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Volume 9, Number 11—November 2003


Genetic Variation among Temporally and Geographically Distinct West Nile Virus Isolates, United States, 2001, 2002

C. Todd Davis*†, David W.C. Beasley*†, Hilda Guzman*†, Pushker Raj‡, Mary D’Anton‡, Robert J. Novak§, Thomas R. Unnasch¶, Robert B. Tesh*†, and Alan D.T. Barrett*†Comments to Author 
Author affiliations: *Center for Biodefense and Emerging Diseases, Galveston, Texas, USA; †University of Texas Medical Branch, Galveston, Texas, USA; ‡Texas Department of Health-Rabies/Arbovirus Section, Austin, Texas, USA; §Illinois Natural History Survey, Champaign, Illinois, USA; ¶University of Alabama at Birmingham, Birmingham, Alabama, USA

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Table 2

Nucleotide mutations in sequences of the E gene of 22 West Nile virus isolates obtained during 2001 and 2002 compared to WN-NY99a

Strain Envelope (1503 ntds)
969 1038 1065 1071 1118 (E51) 1137 1179 (E71) 1192 (E76) 1293 1356 1377 1442 (E159) 1443 1554 1557 1581 1728 1830 2094 2154 2190 2392 (E476) 2400 2466
WN-NY99 (AF196835) C U C U C (Ala) C A (Lys) A (Thr) C C C U (Val) U T C T A T A U U G (Ala) U C
Harris Co., TX (AY185906) C A
(Thr) U
Harris Co., TX (AY185907) U U C U
Nueces Co., TX - 1 U C C U
Nueces Co., TX - 2 U
(Val) U U C U
Gregg Co., TX C C U
Tarrant Co., TX C C U
Wichita Co., TX C U
Randall Co., TX U C
(Asn) C U
El Paso Co., TX C U
Illinois - 1 C U
Illinois - 2 C U C C U
Alabama - 1 C U
Alabama -2 C T U
Colorado C G U
Galveston Co., TX-1 (AY185914) U G
(Ala) U C C
Galveston Co., TX-2 (AY185913) U G U C C
Galveston Co., TX-3 U G U C C C
Jefferson Co., TX - 1 U G U C C
Jefferson Co., TX - 2 U C G U C C
Jefferson Co., TX - 3 U G U C C
Orange Co., TX U C G U C C

*Nucleotide (nt) numbers correspond to those of WN-NY99 (GenBank accession no. AF196835); in brackets for individual residues are the deduced amino acid changes.f

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