Prisons and HCV: a review and a report on an experience in New South Wales Australia

Hepatitis C treatment access and uptake for people who inject drugs: a review mapping the role of social factors

Background

Evidence documents successful hepatitis C virus (HCV) treatment outcomes for people who inject drugs (PWID) and interest in HCV treatment among this population. Maximising HCV treatment for PWID can be an effective HCV preventative measure. Yet HCV treatment among PWID remains suboptimal. This review seeks to map social factors mediating HCV treatment access.

Method

We undertook a review of the social science and public health literature pertaining to HCV treatment for PWID, with a focus on barriers to treatment access, uptake and completion. Medline and Scopus databases were searched, supplemented by manual and grey literature searches. A two step search was taken, with the first step pertaining to literature on HCV treatment for PWID and the second focusing on social structural factors. In total, 596 references were screened, with 165 articles and reports selected to inform the review.

Results

Clinical and individual level barriers to HCV treatment among PWID are well evidenced. These include patient and provider concerns regarding co-morbidities, adherence, and side effect management. Social factors affecting treatment access are less well evidenced. In attempting to map these, key barriers fall into the following domains: social stigma, housing, criminalisation, health care systems, and gender. Key facilitating factors to treatment access include: combination intervention approaches encompassing social as well as biomedical interventions, low threshold access to opiate substitution therapy, and integrated delivery of multidisciplinary care.

Conclusion

Combination intervention approaches need to encompass social interventions in relation to housing, stigma reduction and systemic changes in policy and health care delivery. Future research needs to better delineate social factors affecting treatment access.

Safety and effectiveness of a nurse-led outreach program for assessment and treatment of chronic hepatitis C in the custodial setting

BACKGROUND

The global burden of disease attributable to chronic hepatitis C virus (HCV) is very large, yet the uptake of curative antiviral therapies remains very low, reflecting the marginalized patient population and the arduous nature of current treatments.

METHODS

The safety and effectiveness of a nurse-led model of care of inmates with chronic HCV was evaluated in 3 Australian correctional centers. The model featured protocol-driven assessment, triage, and management of antiviral therapy by specifically trained nurses, with specialist physician support utilizing telemedicine. Outcomes were evaluated qualitatively with key informant interviews, and quantitatively with patient numbers completing key clinical milestones and adverse events.

RESULTS

A total of 391 patients with chronic HCV infection were enrolled, of whom 141 (36%) completed the clinical and laboratory evaluations for eligibility for antiviral therapy over 24 months. Treatment was initiated in 108 patients (28%), including 85 (79%) triaged for specialist review conducted by telemedicine only. The demographic and clinical characteristics of the patients who entered the model and completed workup and those who initiated treatment featured a high prevalence of individuals of indigenous background, injection drug users, and those with psychiatric disorder. Serious adverse events occurred in 13 of 108 treated patients (12%) with discontinuation in 8 (7%). The sustained virologic response rate among those with complete follow-up data (n=68) was 69%, and by intention-to treat analysis was 44%.

CONCLUSIONS

This nurse-led and specialist-supported assessment and treatment model for inmates with chronic HCV offers potential to substantively increase treatment uptake and reduce the burden of disease.

High prevalence of late relapse and reinfection in prisoners treated for chronic hepatitis C

BACKGROUND AND AIM

Prisoners have a high prevalence of injection drug use (IDU) and chronic hepatitis C (CHC) infection. Treatment of CHC in these patients is effective; however, their long-term outcomes following treatment are unknown. We determined the durability of a sustained virological response (SVR) in prisoners treated for CHC.

METHODS

Patients were treated as part of routine clinical practice with interferon (IFN) and ribavirin. A retrospective review of medical records and a computerized pathology system was performed for clinical and laboratory information.

RESULTS

Seventy-four prisoners (70 males, mean age 34 years, IDU in 55%) were evaluable for a SVR over a 12-year period to December 2008; the mean follow-up period was 1243 days. Genotype 1, 2, 3, and 6 infection was present in 18, three, 38 and three patients, respectively; the genotype was unknown in 12. Three out of 52 biopsied had cirrhosis. Standard IFN was administered to 25 (34%; 11 with ribavirin), and 49 received pegylated IFN and ribavirin; one did not complete treatment, and two had breakthrough relapses. The end-of-treatment response was achieved in 57 and SVR in 53; 14 were non-responders. Five male patients, four with unknown genotypes and treated with standard IFN alone, relapsed late (following SVR, 9%). Five patients, all treated with pegylated IFN and ribavirin, were reinfected (one prior to and four following SVR).

CONCLUSIONS

Prisoners are often successfully treated for CHC. However, this retrospective study indicates that there is a high (17%) prevalence of late recurrence of viremia that is likely a reflection of reinfection due to ongoing risk-taking behavior.

Establishment of a successful assessment and treatment service for Australian prison inmates with chronic hepatitis C

OBJECTIVE

To evaluate the assessment and treatment outcomes of a prison hepatitis service.

DESIGN AND SETTING

A retrospective, observational cohort study of prison inmates who attended hepatitis clinics from 1996 to 2005 at correctional centres in New South Wales.

PATIENTS

Inmates who attended the clinics, including a nested case-control series of patients who received antiviral treatment and age- and sex-matched patients who did not receive treatment.

MAIN OUTCOME MEASURES

Demographic and clinical characteristics of patients who attended the service; correlates of selection for antiviral treatment; and clinical and virological outcomes of treatment.

RESULTS

Of the 1043 inmates who attended the clinics, 851 were men (82%) and 994 (95%) were referred for HCV infection; the mean age for this group was 33 years (range, 18-74 years). In the case-control series (185 treated and 186 untreated patients), selection for treatment was not biased by culturally and linguistically diverse background, current methadone treatment or psychiatric status. In the treated group, 76 of 138 genotyped patients had a genotype that is predictive of favourable treatment response, and a small minority of those with available liver biopsy results had established cirrhosis (7/119 patients). Of treated patients for whom complete follow-up data were available, 55% achieved sustained virological response and 100% adhered to therapy. In addition, treatment episodes were not especially complicated.

CONCLUSION

Although the prison population has high rates of injecting drug use and poor mental health, imprisonment offers an opportunity for assessment and treatment of chronic HCV infection.

Viral hepatitis in incarcerated adults: a medical and public health concern

Viral hepatitis is a common problem in the incarcerated population. It causes significant morbidity and mortality, and incarcerated inmates receive their health care almost exclusively from corrections-based health systems. The seroprevalence of hepatitis B and C infections is increased in this population, and a number of risk factors for viral hepatitis are particularly common and infer higher risk among inmates, including injection drug use (IDU), high-risk sexual activity, and tattoos. IDU, in particular, has been identified as an important and common risk factor for viral hepatitis in inmates, and variable rates of IDU among inmates have been found to be the most important cause of the marked variability of seroprevalence rates for exposure to hepatitis C virus. A number of risk reduction and management strategies have been identified that can decrease transmission to other inmates. Prison-based hepatitis A and hepatitis B vaccination programs, needle exchange programs, methadone maintenance programs, risk education programs, and hepatitis C virus antiviral programs, for example, have been shown to be safe and effective risk reduction and management strategies. Preliminary studies have shown that these strategies are underutilized in the United States. Reasons for this phenomenon are multifactorial, involving financial as well as ethical and political considerations. Additional funding, research, and formal consideration / discussion of the complex issues involving viral hepatitis in the US incarcerated population are clearly important for the sake of inmates and the community at large. In this article, the published medical literature regarding this important topic is reviewed.