The prison setting presents not only challenges, but also opportunities, for the prevention and treatment of HIV, viral hepatitis, and tuberculosis. We did a comprehensive literature search of data published between 2005 and 2015 to understand the global epidemiology of HIV, hepatitis C virus (HCV), hepatitis B virus (HBV), and tuberculosis in prisoners. We further modelled the contribution of imprisonment and the potential impact of prevention interventions on HIV transmission in this population. Of the estimated 10·2 million people incarcerated worldwide on any given day in 2014, we estimated that 3·8% have HIV (389 000 living with HIV), 15·1% have HCV (1 546 500), 4·8% have chronic HBV (491 500), and 2·8% have active tuberculosis (286 000). The few studies on incidence suggest that intraprison transmission is generally low, except for large-scale outbreaks. Our model indicates that decreasing the incarceration rate in people who inject drugs and providing opioid agonist therapy could reduce the burden of HIV in this population. The prevalence of HIV, HCV, HBV, and tuberculosis is higher in prison populations than in the general population, mainly because of the criminalisation of drug use and the detention of people who use drugs. The most effective way of controlling these infections in prisoners and the broader community is to reduce the incarceration of people who inject drugs.

Substantial reductions in hepatitis C virus (HCV) prevalence among people who inject drugs (PWID) cannot be achieved by harm reduction interventions such as needle exchange and opiate substitution therapy (OST) alone. Current HCV treatment is arduous and uptake is low, but new highly effective and tolerable interferon-free direct-acting antiviral (DAA) treatments could facilitate increased uptake. We projected the potential impact of DAA treatments on PWID HCV prevalence in three settings. A dynamic HCV transmission model was parameterized to three chronic HCV prevalence settings: Edinburgh, UK (25%); Melbourne, Australia (50%); and Vancouver, Canada (65%). Using realistic scenarios of future DAAs (90% sustained viral response, 12 weeks duration, available 2015), we projected the treatment rates required to reduce chronic HCV prevalence by half or three-quarters within 15 years. Current HCV treatment rates may have a minimal impact on prevalence in Melbourne and Vancouver (<2% relative reductions) but could reduce prevalence by 26% in 15 years in Edinburgh. Prevalence could halve within 15 years with treatment scale-up to 15, 40, or 76 per 1,000 PWID annually in Edinburgh, Melbourne, or Vancouver, respectively (2-, 13-, and 15-fold increases, respectively). Scale-up to 22, 54, or 98 per 1,000 PWID annually could reduce prevalence by three-quarters within 15 years. Less impact occurs with delayed scale-up, higher baseline prevalence, or shorter average injecting duration. Results are insensitive to risk heterogeneity or restricting treatment to PWID on OST. At existing HCV drug costs, halving chronic prevalence would require annual treatment budgets of US $3.2 million in Edinburgh and approximately $50 million in Melbourne and Vancouver. Conclusion: Interferon-free DAAs could enable increased HCV treatment uptake among PWID, which could have a major preventative impact. However, treatment costs may limit scale-up, and should be addressed. (Hepatology 2013;58:1598–1609)

investments to support countries with greatest burden of viral hepatitis All heavily burdened countries to have fully funded elimination plans by 2019 Recognition of need to focus on high burden countries and support for national policy development (All) Funding for national elimination plans Creation of fiscal space for new programmes with costed investment programmes Adopt domestic innovative finance tools where appropriate Support national policy makers in their activity (WHO, UNITAID, NGOs) Provide international support for financing measures (UNITAID, GFATM, bilaterial donors) Prevention Ensure all WHO elimination targets addressed in plans Address operational challenges in delivery of birth dose HBV vaccine Ensure provision of harm reduction services and engage with marginalised group (e.g. prisoners, PWIDs). Ensure clear public health messages to encourage testing and treatment Support countries to decriminalise injecting drug use and ensure equitable access to services for all (NGOs, WHO, civil society) Ensure appropriate funding for HBV vaccine, including birth dose (GAVI, WHO) Support R&D into HCV vaccine development (Research funders and pharma) Testing and Models of Care Focus on substantially scaling up testing for HBV and HCV Create and evaluate simplified care pathways relevant to local setting, integrating with existing services. Promote task sharing and decentralisation of care through capacity building, training and removal of Support operational research into simplified pathways (Research funders, UNITAID) requirements for specialised prescribing Diagnostics Ensure testing is integrated into the wider healthcare system, rather than centralised facilties Ensure access to quality diagnostics through Essential Diagnostic List and prequalification (WHO, funders) Support implementation science for models of care and R&D into novel diagnostics suitable for decentralised settings. (Research funders, FIND, industry) Access to treatment Ensure all Essential Medicines for viral hepatitis are included in national programmes, with an emphasis on pan-genotypic regimens Apply comprehensive policy approach to promoting access, including compulsory licensing Ensure all essential medicines are pre-qualified and either available through voluntary licensing or Medicines Patent Pool (WHO, NGOs, civil society, funders) Support shared procurement mechanisms for treatment (PAHO) Monitor Progress National plans need clearly defined, measurable objectives Develop new indices of national progress Progress of individual countries needs to be closely monitored towards elimination goals (Polaris, WHO, Creation of Elimination Index) Develop greater capacity for advocacy in high burden regions (all) Viral hepatitis is one of the leading causes of death in the world. 96% of those deaths are due to hepatitis B and C, which are the focus of this commission. Unlike many other major diseases, the tools exist to eliminate viral hepatitis. A highly effective vaccine is available to prevent hepatitis B, and a revolution in HCV treat...

Although 20–40% of persons with acute HCV infection demonstrate spontaneous clearance, the time-course and factors associated with clearance remain poorly understood. We investigated the time to spontaneous clearance and predictors among participants with acute HCV using Cox proportional hazards analyses. Data for this analysis were drawn from an international collaboration of nine prospective cohorts evaluating outcomes following acute HCV infection. Among 632 participants with acute HCV, 35% were female, 82% were Caucasian, 49% had IL28B CC genotype (rs12979860), 96% had injected drugs ever, 47% were infected with HCV genotype 1 and 5% had HIV co-infection. Twenty-eight percent were HCV antibody negative/RNA positive at the time of acute HCV detection (early acute HCV). During follow-up, spontaneous clearance occurred in 173 of 632 and at one year following infection, 25% (95%CI: 21%, 29%) had cleared virus. Among those with clearance, the median time to clearance was 16.5 weeks (IQR: 10.5, 33.4 weeks), with 34%, 67% and 83% demonstrating clearance at three, six and twelve months. Adjusting for age, factors independently associated with time to spontaneous clearance included female sex [adjusted hazards ratio (AHR) 2.16; 95%CI 1.48, 3.18], IL28B CC genotype (vs. CT/TT, AHR 2.26; 95%CI 1.52, 3.34), and HCV genotype 1 (vs. non-genotype 1, AHR 1.56; 95%CI 1.06, 2.30). The effect of IL28B genotype and HCV genotype on spontaneous clearance was greater among females compared to males. Conclusions Female sex, favorable IL28B genotype and HCV genotype 1 are independent predictors of spontaneous clearance. Further research is required to elucidate the observed sex-based differences in HCV control.

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