Persistent hepatitis C viremia after acute self-limiting posttransfusion hepatitis C

Area of Science:

• Hepatology and Virology
• Infectious Diseases
• Immunology

Background:

• Chronic hepatitis C is associated with persistent hepatitis C virus (HCV) replication.
• Limited data exists on HCV replication duration in recovered acute hepatitis C patients.
• The relationship between HCV viremia and anti-HCV antibody kinetics is not well understood.

Purpose of the Study:

• To investigate the duration of HCV replication in patients with acute hepatitis C.
• To examine the correlation between HCV viremia and the kinetics of anti-HCV antibodies.
• To differentiate viral kinetics in patients who recover versus those who progress to chronic liver disease.

Main Methods:

• Serial serum samples from 41 posttransfusion non-A, non-B hepatitis patients were analyzed over 6 years.
• HCV-RNA was quantified using nested polymerase chain reaction (PCR).
• Antibodies to HCV (anti-HCV) were detected using first- and second-generation ELISAs and a second-generation recombinant immunoblot assay.

Main Results:

• HCV-RNA was detected pre- or simultaneously with hepatitis onset in all patients.
• In recovered patients (10/41), HCV-RNA lasted 2-6 weeks in 5 cases; it persisted long-term in the other 5.
• HCV-RNA persisted throughout the follow-up in all patients who progressed to chronic liver disease (31/41).

Conclusions:

• HCV replication duration varies significantly in acute hepatitis C, with some patients clearing the virus and others experiencing prolonged viremia.
• Persistent HCV viremia is characteristic of chronic hepatitis C.
• Second-generation anti-HCV assays demonstrate higher sensitivity in early detection compared to first-generation assays.