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Molecular epidemiology of hepatitis A virus in patients in the ahwaz region of Iran

✍ Scribed by Ahmad Nejati; Manochehr Makvandi; Alireza Samarbafzadeh; Niloofar Neisi; Hamid Moradzadegan

Publisher
John Wiley and Sons
Year
2012
Tongue
English
Weight
126 KB
Volume
84
Category
Article
ISSN
0146-6615

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✦ Synopsis

Abstract

Hepatitis A virus (HAV) is one of the etiologic agents of acute viral hepatitis, an important public health problem worldwide. The aim of this study was to investigate the genetic diversity of HAV in Southwest Iran (Ahwaz). A total of 59 sera were collected from acutely ill patients with anti‐HAV IgM antibodies during 2009 and 2010 were tested also by RT‐PCR targeting the 5′ NCR for molecular diagnosis and examined in the VP1‐2A and VP3‐VP1 regions for genotyping. Twelve (20%) patients were detected VP1‐2A by RT‐PCR and 10 patients had VP3‐VP1. The resulting amplicons were sequenced for genotype identification. All HAV strains were identified as subgenotype IB. Phylogenetic analysis revealed an extensive genetic heterogeneity among the strains. Seven hundred sixty‐five S→F and 788 K→R amino acid substitutions in IRI49 isolate were found. It is concluded that subgenotype 1b is the sole genotype HAV in this region. J. Med. Virol. 84:582–586, 2012. © 2011 Wiley Periodicals, Inc.

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