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Multiple infections with different HCV genotypes: prevalence and clinical impact
Matthias Schröter1, Heinz-Hubert Feucht, Bernhard Zöllner
1Institut für Medizinische Mikrobiologie und Immunologie, Universitätsklinikum Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany. mschroet@uke.uni-hamburg.de
Summary
Multiple hepatitis C virus (HCV) infections can occur, with one strain dominating during treatment. Previously suppressed strains may re-emerge, impacting therapy outcomes and requiring careful pre-treatment assessment.
Area of Science:
- Hepatology
- Virology
- Infectious Diseases
Background:
- Hepatitis C virus (HCV) infections can involve multiple genotypes.
- Coinfection with different HCV strains can complicate treatment and diagnosis.
Purpose of the Study:
- To investigate the epidemiology of multiple HCV infections.
- To understand the therapeutic consequences for patients superinfected with new HCV strains.
Main Methods:
- Screening of 600 patient sera for multiple HCV genotypes using parallel sequencing and serological assays.
- Analysis of longitudinal samples to track viral dynamics.
Main Results:
- 13 out of 600 patients showed infection with two different HCV types.
- In serial infections, one HCV strain typically prevails as the viremic virus.
- Previously undetected or suppressed strains can re-emerge during antiviral therapy.
Conclusions:
- The prevailing HCV strain can influence therapeutic outcomes.
- Detecting minor or previously suppressed strains before treatment is crucial for selecting appropriate regimens.
- Understanding complex HCV infections is vital for effective patient management.