Hepatitis C virus care cascade in persons experiencing homelessness in the United States in the era of direct-acting antiviral agents: A scoping review.

The hepatitis C virus (HCV) care cascade has been well characterized in the general United States population and other subpopulations since curative medications have been available. However, information is limited on care cascade outcomes in persons experiencing homelessness. The main objective of this study was to map the available evidence on HCV care cascade outcomes in people experiencing homelessness in the U.S. in the era of direct-acting antiviral agents (DAAs). Primary and secondary outcomes included linkage to care (evaluation by a provider that can treat HCV) and sustained virologic response (SVR) or cure. Exploratory outcomes included other cascade data, like treatment initiation, which precedes SVR. PubMed was the primary database accessed for this scoping review. We characterized the HCV care cascade in people experiencing homelessness using sources of evidence published in 2014 onwards that reported the proportions of persons who were linked to care, achieved SVR, and completed other cascade steps. We synthesized our results into a scoping review. The proportion of persons linked to care among chronically infected cohorts with unstable housing ranged from 29.3% to 88.7%. Among those chronically infected, 5%-58.8% were started on DAAs and 5%-50% achieved SVR. In conclusion, these results show that persons experiencing homelessness achieve high rates of linkage to care in non-specialist community-based settings compared to the general U.S. population pre-DAAs. However, DAA initiation was found to be a rate-limiting step along the care cascade, resulting in commensurate low rates of cure.

Buprenorphine shared medical appointments for the treatment of opioid dependence in a homeless clinic.

BACKGROUND: Opioid misuse and dependence are prevalent and rising problems in the United States. Treatment with buprenorphine is a successful treatment option for individuals with opioid dependence. This study describes and preliminarily evaluates a unique delivery system that provides buprenorphine treatment via a shared medical appointment. METHODS: A retrospective medical record review on all 77 opioid-dependent patients referred for a buprenorphine shared medical appointment in a homeless clinic from 2010 to 2012. RESULTS: Most patients were currently homeless (61%), unemployed (92%), had an Axis I psychiatric diagnosis (81%), and had recent polysubstance use (53%). Of the 77 patients, 95% attended at least 1 shared medical appointment. Treatment retention at 12 and 24 weeks was 86% and 70%, respectively. CONCLUSIONS: In a patient population with complex social and mental health histories, buprenorphine treatment via a shared medical appointment had high retention rates. Findings can help guide the development of unique delivery systems to serve real-world complex patients with opioid dependence.

A unique model for treating chronic hepatitis C in patients with psychiatric disorders, substance abuse, and/or housing instability.

BACKGROUND: Individuals with psychiatric disease, substance abuse, and/or housing instability have a high prevalence of chronic hepatitis C virus (HCV) infection. However, such individuals are often excluded from treatment for HCV infection because of a perceived inability to adhere to the rigorous medication regimen required. METHODS: A pilot program using a multidisciplinary group medical visit model to treat HCV infection in the aforementioned population was created. Medication adherence and virologic response rates were prospectively followed. RESULTS: Approximately 80% of patients were adherent to their HCV infection treatment regimen, as measured by attendance at group medical visits and by medication adherence. A sustained virologic response rate of 55% among individuals with genotype 1 infection and 80% among individuals with genotype 2 or 3 infections was observed. These results compare favorably with those seen in large, randomized controlled trials. Rates of discontinuation and adverse effects were similar to those seen in other studies. CONCLUSIONS: An intensive, multidisciplinary treatment approach toward HCV infection treatment can achieve favorable results even in persons traditionally considered to be "poor treatment candidates." Programs aimed at bringing HCV infection treatment to this population are needed.

Communicable and non-communicable diseases among recent immigrants with implications for primary care; a comprehensive immigrant health approach.

Data on health status of immigrants and practice recommendations for providers are scarce. We evaluated 99 recent immigrants from developing nations in an immigrant clinic in New York City to assess epidemiology of diseases and to recommend potential screening. Providers received ongoing training. Majority patient was from West Africa and Central America with a mean of 2.1 years in the US. Two thirds were uninsured. Half had positive PPD. Half had prior hepatitis B infection, which was higher in Africans. One quarter had intestinal parasites. Two thirds were overweight; 33% had hypercholesterolemia, 26% were hypertensive, and 25% of women had a Pap smear previously. Eosinophila was higher in African and males (P < 0.05) but didn't predict stool O&P. Recent immigrants were at risk for chronic non-communicable diseases, similar to the US population. Providers should balance their focus on communicable and non-communicable diseases. We recommend practice-based training and on-site comprehensive health services.