Dynamic Coinfection with Multiple Viral Subtypes in Acute Hepatitis C

Overview

Journal J Infect Dis

Publisher Oxford University Press

Specialty Infectious Diseases

Date 2010 Nov 12

PMID 21067369

Citations 19

Authors

Jennifer A Smith

Judith H Aberle

Vicki M Fleming

Peter Ferenci

Emma C Thomson

Peter Karayiannis

Angela R McLean

Heidemarie Holzmann

Paul Klenerman

Affiliations

Soon will be listed here.

Abstract

Introduction: Acute hepatitis C virus (HCV) infection is rarely studied, but virus sequence evolution and host-virus dynamics during this early stage may influence the outcome of infection. Hypervariable region 1 (HVR1) is genetically diverse and under selective pressure from the host immune response. We analyzed HVR1 evolution by frequent sampling of an acutely infected HCV cohort.

Methods: Three or more pretreatment samples were obtained from each of 10 acutely infected subjects. Polymerase chain reaction amplification was performed with multiple primer combinations to identify the full range of sequences present. Positive samples were cloned and sequenced. Phylogenetic analyses were used to assess viral diversity.

Results: Eight of the 10 subjects were coinfected with at least 2 HCV subtypes. Multiple subtypes were detected in individual samples, and their relative proportions changed through acute infection. The subjects with the most complex subtype structure also had a dynamic viral load; however, changes in viral load were not directly linked to changes in subtype.

Conclusions: This well-sampled cohort with acute HCV infection was characterized by dynamic coinfection with multiple viral subtypes, representing a highly complex virologic landscape extremely early in infection.

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