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  • Title: Hepatitis C virus superinfection in hepatitis B virus chronic carriers: a reciprocal viral interaction and a variable clinical course.
    Author: Sagnelli E, Coppola N, Marrocco C, Onofrio M, Sagnelli C, Coviello G, Scolastico C, Filippini P.
    Journal: J Clin Virol; 2006 Mar; 35(3):317-20. PubMed ID: 16316779.
    Abstract:
    BACKGROUND: The virological and clinical impact of hepatitis C virus (HCV) superinfection in chronic hepatitis B virus (HBV) carriers has been poorly characterized. OBJECTIVE: To evaluate the viral interaction, clinical presentation and course of the disease in four HBsAg/HBV-DNA positive chronic hepatitis patients who developed acute HCV infection. STUDY DESIGN: To evaluate clinical, virological and laboratory data for at least 6 months from the onset of acute HCV infection in patients with chronic HBV infection. RESULTS: Three patients with acute HCV infection had a normal clinical course, but the remaining patient had severe disease with ascites and a marked decrease in prothrombin activity. In all cases, plasma HBV-DNA, which had been detectable prior to the HCV infection, was no longer detectable when the acute HCV infection occurred. The inhibition exerted by HCV on HBV-DNA persisted throughout the follow-up period in three patients, but was temporary in the one patient who experienced an acute exacerbation of chronic HBV infection. HCV-RNA became persistently undetectable in two patients and reduced to low levels in the other two. CONCLUSIONS: Acute HCV infection in the four HBV chronic carriers was characterized by a reciprocal inhibition of HBV-HCV genomes and, in one case, by a severe course of disease.
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