Genetic Analysis of West Nile Virus Isolates from an Outbreak in Idaho, United States, 2006–2007

West Nile virus (WNV) appeared in the U.S. in 1999 and has since become endemic, with yearly summer epidemics causing tens of thousands of cases of serious disease over the past 14 years. Analysis of WNV strains isolated during the 2006–2007 epidemic seasons demonstrates that a new genetic variant h...

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Main Authors: Grinev, Andriyan, Chancey, Caren, Añez, Germán, Ball, Christopher, Winkelman, Valerie, Williamson, Phillip, Foster, Gregory A., Stramer, Susan L., Rios, Maria
Format: Online
Language:English
Published: MDPI 2013
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3799518/
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spelling pubmed-37995182013-10-21 Genetic Analysis of West Nile Virus Isolates from an Outbreak in Idaho, United States, 2006–2007 Grinev, Andriyan Chancey, Caren Añez, Germán Ball, Christopher Winkelman, Valerie Williamson, Phillip Foster, Gregory A. Stramer, Susan L. Rios, Maria Article West Nile virus (WNV) appeared in the U.S. in 1999 and has since become endemic, with yearly summer epidemics causing tens of thousands of cases of serious disease over the past 14 years. Analysis of WNV strains isolated during the 2006–2007 epidemic seasons demonstrates that a new genetic variant had emerged coincidentally with an intense outbreak in Idaho during 2006. The isolates belonging to the new variant carry a 13 nt deletion, termed ID-Δ13, located at the variable region of the 3′UTR, and are genetically related. The analysis of deletions and insertions in the 3′UTR of two major lineages of WNV revealed the presence of conserved repeats and two indel motifs in the variable region of the 3′UTR. One human and two bird isolates from the Idaho 2006–2007 outbreaks were sequenced using Illumina technology and within-host variability was analyzed. Continued monitoring of new genetic variants is important for public health as WNV continues to evolve. MDPI 2013-09-23 2013-09 /pmc/articles/PMC3799518/ /pubmed/24065039 http://dx.doi.org/10.3390/ijerph10094486 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0/ This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Grinev, Andriyan
Chancey, Caren
Añez, Germán
Ball, Christopher
Winkelman, Valerie
Williamson, Phillip
Foster, Gregory A.
Stramer, Susan L.
Rios, Maria
spellingShingle Grinev, Andriyan
Chancey, Caren
Añez, Germán
Ball, Christopher
Winkelman, Valerie
Williamson, Phillip
Foster, Gregory A.
Stramer, Susan L.
Rios, Maria
Genetic Analysis of West Nile Virus Isolates from an Outbreak in Idaho, United States, 2006–2007
author_facet Grinev, Andriyan
Chancey, Caren
Añez, Germán
Ball, Christopher
Winkelman, Valerie
Williamson, Phillip
Foster, Gregory A.
Stramer, Susan L.
Rios, Maria
author_sort Grinev, Andriyan
title Genetic Analysis of West Nile Virus Isolates from an Outbreak in Idaho, United States, 2006–2007
title_short Genetic Analysis of West Nile Virus Isolates from an Outbreak in Idaho, United States, 2006–2007
title_full Genetic Analysis of West Nile Virus Isolates from an Outbreak in Idaho, United States, 2006–2007
title_fullStr Genetic Analysis of West Nile Virus Isolates from an Outbreak in Idaho, United States, 2006–2007
title_full_unstemmed Genetic Analysis of West Nile Virus Isolates from an Outbreak in Idaho, United States, 2006–2007
title_sort genetic analysis of west nile virus isolates from an outbreak in idaho, united states, 2006–2007
description West Nile virus (WNV) appeared in the U.S. in 1999 and has since become endemic, with yearly summer epidemics causing tens of thousands of cases of serious disease over the past 14 years. Analysis of WNV strains isolated during the 2006–2007 epidemic seasons demonstrates that a new genetic variant had emerged coincidentally with an intense outbreak in Idaho during 2006. The isolates belonging to the new variant carry a 13 nt deletion, termed ID-Δ13, located at the variable region of the 3′UTR, and are genetically related. The analysis of deletions and insertions in the 3′UTR of two major lineages of WNV revealed the presence of conserved repeats and two indel motifs in the variable region of the 3′UTR. One human and two bird isolates from the Idaho 2006–2007 outbreaks were sequenced using Illumina technology and within-host variability was analyzed. Continued monitoring of new genetic variants is important for public health as WNV continues to evolve.
publisher MDPI
publishDate 2013
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3799518/
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