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Levels of hepatitis C virus higher among African-Americans and males
Date:7/10/2012

Epidemiologists have determined that levels of hepatitis C virus (HCV) found among injection drug users (IDUs) were higher in individuals who are male or African American even after differences in other factors were considered. The study, which was funded by the National Cancer Institute and performed with collaborators from the National Institutes of Health Clinical Center and the University of California - San Francisco, was the first to simultaneously examine the association of demographic, viral and human genetic factors on HCV RNA levels. Results of the study published in the July issue of Hepatology, a journal of the American Association for the Study of Liver Diseases (AASLD), also showed higher levels of HCV among IDUs who were co-infected with human immunodeficiency virus (HIV).

A 2010 report from the Centers for Disease Control and Prevention (CDC) estimates that up to 3.9 million Americans have chronic HCVa leading cause of liver cancer, end-stage liver disease and liver transplantation. According to the CDC 17,000 new cases and 2,800 acute cases of HCV were reported in 2010. Previous epidemiologic studies suggest one-third of those 18 to 30 year-old IDUs and up to 90% of older IDUs are infected with HCV.

"With such a high incidence and prevalence of hepatitis C virus infection among IDUs, it is important to understand the characteristics of the infection in this group," explains lead author Dr. Thomas O'Brien of the Division of Cancer Epidemiology and Genetics at the National Cancer Institute in Rockville, MD. "The HCV RNA level is an important predictor of response to treatment in patients with chronic hepatitis C. Our study is the first to examine simultaneously the viral, demographic, and genetic factors that impact HCV levels in ethnically diverse IDUs."

Participants were originally recruited for the Urban Health Studya multi-ethnic group of IDUs in San Francisco. Researchers used interview data and biologica
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Contact: Dawn Peters
sciencenewsroom@wiley.com
781-388-8408
Wiley
Source:Eurekalert

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