourne, Victoria, Australia
3Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
4Victorian Infectious Disease Service, Royal Melbourne Hospital, Parkville, Victoria, Australia
5Department of Gastroenterology, St Vincent's Hospital, Melbourne, Victoria, Australia

References

Source

January 2, 2014

Risk of transmission associated with sharing drug injecting paraphernalia: analysis of recent hepatitis C virus (HCV) infection using cross-sectional survey data

J Viral Hepat. 2014 Jan;21(1):25-32. doi: 10.1111/jvh.12117. Epub 2013 May 28.

Palmateer N, Hutchinson S, McAllister G, Munro A, Cameron S, Goldberg D, Taylor A.

Abstract

Sharing injecting paraphernalia (containers, filters and water) poses a risk of transmitting the hepatitis C virus (HCV). The prevalence of, and risk of HCV from, such behaviour has not been extensively reported in Europe. People who inject drugs (PWID) were recruited in cross-sectional surveys from services providing sterile injecting equipment across Scotland between 2008 and 2010. Participants completed a questionnaire and provided a blood spot for anonymous testing. Logistic regression was used to examine the association between recent HCV infection (anti-HCV negative and HCV-RNA positive) and self-reported measures of injecting equipment sharing in the 6 months preceding interview. Twelve per cent of the sample reported sharing needles/syringes, and 40% reported sharing paraphernalia in the previous 6 months. The adjusted odds ratios (AOR) for sharing needles/syringes (+/- paraphernalia), and sharing only paraphernalia in the last 6 months were 6.7 (95% CI 2.6-17.1) and 3.0 (95% CI 1.2-7.5), respectively. Among those who reported not sharing needles/syringes, sharing containers and filters were both significantly associated with recent HCV infection (AOR 3.1, 95% CI 1.3-7.8 and 3.1, 95% CI 1.3-7.5, respectively); sharing water was not. We present the first study to apply a cross-sectional approach to the analysis of the association between sharing paraphernalia and incident HCV infection and demonstrate consistent results with previous longitudinal studies. The prevalence of paraphernalia sharing in our study population is high, representing significant potential for HCV transmission.

© 2013 John Wiley & Sons Ltd.

KEYWORDS:

cross-sectional, hepatitis C, incidence, injecting paraphernalia, needles/syringes

PMID: 24329854 [PubMed - in process]

Source

December 29, 2013

Barriers to HCV Screening/Care among IDUs: "Perceptions of drug users regarding Hepatitis C screening and care: a qualitative study"

Provided by NATAP

PDF of report attached here for download

Harm Reduct J. 2013

Ashly E Jordan1,3*, Carmen L Masson2, Pedro Mateu-Gelabert3,4, Courtney McKnight1,3, Nicole Pepper2,
Katie Bouche5, Laura Guzman6, Evan Kletter7, Randy M Seewald1, Don C Des-Jarlais1,3, James L Sorensen2
and David C Perlman1,3

1Beth Israel Medical Center, 120 East 16th St, Floor 12, New York, NY 10003, USA. 2Department of Psychiatry, San Francisco General Hospital, University of California, San Francisco, 1001 Potrero Avenue, Building 20, Suite 2100, San Francisco, CA 94110, USA. 3Center for Drug Use and HIV Research, 120 East 16th St, Floor 12, New York, NY 10003, USA. 4National Development and Research Institutes Inc, 71 West 23rd St. Floor 8, New York, NY 10010, USA. 5Prevention Point, San Francisco AIDS Foundation, HIV Prevention Project, San Francisco AIDS Foundation, 1035 Market Street, Suite 400, San Francisco, CA 94103, California. 6Mission Neighborhood Resource Center, 165 Capp Street, San Francisco, CA 94110, California. 7BAART Programs, 433 Turk Street, San Francisco, CA 94102, California.

Hep

from Jules: Reinfection is a big barrier to care for several reasons not discussed in the study. Recent studies report high reinfection rates for both IDUs and sexual transmission/MSM, treaters use this as a reason all too often to not treat but it is a real concern, no one wants to spend resources & then a patient continues with risky behavior & gets reinfected not once but several times after several courses of pretreatment. So education to patients & case managers about reinfection is crucial. Screening & care is an opportunity to provide education about reinfection & a continuum of followup may be helpful to help assure these vulnerable populations are not reinfected. As well, in the past very often IDUs are not welcome in clinicians offices & are considered not treatable, so they did not get treated, this has to be addressed, there is a stigma & bias by the healthcare system & clinicians that IDUs should not be treated & often they are not welcome in the clinicians office. The IDU plays a role, they can be difficult to deal with, contentious, hard to communicate with, there are concerns about their adherence, alcohol & drug use. But these barriers can & should be addressed, resources are needed, and this applies as well to incarcerated, homeless & mentally ill, who each have a set of not dissimilar barriers. Healthcare facilities that are capable of treating these patient populations must be available & linkage to care must be provided.

from Jules: these barriers reviewed in this article are well known and common. You can see the focus groups for the study were conducted in NY & SF where HCV care & treatment access as well as screening is probably better than most other cities throughout the USA, underscoring the need to (1) establish easily accessible HCV screening sites, (2) intensified public awareness, advertising campaigns are needed to inform the public of HCV, why they should be screened, where they can be screened (DOH/public Hotlines in every city are needed), (3) easy linkage to care is needed for all infected groups, (4) good patient education, easy to understand, about the HCV disease, how it affects a person, how to understand why they should be treated, what treatment consists of, (5) improved communications between clinicians to patients is strongly needed, (6) case managers at screening sites to help with patient eduction, support & linkage to care & followup, (6) its important to communicate the new treatments vs old treatment & the ease of these treatments: IFN-free, 12-24 weeks, little or no side effects, patients need to be educated about the BENEFITS & OUTCOMES of a cure. Every city should have a publicly supported hotline, run by the DOH, or a community group/coalition that has the resources, capacity, skills, knowledge to provide the needed services which include 24/7 hotline, nurses on-call, linkage with screening sites, care centers, support services. Clearly Mayors' offices, State offices, public officials need to be brought on board to assist in this effort. Also helpful to bring in are local groups in large cities well known in the marginalized HCV affected communities to help form a coalition to support the services described above.

"It is estimated that about 60-90% of drug users are infected with HCV [14,38,39]. Focus groups with drug users in MMT, SEP and HIV Primary Care reveal that prior to a diagnosis of HCV, most participants had a poor understanding of HCV and its significance. After being diagnosed, many participants reported not receiving a clear message regarding what the infection meant; their HCV status; and next steps, including follow-up evaluations and the availability, role and efficacy of treatment options. Participants also reported some mistrust of health care providers, recognizing that active drug use is a barrier and commonly reported not receiving referral for HCV clinical evaluation after receiving a positive test result."

"........There were few participants who reported being encouraged to have regular medical follow-up to monitor their HCV infection but without recommendation for treatment.

.......Participants specifically described a lack of explanation and clarity regarding the treatment options for HCV

......As part of this uncertainty about treatment, many people came away with an implicit message that there was not much else that could or needed to be done to treat HCV or to prevent liver damage.

......Some participants, despite having been told they were HCV positive, did not believe they were infected because their providers did not offer them treatment:

.......Few participants in the focus groups had initiated HCV treatment; however, of those who reported initiating treatment, they all discontinued treatment due to adverse drug reactions.

......Mistrust of health care providers' motivations

......One of the barriers participants reported complicating engagement in HCV care was active drug use. Participants reported that when they were using actively they were less likely to get tested for HCV,

.....While testing for HCV was common among focus group participants, most reported being unaware of voluntary testing sites. Most participants were eager to have access to voluntary HCV testing.

"HIV testing is much more accessible to me, more accessible than hepatitis C" Many participants found to be HCV positive reported receiving their results but coming away from post-test counseling without a clear understanding of the significance of the diagnosis or what next steps to take:

feeling fatalistic with a generalized nihilism about managing their infection: "I don't know what to do. Except just walk around dying from it" (African American male).

Abstract

Background

Illicit drug users have a high prevalence of HCV and represent the majority of newly infected persons in the U.S. Despite the availability of effective HCV treatment, few drug users have been evaluated or treated for HCV. Racial and ethnic minorities have a higher incidence and prevalence of HCV and higher HCV-related mortality. Factors contributing to poor engagement in care are incompletely understood.

Methods

Fourteen mixed-gender focus groups of either African American or Latino/a drug users (N = 95) discussed barriers to HCV testing and treatment. Themes were identified through content analysis of focus group discussions.

Results

Many drug users were tested for HCV in settings where they were receiving care. Outside of these settings, most were unaware of voluntary test sites. After testing HCV positive, drug users reported not receiving clear messages regarding the meaning of a positive HCV test, the impact of HCV infection, or appropriate next steps including HCV clinical evaluations. Many drug users perceived treatment as unimportant because they lacked symptoms, healthcare providers minimized the severity of the diagnosis, or providers did not recommend treatment. Mistrust of the motivations of healthcare providers was cited as a barrier to pursuing treatment. Social networks or social interactions were a source of HCV-related information and were influential in shaping drug users perceptions of treatment and its utility.

Conclusion

Drug users perceived a paucity of settings for self-initiated HCV testing and poor provider-patient communication at test sites and during medical encounters. Notably, drug users reported having an unclear understanding about the meaning of a positive HCV test, the health implications of HCV infection, the importance of clinical evaluations and monitoring, and of treatment options for HCV. Efforts to improve the delivery of clinical messages about HCV infection for drug users at test settings and clinical encounters are needed.

Background

\Hepatitis C virus (HCV) is a blood-borne infection most efficiently spread via direct parenteral exposure through non-sterile injection practices [1-4]. The World Health Organization estimates a global prevalence of HCV of 2%, or 123 million people [5] most of whom are chronically infected. HCV is the most common chronic blood borne infection in the United States and worldwide, and accounts for roughly one quarter of all cases of cirrhosis and hepatocelluar carcinoma [6,7]. HCV is hyperendemic among people who inject drugs, representing the largest group of infected persons both worldwide, and in each country where HCV prevalence and risk factor data are available [8-10]. The estimated global prevalence of HCV among IDUs ranges from 9.8% to upwards of 97%, with most estimates falling between 50-90% in regions with long-standing endemic injection drug use [1,4]. The incidence of HCV among IDUs ranges regionally from 10 to 40 per 100 person-years at risk [1,11]. HCV is also transmitted sexually among men who have sex with men, often in association with non-injection illicit drug use [12,13].

HCV causes chronic infection with persistent viremia in the majority of those infected (~85%) [14]. As a result, chronically infected persons constitute a significant reservoir of HCV creating an environmental transmission dynamic that increases the probability that a non-sterile injection episode will be with a chronically HCV-infected person [1,11]. Important sequelae of chronic HCV are liver fibrosis leading to cirrhosis; liver failure; and hepatocellular carcinoma [15]. Studies suggest that over the course of two decades, 20-30% of chronically HCV infected persons will develop cirrhosis, with an estimated 10,000-20,000 early deaths [14]. In the United States, the disease burden is predicted to increase up to 3-fold over the course of the next 10-20 years [15]. The efficacy of HCV treatment has improved in recent years with the introduction of direct-acting antivirals (e.g., telaprevir and boceprevir) and the prospect of interferon-free regimens [16,17]. For many, fear of adverse effects of HCV treatment is a barrier to treatment initiation and may contribute to treatment non-adherence and treatment discontinuation [18-21]. While HCV treatment has the potential to cure the virus in 40-80% of patients, current treatment is arduous, lengthy, expensive and remains inaccessible for many drug users [15]. The majority of drug users remain out of HCV care, and few are engaged in treatment [18,21-24]. Many HCV positive drug users have not been evaluated for HCV treatment; are less likely to see an HCV specialist or to get an HCV RNA polymerase chain reaction (PCR) test to document chronic active infection; and are less likely to be receiving antiviral treatment for HCV compared to non-injection drug users [18,21,25]. Active drug use has been shown to not have a direct, negative effect on treatment efficacy [8,9,26-28]. It is estimated that less than half of drug users with chronic HCV have been offered treatment ever [17].

Racial/ethnic minorities are less likely to receive anti-retroviral therapy for HIV [29,30]. Some prior qualitative studies have highlighted drug users' misconceptions and lack of understanding about HCV, racial and ethnic minorities have a higher incidence and prevalence of HCV and higher HCV-related mortality [18,31-35]. Drug users often have limited access to health care and may experience or perceive stigmatization that poses a barrier to care [23,35]. Additionally, some drug users report that drug use-related stigma is a barrier to HCV testing. Rates of HCV are higher in racial/ethnic minority drug users [36]. Further data to inform the delivery of clinical messages about HCV infection for drug users at test settings and clinical encounters are needed. This study sought to explore racial/ethnic minority drug users' attitudes, perceptions, and experiences regarding HCV and HIV testing, referrals and treatment, through focus groups with drug users in San Francisco and New York City. This paper presents data regarding HCV testing and care.

Methods

Study participants

Fourteen focus groups with a total of 95 participants were conducted in New York City (6 focus groups) and San Francisco (8 focus groups) in three recruitment settings: HIV primary care clinics, methadone maintenance treatment (MMT) programs and syringe exchange programs (SEP). During the course of the study, the HIV clinics both conducted HCV testing and the site in NYC provided on-site HCV treatment; the MMT programs offered anti-HCV testing, but neither viral load testing nor HCV treatment; and the SEPs did routinely offer HCV testing but offered no on-site HCV care. Eligibility criteria required that participants be 18 years of age or older; self-identify as African-American or Latino/a; and be receiving services at one of the recruitment sites. Participants were excluded from the study if they had severe cognitive impairment, suicidal ideation, or active psychosis. The study included persons who have used illicit drugs in the past 12 months by either injection or non-injection routes; non-injection illicit drug users were included because of data demonstrating rates of HIV in non-injectors comparable to injectors in many cities [3] and because of concerns of HCV transmission via drug using paraphernalia and networks [1]. The terms 'drug users' and 'injection drug users' (IDUs) are used throughout the text where appropriate. This manuscript reports on findings with respect to HCV testing and treatment. This study was approved by the Institutional Review Boards of Beth Israel Medical Center and the University of California, San Francisco.

Participants were recruited through staff referrals at each of the recruitment sites regardless of HCV status or prior testing experience. Participants were told that the goals of the focus group were to explore participants' experiences with HIV and HCV testing and care. The number of participants in each group ranged from 3 to 12. All focus groups were of homogenous race/ethnicity, consisting of either Latino/a or African American participants. The rationale for race/ethnicity specific focus groups was to identify possible race/ethnicity specific issues with regard to HIV and HCV testing and care. All focus groups were conducted in English. Participants provided informed consent and were reimbursed $25 for their participation in the study.

Focus groups were conducted by PhD-level qualitative researchers, bi-lingual in English and Spanish; each group lasted roughly 90 minutes. The focus groups used a semi-structured qualitative interview guide designed to explore, in-depth, the following specific thematic areas related to HIV and HCV including: self-perceived risk; general knowledge of the viruses; prior experiences and current feeling about seeking testing; prior pre- and post-test experiences; and prior experiences accessing or remaining engaged in treatment. Further, the interview guide also included open ended queries about individual's drug use histories, knowledge of their own HIV/HCV status, and perceptions about race/ethnicity in relation to testing and care (the focus group guide is available from the corresponding author). Participants recruited for these focus groups were not tested serologically: those recruited from HIV clinics were known to be HIV infected; for others HIV status was by self-report; and for all, HCV status was self-reported. 39% reported HIV infection (21% of the total reported HCV/HIV co-infection), 36% reported HCV mono-infection, and the rest reported unknown status. All focus groups were audio taped and transcribed verbatim.

Qualitative data analysis

Transcripts were coded and analyzed using Atlas.ti V.5 software. At least two researchers individually reviewed and independently coded all transcripts and discussed ambiguities. Grounded theory [37] analytic techniques were used to seek patterns in the data and to develop emergent hypotheses about them. Analysis began by coding verbatim references containing any of the following codes: HCV/HIV testing, access to HCV/HIV care, HCV/HIV treatment, racial/ethnic minority status, co-infection and drug user status. Two emerging codes were added during the analysis: "medical mistrust" and "stigma".

Results

Fourteen focus groups were conducted, 6 in NYC and 8 in San Francisco. The 6 in NYC included one with Latino/a participants and one with African American participants at each of the three recruitment settings (MMT, SEP, and HIV clinic) with a total of 51 participants. The 8 in San Francisco included 2 with African American and 1 with Latino in MMT; 2 Latino and 1 African American at HIV primary care; and 1 African American and 1 Latino at SEP, with a total of 44 participants. The total sample of 95 participants was 41% female (n=39); average age was 45 years (minimum 32, maximum 58). The analysis discusses results related to access to HCV testing, post-test counseling and medical care, experience with HCV treatment and perceptions of HCV treatment. No differences between testing experiences emerged by gender or between focus groups in NYC and San Francisco hence, results are reported in aggregate.

HCV testing

In focus groups, nearly all participants reported having been tested for HCV. Participants generally described an HCV testing experience that consisted of testing at the structured settings in which they were receiving care, with tests commonly having been initiated by health care providers with knowledge of participants' risk factors for HCV. The primary settings in which participants were tested for HCV were MMTs and SEPs. Common to those who were or had been in MMT was a perception that routine HCV testing was a mandatory component of the intake exam and annual physicals for all MMT patients: "You're on methadone, it's a requirement anyway, to get tested for [HCV]" (African American male); no one reported objecting to being tested for HCV in this way. This perceived routinization of HCV testing was also reported by participants who underwent testing at health care sites where tests were usually initiated by health care providers and where the reason for the appointment was to receive care for other illnesses: "I did [HCV] testing when getting [treatment for] pneumonia" (Latino). Such testing often took place without participants being aware that they were tested for HCV: "I found out afterwards [that I was tested for HCV]. [The doctor] tested it on his own". (Latino).

While testing for HCV was common among focus group participants, most reported being unaware of voluntary testing sites. Most participants were eager to have access to voluntary HCV testing. Focus group participants did not report seeking self-initiated HCV testing outside of MMT, SEP, jail and HIV primary care settings: "Most people just don't know where to do it [HCV test], unless you go to the exchange and they happen to be doing it there" (African American male); "You have to find a way to get it [HCV test]; It ain't like-come and get a hep C test. It's like a best-kept secret" (African American male).

Underscoring the reality that HCV is a widely asymptomatic disease, only one participant reported seeking medical attention because they experienced symptoms associated with an HCV infection: "I had yellow jaundice. Like my urine was orange, real dark orange [...] At least the doctor told me [I was HCV positive]" (African American female).

These patterns of HCV testing experiences contrasted with participant reports regarding HIV testing, which were characterized by frequent and self-initiated testing with access to ubiquitous testing sites: "HIV testing is much more accessible to me, more accessible than hepatitis C" (African American female). Participants had a high degree of awareness of available HIV testing sites: "The fact that they're so accessible, I feel like if any day I feel like getting up and going to get [an HIV] test, I can get it the very same day" (Latina). Many participants reported self-initiated HIV testing every three to six months.

Experiences with HCV post-test counseling and referrals

Despite their individual histories of drug use, many participants were surprised when they were first diagnosed with HCV: "My doctor took blood, and he tested it and he told me I had hepatitis C, and that was my first time knowing about it [...] I was an injector". (African American male)

Many participants found to be HCV positive reported receiving their results but coming away from post-test counseling without a clear understanding of the significance of the diagnosis or what next steps to take: "I found out I was hep C positive. [The doctor] told me the basics but they never really told me what the next step was". (Latino) Participants reported confusion and uncertainty given their new situation: They had been given a diagnosis of HCV, but did not come away with a clear understanding of the health implications or what to do next:

You're hep C positive, but now what? they should have a place to send them or I should have somebody some place at my facility to at least counsel them. Nobody has even spoken to them. (African American male)

They won't refer you to nobody, see they just told me and just left me hanging. Just left me there. (African American female)

They didn't give me nothing to go on. I had nothing to take home with me and sit down and study and go over myself... they don't have nothing for the poor person that has contracted hep C. Nobody where I got tested at gave me any literature. (African American female)

Accompanying the feelings of uncertainty regarding an HCV diagnosis, many participants described feeling fatalistic with a generalized nihilism about managing their infection: "I don't know what to do. Except just walk around dying from it" (African American male).

Participants specifically described a lack of explanation and clarity regarding the treatment options for HCV and they were eager for more information and a better understanding of HCV treatment: "When I first found out I had hepatitis C, they didn't suggest any kind of treatment. It was only two or three years later that they made me an appointment for the hospital to go" (Latina). As part of this uncertainty about treatment, many people came away with an implicit message that there was not much else that could or needed to be done to treat HCV or to prevent liver damage. As one participant explained: "Everybody says there's really nothing too much to do when you got that [HCV]. They just say, yeah, I got it, as far as hep C, and they [health care providers] just let you know" (African American male). Participants also reported disengaging from care once they found out they weren't eligible for treatment or that treatment wasn't necessary for them at that point in time.

So he told me that if you want, take a biopsy if you want it, that was my option. So I didn't do it. He said, but your liver seems like it's okay. The numbers are in a good-good place [...] So I dropped it at that. (Latino) Some participants, despite having been told they were HCV positive, did not believe they were infected because their providers did not offer them treatment: "I don't believe them [the doctors] for the simple fact they didn't give me, they didn't give me no medicine for it [HCV]"; "I'm sure he will if I have hep C, he will tell me take this and this medication. He will order it. So I do not believe I have hep C" (African American male).

Experiences with HCV treatment evaluations

Among participants who reported receiving HCV treatment evaluations, many said that they were told by health care providers that due to the healthy state of their liver and the results of various tests to assess their infection, treatment was not recommended at that time. Some understood that treatment was not offered because there was no evidence of liver damage. Many participants reported not initiating HCV treatment because their providers either did not discuss or recommend it: "My doctor told the same thing that everything was fine, not to worry about it [HCV] [...] that the numbers were low and that I didn't need no medication or anything" (Latina); "[My doctor told me] I didn't need a treatment because it wasn't bad [...] My liver wasn't inflamed, and I was doing okay [...] there was no need for medication until years down the line" (African American male).

While some people came away from HCV evaluations understanding that treatment was indicated if there was substantial liver damage and may not be otherwise necessary, many participants did not have a thorough understanding and felt as if they were left in limbo with a positive diagnosis without clear options. Participants who were evaluated but not offered treatment commonly reported being counseled about reducing drug and alcohol use and avoiding excess acetaminophen, "[the doctor] told me that [...] just don't drink any alcohol and don't abuse them, stuff that's going to irritate the liver". (Latino) There were few participants who reported being encouraged to have regular medical follow-up to monitor their HCV infection but without recommendation for treatment.

I went according to my doctor. He said that my viral load was okay, so I tookÑI took it like that, okay, so then I'm fine. Every month, you go see that doctor [...] on a monthly basis and stayÑstay with blood work. (Latino) Few participants in the focus groups had initiated HCV treatment; however, of those who reported initiating treatment, they all discontinued treatment due to adverse drug reactions.

I decided to treat it [HCV] [...] I only did it for like four months because I ended up getting some side effects [...] The medication was doing things that I dislike [...] I told [my doctor] that I am not taking it anymore. (Latino) For the participants who reported being offered treatment, many reported that the low odds of eradicating the virus deterred them from initiating treatment. Additionally, one participant reported that their provider did not recommend treatment saying the patient was infected with an HCV genotype that was poorly responsive to treatment.

Perceptions of HCV treatment

Knowledge and perceptions about HCV treatment often came from peers, and the messages communicated were often discouraging of treatment. While a few patients had previously initiated HCV treatment, most had no direct treatment experience. Participants reported that these communications with peers raised anxiety about the potential adverse side effects of the medication: "I didn't even know what the process was [...] I found out through someone who had hep C, and her experience through it" (Latino).

Participants with HCV were uniformly eager to learn more about HCV treatment and how to stay healthy. Among participants who reported discussing treatment with a health care provider, or who were offered treatment, the majority felt dissuaded from pursuing it. While some participants reported an interest in treatment, the consideration of "everything that goes with it", including not wanting to endure the serious side effects of treatment, was the primary reason that participants chose not to initiate treatment. Among HCV-positive individuals in particular, there was a common perception that HCV treatment was worse than the disease due to the difficulty in coping with the length of treatment and medication side effects: "[There are] bad reactions that a lot of people have with medication. Some people get suicidal, depression [...] They'd get lonely, you know, depressed, big, big stay of depression" (Latino).

Many participants while willing and even eager to consider HCV treatment, many articulated that these fears of lengthy treatment and severe adverse effects- discouraged them from pursuing treatment. Additionally, participants reported believing that treatment might be harmful to their liver, might cause HCV infection or other harmful physical adverse effects, and be inefficacious: "Interferon I've heard is the treatment for it but I've heard that the treatment is worse than the disease and it's not effective". (Latino) Such concerns lead many infected but asymptomatic participants to not seek treatment; as one participant explained it: "if it ain't broke, don't fix it" (African American male). This attitude was common; participants reported believing that it was more advantageous to their health to not seek treatment rather than pursue treatment and risk making their health worse: "my liver function is still good, so I'm not going [to] take something that's going [to] make me worse" (Latino). In contrast, across focus groups, participants' overall knowledge about HIV and treatment options was extensive, regardless of their HIV status. Participants understood opportunistic infections; various tests indicating HIV/AIDS status; treatment outcomes; and the necessity of treatment to control the infection "If you're told you got HIV [...] it's not like before, like it's more manageable, you can live longer [...] there's so many drugs that can help with it". (Latina) In addition to their individual concerns about HCV, participants also regarded HCV as a virus infecting and affecting drug users rather than non-drug users. They concluded that the paucity of HCV services and the lack of effective treatment options were the result of stigma and marginalization of IDUs. In addition, participants described their belief that socioeconomic factors and insurance availability influenced their doctors' decision making regarding the provision of HCV treatment.

If you have private insurance [...] They'll give you all the treatment and health that you want...but because they know that Medicaid is not going to pay them their money on time- they're going to get paid [...] they're not ready and willing to offer this treatment [to those with Medicaid]. (Latino)
I think a lot has to do with - people who - the powers that be don't use drugs like we use drugs. It [HCV] don't affect them. (African American male) One participant explained that she felt mistreated by her doctor: "They kick you to the side". (African American female)

Mistrust of health care providers' motivations manifested in other ways. Some participants reported believing that their providers were diagnosing, and even misdiagnosing HCV to receive insurance payments for their visits.

Implications of drug use

One of the barriers participants reported complicating engagement in HCV care was active drug use. Participants reported that when they were using actively they were less likely to get tested for HCV, "Personally, I wouldn't put down no syringe [...] to go get tested [for HCV]" (Latino); "It took me so long [to get tested] because I was getting high". (Latino) One participant explained that her commencing HCV care occurred "fast as my addiction would let me go". (African American female) Active drug use not only emerged as a barrier to participants' willingness to engage in HCV testing, but also as a barrier to clinical follow-up after receiving a HCV diagnosis. Participants reported that the consuming nature of drug use precluded any motivation to seek care. One participant attributed his active heroin use to his inability to schedule an appointment for an HCV evaluation from a referral he received after being tested for HCV:

Yes, [the doctor] told me ... numerous times. I just didn't do it. Either I forgot about it or was just too lazy to get up off my ass and go do it. I got a thing about keeping appointments [...] it's the dope's fault. (African American male)

Discussion

It is estimated that about 60-90% of drug users are infected with HCV [14,38,39]. Focus groups with drug users in MMT, SEP and HIV Primary Care reveal that prior to a diagnosis of HCV, most participants had a poor understanding of HCV and its significance. After being diagnosed, many participants reported not receiving a clear message regarding what the infection meant; their HCV status; and next steps, including follow-up evaluations and the availability, role and efficacy of treatment options. Participants also reported some mistrust of health care providers, recognizing that active drug use is a barrier and commonly reported not receiving referral for HCV clinical evaluation after receiving a positive test result.

Many drug users come into contact with drug treatment programs and/or drug related services such as needle exchange. These programs serve as important points of access for health services. In focus groups discussions, participants explained that programs for drug use served as primary settings in which they received HCV testing. SEPs and MMTs along with other clinical settings were structured settings in which participants reported receiving HCV testing. Our findings underscore the importance and utility of providing HCV testing in drug treatment programs or programs aimed at serving drug users. In our sample the majority of drug users had reported receiving at least one HCV test in the past; this has not been the case in all previous studies [35,39]. This may relate to participants' having been recruited in clinical or harm reduction settings.

In contrast to ready access to voluntary HIV testing, participants in our study reported limited access to voluntary HCV testing. Participants in numerous studies reported feeling most comfortable accessing HCV testing and HCV-related services at sites where providers had an understanding of addiction and were accustomed to and respectful of drug users [15,40]. In our study, participant comments also suggested that in the health care systems they accessed, there were few settings available for voluntary HCV setting (e.g., mobile HIV testing but no HCV testing vans). In this way, and in the learned experience of our focus group participants, offering both targeted and voluntary testing at sites where drug users are already receiving services, in settings widely populated by drug users, could serve as effective points of entry for drug users to initiate and maintain care for their HCV infections.

Overall, participants reported a gap between testing and receiving referrals to medical evaluations following a positive HCV test result. Many publications document low rates of referral after testing positive [27,34,35] but it is usually assumed that this gap is due to patient non-adherence; our data demonstrates drug users perceive not having had received referrals. Participants reported feeling abandoned by clinicians, a finding that is consistent with other studies of HCV testing among drug users [15,41]. It is important to note that the same barriers that participants identified may also contribute to provider reluctance to initiative HCV treatment for drug users, however, several studies have highlighted that with appropriate attention to these issues, active drug users can be successfully treated for HCV [9].

Most participants in our study were unclear about how HCV infection should be evaluated and monitored, and about treatment. Some participants also perceived HCV treatment as something available to the wealthy and not to marginalized groups or those on Medicaid. Others were suspicious that HCV was diagnosed and treatment offered more for profit than to improve the health and well-being of patients. It is difficult to know whether these perceptions were based on a lack of understanding of HCV infection and treatment (a knowledge deficit) versus based primarily on emotional factors such as medical mistrust. The former would be amendable to educational efforts while the latter would require being addressed by other intervention strategies.

The fact that focus group participants reported relying heavily on peers for HCV treatment knowledge suggests that support from peers may be a valuable way to engage drug users in HCV care. This finding is consistent with qualitative studies that have been published on this topic [15,40]. This peer-gained knowledge of HCV and its treatment is maintained through peer relationships.

These forums serve a critical role in disseminating information about HCV to those either untreated, out of care or who have not received adequate information from their providers [8].

The findings presented in this paper should be interpreted with some caution as reported experiences may not be generalizable to all drug users in all settings. It is possible that the focus group framing or even the nature of discussing these issues in a group setting may have led to reporting bias. There may also be other factors that did not emerge in the discussions. Due to the design of the study, for those participants recruited at sites other than HIV clinics, HIV status was my self-report and for all participants HCV status was self-reported. Further, we could not confirm self-reports of prior testing and it is therefore important to note that what patients reported were their perceptions and memories. Also, it is impossible to discern the extent to which HCV treatment was medically necessary for the HCV-positive focus group participants. The data collected through focus groups are qualitative and further quantitative survey data about the proportion of DUs having positive, neutral, or negative experiences would be valuable. Further, these focus groups were conducted during 2008-2009 and issues of awareness and access may have changed; however, the availability of improved therapies only increases the need to have clear understandings of potential barriers. Finally, due to funding limitations, 1) focus groups were not conducted with white drug users, which would have been useful for comparison; and 2) only English-speaking drug users were eligible for this study, and therefore our findings may not reflect those of non-English speaking drug users.

HCV remains a critical public health challenge among drug users, and the numbers of deaths due to HCV have surpassed those due to HIV/AIDS [42]. A recent meta-analysis has demonstrated that a sustained virologic response after treatment is associated with a reduced incidence of hepatocellular carcinoma underscoring the importance of engaging HCV infected patients in treatment [43]. HCV is a major cause of preventable morbidity and mortality among IDUs; scaled-up efforts to prevent HCV are imperative. Efforts to increase or establish HCV surveillance as well as the development of comprehensive and effective strategies to reduce transmission among IDUs are urgently needed. Public health approaches to HCV may benefit from expanding access to and awareness of voluntary HCV testing sites and treatment services. Standardized post-test counseling messages and active referral are critical in efforts to promote stronger linkages between HCV testing and care. Concrete, active referral linkages may also be needed [44]. Additionally, as with the Seek, Test, and Treat strategy being employed to reduce population HIV rates, programs targeted at increasing rates of HCV treatment among drug users might be an important strategy to reduce the number of HCV-positive persons, thus reducing both overall risk to individual drug users and reducing HCV prevalence at the population level.

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