Abstract
Approximately 25% of people in Canadian correctional facilities have been previously exposed to hepatitis C virus (HCV). Despite being a high-prevalence setting, most Canadian prisons have thus far failed to engage the majority of those with chronic HCV infection in care. Several factors, including the lack of systematic screening programs, lack of on-site and trained health care personnel to improve access to care and treatment during incarceration, and the absence of standardized procedures needed to facilitate linkage to care following release likely contribute to poor engagement along the HCV care cascade for people in prison. HCV screening and engagement in care for people in prison can be improved through the implementation of universal opt-out screening upon admission and consideration of multidisciplinary care models for the provision of care. As well, the dissemination of prison-based needle and syringe programs to avert new HCV infections and re-infections should be considered. To meet the World Health Organization (WHO) 2030 HCV elimination goals, engaging researchers, clinicians and other health care providers, policy makers, correctional officials, and members of community in dialogue will be an essential first step going forward.
Keywords: harm reduction, HCV micro-elimination, hepatitis C virus, linkage, people in prison, screening, treatment
Introduction
With the advent of all oral short-course and highly effective direct-acting antiviral (DAA) therapy, the World Health Organization (WHO) goal of reducing global hepatitis C virus (HCV) infections by 90% by 2030 may be feasible (1). To reduce liver-related morbidity and mortality, treatment in Canada has thus far focused on individuals with advanced liver disease (2); however, Canada is currently not on track to accomplish the WHO elimination goals (3). To achieve the WHO elimination goals, prioritizing high-prevalence and -incidence sub-populations who drive the HCV epidemic in Canada, such as people in prison, should be the major focus going forward. As articulated by the WHO, ‘The state has a special duty of care for those in places of detention which should cover safety, basic needs and recognition of human rights, including the right to health’ (4). To make progress, we must involve researchers, clinicians and other health care professionals, policy makers, and members of community. As a joint effort is required, so too reflects this narrative review, incorporating perspectives from Canadian clinician-scientists and individuals with lived experience on the current realities, challenges, and opportunities for equitable access to HCV prevention and care in Canadian correctional facilities.
Burden of HCV in Canadian Correctional Facilities
There are two types of correctional facilities in Canada: federal and provincial/territorial. Federal correctional facilities hold people who have been sentenced to time in custody of 2 years or more, while provincial correctional facilities hold people who have been sentenced to less than 2 years in custody or who are held while awaiting trial or sentencing (remand) (5). Most recent data from 2015/2016 indicate that there were 43 federal and 173 provincial/territorial prisons in Canada (6,7), and 201,189 admissions to provincial/territorial custody and 7,618 admissions to federal custody (5). In 2011, the Public Health Agency of Canada (PHAC) estimated that ~25% of persons in federal or provincial/territorial custody were HCV antibody–positive (8), meaning that exposure to HCV is approximately 40-fold higher among persons in custody compared with the general Canadian population (8,9). The high prevalence of HCV in people in prisons is undoubtedly driven by the criminalization of injection drug use, which leads to the over-representation of people who inject drugs and with substance use disorders in prison, and with risk behaviours such as needle sharing in prison and in the community (10–14) in the context of limited access to harm reduction and substance use disorder treatment in prison. While the Correctional Service of Canada (CSC) recently prioritized the estimated 2,700 people with chronic HCV in federal custody for treatment in 2017/2018 (15), the same commitment to the 4,380 people living with chronic HCV in provincial/territorial prisons each day has not been made (16). Substantial challenges to treatment in provincial/territorial facilities are the short median lengths of stay of incarceration, with more than one-third of admissions to provincial/territorial custody lasting 1 week or less and more than half lasting less than 1 month (5), and the uncertainty regarding the length of stay and date of release, which reflect the types of charges and criminal justice system processes. A recent Canadian study found that HIV-HCV co-infected persons with a history of incarceration were 30% less likely to access treatment even in the DAA era (17), a proportion that is expected to be much higher among HCV-monoinfected persons given the lack of HIV care engagement. Further, several recent modelling studies have confirmed the negative impact of incarceration on fuelling HCV transmission both during incarceration and following release (18–20). Therefore, while people in prison remain disproportionately affected by HCV in Canada, to achieve micro-elimination in this sub-population, concerted efforts are required to improve engagement along the entire HCV care cascade both during and following incarceration.
HCV screening in Canadian correctional facilities
Admission to correctional facilities can provide an important opportunity to identify HCV cases through screening and initiate engagement along the HCV care cascade (21). Just as discourse regarding HIV has shifted to include a population health perspective on identifying and treating individuals to prevent ongoing transmission, a similar approach may be appropriate for HCV to meet the WHO elimination goals (22). Informed by available evidence, the Canadian Task Force on Preventive Health Care, the Canadian Association for the Study of the Liver, and the WHO have recommended HCV screening for all people who experience imprisonment (23–25). This is particularly reasonable given that a sizable proportion of incarcerated individuals are unaware of their status (26). Despite this, universal screening programs are rare in Canadian correctional facilities. For example, while federal correctional facilities offer opt-in testing routinely on admission, except for British Columbia, the majority of provincial and territorial correctional facilities provide testing only upon request.
The timing of testing, the service delivery model, and the type of test are all important factors in optimizing screening participation. In two studies, screening rates were highest on the day after admission compared with at the time of admission or 1 week thereafter (27,28), and engaging patients in care may be more feasible if screening is done prior to release (29). On-site nurse-led screening has been shown to be effective (30); HCV testing rates increased from 13.0% to 25.4% with the implementation of a public health nurse-run clinic in three Australian prisons (31). There is limited evidence regarding whether the availability of point-of-care (POC) testing in prisons improves screening; however, a pilot study in Rhode Island demonstrated that POC HCV testing was feasible and acceptable (32). Evidence is mixed regarding whether dried blood spot (DBS) testing in correctional facilities improves screening rates (33,34); DBS testing may itself require a package of interventions to be effective (35,36). The Xpert HCV viral load finger-stick POC assay, although not yet approved in Canada, could offer several advantages in prison settings (37), including the ability to diagnose active HCV infection in a single visit, with a turnaround time of 1 hour. An equally sensitive and specific screening test approved in Canada in January 2017 is the OraQuick HCV finger prick rapid antibody test, with a turnaround time of 20 minutes (38). A pilot study is currently underway to evaluate its acceptability at the largest provincial prison in Quebec.
Universal screening for HCV among people in prison would improve testing rates and case identification and would be cost-effective if linked with treatment. A large study in the Philadelphia prison system found that risk-based screening identified only about one-fifth of people with HCV infection, suggesting that universal screening would be more appropriate (39). A United Kingdom (UK) modelling study determined that DBS testing on prison entry would be cost-effective at a threshold of £20,000 ($34,000 CAD) per quality-adjusted life year (QALY) gained only if over 40% of people were linked to treatment (40). Further research supports that increased testing rates, such as through an opt-out system, and use of shorter-course direct-acting antivirals would be cost-effective at a threshold of £20,000 ($34,000 CAD) per QALY (41). A US modelling study found that universal opt-out screening in American prisons would be highly cost-effective and would reduce HCV transmission and HCV-associated diseases, primarily in the community, with incremental cost-effectiveness ratios (ICERs) ranging from $20,600 to $29,200 per QALY (21). Therefore, greater reductions in HCV transmission would be expected if opt-out screening were linked with treatment.
HCV treatment in Canadian correctional facilities
There are major disparities in the provision of HCV care in federal and provincial/territorial prisons. As previously mentioned, treatment of all people with chronic HCV in federal prisons has been implemented in Canada; however, the number of people who have been treated and cured to date remains unknown. Policy and programmatic support for treatment initiation and access varies across provincial and territorial jurisdictions. Any efforts to improve access to HCV treatment in provincial/territorial prisons must remain cognizant that a minority of people incarcerated will be in custody long enough to complete treatment during incarceration. This reality has important implications for the provision of HCV care in provincial/territorial prisons and argues for strengthening linkage to care strategies following release.
The case to strengthen linkage to care for people in provincial/territorial prisons following release is based on several arguments. First, the short incarceration times (median: 28 days) and associated high turnover rates make treatment initiation in custody with linkage to care after release or linkage to care after release for treatment initiation more likely than the completion of treatment in custody. In fact, a study performed in the pre-DAA era showed that HCV cure rates were substantially lower among individuals who were transferred (59%) or released (45%) during treatment compared with those who completed treatment in prison (74%), underscoring the importance of linkage post-release (42). Second, despite negotiations by the pan-Canadian Pharmaceutical Alliance that resulted in price reductions, the cost of DAAs remains very high, and may not be feasible with provincial prisons’ budgets (43). Third, linkage to care has broader health impacts during the precarious early weeks following release (44–46), and linkage with primary care could address some of the competing priorities that may interfere with ongoing HCV care (e.g., housing status, management of substance use disorders, mental health issues). Fourth, linkage to care is often the rate-limiting step to HCV care for recently released inmates (47); however, once linked, up to two-thirds of former inmates initiate treatment (48,49). Once linkage and subsequent treatment uptake occurs, modelling studies have shown that there is an overall reduction in HCV incidence and prevalence among all people who inject drugs, including those incarcerated and in the community, suggesting both an individual- and population-level impact (19). Thus, the optimal HCV “micro-elimination” strategy for the majority of people in provincial/territorial prisons may be to optimize linkage to care following release.
US studies demonstrate that fewer than one in 10 people who experienced incarceration is linked to HCV care following release (48,49), indicating that there may be an important role for greater emphasis on linkage and supports for linkage such as peer navigation. Peer navigation has been shown to improve linkage to HIV care for released inmates (50–53), and is recommended by the US Centers for Disease Control and Prevention (CDC) and, in 2018, by the Canadian AIDS Treatment Information Exchange as an effective intervention for enhancing patient engagement along the HIV cascade of care (54,55). Few peer navigation models have evaluated linkage to HCV care for released inmates. One such model was the transitional care coordination program in New York City jails; however, only 33% of released inmates were linked within a median time of 31 days (56). Given the challenges with treatment completion in provincial/territorial prisons, research evaluating linkage to HCV care models is warranted. A study is currently underway at Bordeaux prison, the largest provincial prison in Quebec, to determine the effectiveness of a multidisciplinary care team including peer navigation, on linkage to HCV care following release.
Once linkage to HCV care programs is strengthened, treatment can be considered for all people in provincial/territorial facilities. In the meantime, 10% of persons released from provincial/territorial correctional facilities have a length of stay in custody greater than 6 months. As has been successfully done in the United States, Iceland, Australia, and Spain, individuals in custody long enough to complete a course of DAAs should be considered for treatment during incarceration (47,57–59). This may represent a small but important step in HCV elimination in Canadian correctional facilities.
Novel models of HCV care
Due to short incarceration times, frequent prison transfers, and unplanned releases, persons in provincial prisons require accelerated pre-treatment evaluations to expedite HCV treatment initiation. Same-day diagnosis and treatment, referred to as test and treat, are now possible with recent developments in POC diagnostics and the availability of pan-genotypic regimens, many of which are now approved by Health Canada (24,60,61). However, rapid initiation of therapy is not possible unless the need for HCV genotyping is removed; in almost all provinces, a genotype remains a requirement for the reimbursement of DAAs. Furthermore, while few correctional facilities have consistent access to portable transient elastography, others rely simply on non-invasive biomarkers for determination of fibrosis staging (62)—the latter of which may be a more pragmatic option for correctional facilities.
Given the short lengths of incarceration in provincial correctional settings, not only should the time to diagnosis and treatment initiation be reduced, but the possibility of shortening the overall treatment duration should be explored. Various clinical trials have studied the feasibility of treatment durations of 4 to 6 weeks (63–67) with generally disappointing results. However, in one promising but small study, 6 weeks of combination therapy with sofosbuvir/velpatasvir/voxilaprevir cured 14 of 15 treatment-naïve genotype 1 individuals with no evidence of cirrhosis (68). Further studies are required to determine whether short-duration therapy is both safe and feasible, and can ultimately be used in correctional settings.
Increasing evidence is emerging on the role of task-shifting to non-specialist providers for the provision of HCV care. A recent study in Washington, DC, showed no difference in sustained virologic response (SVR) rates among individuals treated by specialists versus primary care providers (69). Australia was one of the first countries to employ nurse-led models of care in the interferon era with success (70), which they have now successfully implemented in four New South Wales correctional centres (the SToP-C study) (71). A needs assessment from the same Australian group underscored the importance of nurses with expertise in managing viral hepatitis in improving prison hepatitis services (72). Task-shifting may also have the added advantage of reducing associated costs relative to traditional specialist care.
Telemedicine, which refers to the process of connecting patients to physicians via videoconference, may also facilitate timely access to HCV care and reduce transportation costs between correctional facilities and referral centres for people in prison. Telemedicine has already been used successfully to manage HCV in the Canadian context (73). A similar approach could be employed in correctional settings, particularly for those with challenging geographical access to health care centres. Exceptions could be made for individuals with cirrhosis or HIV-HCV co-infection where an expert evaluation would be considered necessary. The JailFree-C Program, which uses telemedicine in El Dueso prison in Cantabria, Spain, has shown substantial cost-savings primarily in indirect patient transfers (74). A similar method to employ telemedicine involves liaising prison-based primary care providers interested in managing HCV with specialist providers who could provide advice and mentorship. The success of this Extension for Community Healthcare Outcomes (ECHO) model in the management of HCV was first described in 2011 (75) and continues to be used today in a variety of settings including correctional facilities (74). Implementation of this model may be of benefit in correctional facilities in Canada.
Harm reduction in Canadian correctional facilities
People in prisons are frequently incarcerated for crimes related to drugs and, therefore, the prevalence of substance use is higher in people in prison than in the general population (10,11,76). Although people in prison may inject less frequently compared with when in the community (77), the prison injection environment is known to be riskier (78). Former inmates in Ontario reported frequent equipment sharing (79), and the organization of illegal prison economies around the importation, sale, and use of needles and syringes (80).
Harm reduction aims to reduce the negative consequences associated with high-risk activities through policies, programs, and strategies. The 2003 WHO Moscow Declaration states that ‘Prisoners shall have access to the health services available in the country without discrimination on the grounds of their legal situation.’ (81 p2). The 2014 WHO Prisons and Health report states that ‘Prison services have a responsibility to ensure that prisoners are not exposed to hazards likely to injure their health’ (4 p1). Despite this, the adequate provision of sterile needles, syringes, and other paraphernalia, known to reduce HCV transmission, particularly when combined with opioid agonist therapy (82), are not routinely available in Canadian correctional facilities.
Currently, most correctional institutions in Canada only provide bleach to reduce HCV transmission through injection (83). However, PHAC concluded that bleach disinfection offers little benefit to prevent HCV transmission among people who inject drugs (84). Thus, despite numerous studies confirming prisons as high-risk environments for HCV transmission (18–20), and WHO declarations expressing the need for equivalency of health care and safety for people in prison, prison-based needle and syringe programs (PNSPs) are largely unavailable in Canada.
The United Nations Office on Drugs and Crime provides compelling evidence for PNSPs as effective harm reduction interventions (85). Despite major concerns expressed by prison officials, a recent meta-analysis of PNSPs showed no increase in drug consumption or injection following implementation, and improved institutional safety for both staff and prisoners (86). Also, acceptance and support for PNSPs by trained prison staff was derived shortly after implementation (86). In 2016, 246 organizations signed a statement acknowledging ‘the overwhelming evidence supporting PNSPs in prisons’ and recognized the urgent need for their dissemination in Canada (87 p1). One small step forward was the announcement by CSC in May 2018 that a pilot Prison Needle Exchange Program in two federal institutions was being introduced to give inmates access to clean needles (88). We await the outcome of this program mindful that participation in PNSPs has been classically hindered by the lack of guaranteed confidentiality (89).
Opioid agonist treatment (OAT) is another evidence-based harm reduction measure (90,91). Since 2001, federal inmates have had access to methadone maintenance treatment (MMT) programs (92,93). MMT programs aimed to reduce the transmission of blood-borne infections by minimizing the adverse physical, psychological, social and criminal impacts associated with opioid use (94). In 2008, MMT programs were replaced by opioid substitution therapy (OST) programs to include suboxone as a treatment option (95). Consequently, uptake of suboxone by people incarcerated in federal prisons has increased over time (93). Access to OAT in Canadian provincial prisons is variable as each province has unique delivery methods, policies and monitoring (96). Currently, OAT is provided to all individuals admitted to provincial prisons on methadone (96).
Finally, HCV may also be transmitted by unsafe tattooing practices in prisons (97). In 2005, a safer tattooing initiative was implemented by CSC in six federal institutions. Despite an evaluation reporting enhanced knowledge and awareness among staff and inmates about blood-borne infectious disease prevention and control practices and the potential to reduce harm and enhance the health and safety of staff and inmates, the program was terminated in 2007 by the federal government (98). No similar initiatives have since been attempted in Canada.
The importance of community involvement
Improving collaboration with community organizations is essential for developing programs and policies to support HCV care cascade engagement for people who experience incarceration, while in custody and in the community after release. Effective collaboration with stakeholders could support the development of acceptable and effective health promotion efforts and programs, reduce HCV-related stigma among prison personnel and inmates, and share the burden of costs and programming between correctional authorities and community-based health care.
In particular, the stories of people with lived experience of imprisonment elucidate the diverse and substantial challenges with respect to health and access to health care including prevention and care for HCV, and underscore the need to provide access to HCV care as a right, as any individual, incarcerated or not, deserves to be considered for cure. This is illustrated by the following personal reflection:
When I reflect on my experience of being homeless, struggling with substance use, and being a frequent flyer, or visitor, within our provincial jail system, many overwhelming feelings arise around the lack of control I had with my emotional and physical health. The first time I was ever admitted into a jail, I was placed on “head watch”. I woke up in a cell with no understanding of why I was there, what my charges were, or why I had two black eyes. There was no follow-up from any health care staff or social workers regarding my head injury. I was left no other choice but to adapt quickly to my surroundings and find direction from my fellow prisoners on how to survive jail life, and how to access supports while incarcerated.
Once I became “comfortable” within the jail setting, I decided to have some of my health concerns addressed, assuming this would be a perfect time to deal with my health. I had a little more structure while being incarcerated than I did when I was living on the streets, as I was not busy trying to find my next meal or where to safely rest my head.
To see a doctor inside, I had to submit written requests, outlining my health care concerns. At first, I was not comfortable with putting some of my health requests on a small piece of paper that offered no confidentiality, and every opportunity for correctional officers to know (and possibly judge) me based on my health issues. Having to go through this process and have no confirmation of seeing a doctor, was very foreign to me. With my frequent visits in and out of the jail system, I started to realize that there was no guarantee of seeing a doctor, and, as a prisoner, if I developed a reputation for complaining about the lack of medical attention that I was receiving, this could impact the way that I was treated by health care staff.
When it came to seeking assistance around my mental health issues, the opportunities I had were very limited. There were not enough therapists or other staff available to respond to the number of requests for mental health support. I remember sitting in my cell ruminating over my fears about my health, and why it was so difficult to access any health care while inside. I just needed help.
Conclusions
While HCV elimination should be prioritized for people in prison, there remain large gaps in the current realities and the much-needed Canadian response. An evidence-based approach to HCV micro-elimination would entail systematic screening of all inmates, enhanced treatment and linkage to care programs, and the expansion of prison-based needle and syringe exchange programs and OAT options, guided and supported in consultation with community. Prison settings remain unique environments for the initiation of HCV care, and failing to advance prevention and treatment programs would represent missed opportunities for HCV elimination.
Acknowledgments:
This article is part of a special topic series commissioned by the Canadian Network on Hepatitis C (CanHepC). CanHepC is funded by a joint initiative of the Canadian Institutes of Health Research (NHC-142832) and the Public Health Agency of Canada.
Ethics Approval:
N/A
Informed Consent:
N/A
Registry and Registration No. of The Study/ Trial:
N/A
Funding:
No funding was received for this work.
Disclosures:
The authors have nothing to disclose.
Peer Review:
This article has been peer reviewed.
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