

Virus Res. 2011 May 11. [Epub ahead of print]
The molecular epidemiology of hepatitis E virus infection.
Purdy MA, Khudyakov YE.
Source
Centers for Disease Control and Prevention National Center for HIV/Hepatitis/STD/TB Prevention Division of Viral Hepatitis MS-A33 1600 Clifton Rd NE Atlanta, GA 30333, United States.
Abstract
Molecular characterization of various hepatitis E virus (HEV) strains circulating among humans and animals (particularly swine, deer and boars) in different countries has revealed substantial genetic heterogeneity. The distinctive four-genotype distribution worldwide of mammalian HEV and varying degrees of genetic relatedness among local strains suggest a long and complex evolution of HEV in different geographic regions. The population expansion likely experienced by mammalian HEV in the second half of the 20th century is consistent with an extensive genetic divergence of HEV strains and high prevalence of HEV infections in many parts of the world, including developed countries. The rate and mechanisms of human-to-human transmission and zoonotic transmission to humans vary geographically, thus contributing to the complexity of HEV molecular evolution.
Copyright © 2011. Published by Elsevier B.V.
PMID:21600939[PubMed - as supplied by publisher]
The molecular epidemiology of hepatitis E virus in... [Virus Res. 2011] - PubMed result


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