Evolutionary relationship between Old World West Nile virus strains - Evidence for viral gene flow between Africa, the Middle East, and Europe

被引：109
作者：
Charrel, RN
Brault, AC
Gallian, P
Lemasson, JJ
Murgue, B
Murri, S
Pastorino, B
Zeller, H
de Chesse, R
de Micco, P
de Lamballerie, X
机构：
[1] Fac Med Marseille, Unite Virus Emergents, F-13005 Marseille, France
[2] Inst Med Trop, IFR48 IRD, URO37, Serv Sante Armees, Marseille, France
[3] CDCP, Div Vector Borne Infect Dis, Ft Collins, CO USA
[4] Inst Pasteur, Ctr Ref Arbovirus & Fievres Hemorragiques Virales, Unite Biol Infect Virales Emergentes, Lyon, France
来源：
VIROLOGY | 2003年 / 315卷 / 02期
关键词：
D O I：
10.1016/S0042-6822(03)00536-1
中图分类号：
Q93 [微生物学];
学科分类号：
071005 ; 100705 ;
摘要：
Little is known about the genetic relationships between European and other Old-World strains of West Nile virus (WNV) and persistence of WNV North of Mediterranean. We characterized the complete genomes of three WNV strains from France (horse-2000), Tunisia (human-1997) and Kenya (mosquito-1998), and the envelope, NS3 and NS5 genes of the Koutango virus. Phylogenetic analyses including all available full-length sequences showed that: (1) Koutango virus is a distant variant of WNV; (2) the three characterized strains belong to lineage 1, clade la; (3) the Tunisian strain roots the lineage of viruses introduced in North America. We established that currently available partial envelope sequences do not generate reliable phylogenies. Accordingly, establishing a large WNV sequence database is pivotal for the understanding of spatial and temporal epidemiology of this virus. For rapid completion of that purpose, colinearized E-NS3-NS5 gene sequences were shown to constitute a valuable surrogate for complete sequences. (C) 2003 Elsevier Inc. All rights reserved.
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收藏
页码：381 / 388
页数：8
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