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Volume 9, Number 11—November 2003

Research

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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Figure 2

Phylogram based on maximum parsimony analysis comparing a 2,004-nucleotide sequence of WN-NY99 (GenBank accession no. AF196835) with 22 West Nile virus asolates collected during 2001 and 2002.

Figure 2. . Phylogram based on maximum parsimony analysis comparing a 2,004-nucleotide sequence of WN-NY99 (GenBank accession no. AF196835) with 22 West Nile virus asolates collected during 2001 and 2002.

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