The goal ofthis clinical core is to provide high numbers of samples of PBMC from subjects with acute / early phase HCV infecfion, allowing large-scale studies of immunologic parameters for investigators throughout the collaborative center. Funding of this core would allow continued identification of acute / early stage HCV infection in the Massachusetts State Prison system. Rationale includes the high number of young injection drug users entering the prison systems yearty, who are therefore at risk for HCV infection. The identification of acute HCV had traditionally been reliant on symptoms or laboratory abnormalities rather than exposure history, but our prior funding period established a system based on history-based risk factors to screen for early-stage HCV infecfion. This brief 1-2 minute quesfionnaire was designed to assist providers in identifying persons at nsk for recent acquisition of HCV by injection drug use. The successful implementation in the MA state prison system identified a large number () of persons with acute HCV over a short period of time. In addition, longitudinal sample acquisifion was greafiy enhanced by this project. This represents the first systematic study of acute HCV among persons entering the prison system, providing critical information regarding the overall prevalence, clinical characteristics, and treatment outcomes of acute HCV in incarcerated individuals. Funding from this clinical core would allow continuafion ofthis unique and valuable resource for both members ofthis Collaborative Center as well as allow collaboration with other groups examining questions not being addressed directly by this grant.

Public Health Relevance

This core is complementary to the Brazilian cohort, insofar that it provides samples from injection drug users, whose immunologic parameters may differ in key aspects from those with other modes of acquisition of HCV. The high quality of the samples and ability to obtain longitudinal samples is also relevant and crifical to the success of the other projects contained within this application.

National Institute of Health (NIH)
National Institute of Allergy and Infectious Diseases (NIAID)
Research Program--Cooperative Agreements (U19)
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Special Emphasis Panel (ZAI1-BP-M (J1))
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Massachusetts General Hospital
United States
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