Dynamic coinfection with multiple viral subtypes in acute hepatitis C

Smith, J.A., Aberle, J.H., Fleming, V.M., Ferenci, P., Thomson, E.C. , Karayiannis, P., McLean, A.R., Holzmann, H. and Klenerman, P. (2010) Dynamic coinfection with multiple viral subtypes in acute hepatitis C. Journal of Infectious Diseases, 202(12), pp. 1770-1779. (doi:10.1086/657317)

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Abstract

<b>Introduction.</b> Acute hepatitis C virus (HCV) infection is rarely studied, but virus sequence evolution and hostvirus 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.<p></p> <b>Methods.</b> 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.<p></p> <b>Results.</b> 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.<p></p> <b>Conclusions.</b> 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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Thomson, Professor Emma
Authors: Smith, J.A., Aberle, J.H., Fleming, V.M., Ferenci, P., Thomson, E.C., Karayiannis, P., McLean, A.R., Holzmann, H., and Klenerman, P.
College/School:College of Medical Veterinary and Life Sciences > Institute of Infection Immunity and Inflammation
Journal Name:Journal of Infectious Diseases
Journal Abbr.:J Infect Dis.
ISSN:0022-1899
ISSN (Online):1537-6613

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