Continued Evolution of West Nile Virus, Houston, Texas, USA, 2002-2012

被引：29

作者：

Mann, Brian R. ^{[1
]}

McMullen, Allison R. ^{[1
]}

Swetnam, Daniele M. ^{[1
]}

Salvato, Vence ^{[2
]}

Reyna, Martin ^{[2
]}

Guzman, Hilda ^{[1
]}

Bueno, Rudy, Jr. ^{[2
]}

Dennett, James A. ^{[2
]}

Tesh, Robert B. ^{[1
]}

Barrett, Alan D. T. ^{[1
]}

机构：

[1] Univ Texas Med Branch, Galveston, TX 77555 USA

[2] Harris Cty Publ Hlth & Environm Serv, Houston, TX USA

来源：

EMERGING INFECTIOUS DISEASES | 2013年 / 19卷 / 09期

基金：

美国国家卫生研究院;

关键词：

PHYLOGENETIC ANALYSIS; SEQUENCE ALIGNMENT; SUBURBAN CHICAGO; NEW-YORK; EPIDEMIOLOGY; DATAMONKEY; GENOTYPE; DYNAMICS; STRAINS; SITES;

D O I：

10.3201/eid1909.130377

中图分类号：

R392 [医学免疫学]; Q939.91 [免疫学];

学科分类号：

071005 [微生物学]; 100108 [医学免疫学];

摘要：

We investigated the genetics and evolution of West Nile virus (WNV) since initial detection in the United States in 1999 on the basis of continual surveillance studies in the Houston, Texas, USA, metropolitan area (Harris County) as a surrogate model for WNV evolution on a national scale. Full-length genomic sequencing of 14 novel 2010-2012 WNV isolates collected from resident birds in Harris County demonstrates emergence of 4 independent genetic groups distinct from historical strains circulating in the greater Houston region since 2002. Phylogenetic and geospatial analyses of the 2012 WNV isolates indicate closer genetic relationship with 2003-2006 Harris County isolates than more recent 2007-2011 isolates. Inferred monophyletic relationships of these groups with several 2006-2009 northeastern US isolates supports potential introduction of a novel WNV strain in Texas since 2010. These results emphasize the need to maintain WNV surveillance activities to better understand WNV transmission dynamics in the United States.

引用

页码：1418 / 1427

页数：10

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