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Volume 17, Number 5—May 2011

Research

Evolution of New Genotype of West Nile Virus in North America

Allison R. McMullen, Fiona J. May, Li Li, Hilda Guzman, Rudy Bueno, James A. Dennett, Robert B. Tesh, and Alan D.T. BarrettComments to Author 
Author affiliations: Author affiliations: University of Texas Medical Branch, Galveston, Texas, USA (A.R. McMullen, F.J. May, L. Li, H. Guzman, R.B. Tesh, A.D.T. Barrett); Harris County Public Health and Environmental Services, Houston, Texas, USA (R. Bueno, Jr., J.A. Dennett)

Main Article

Table 3

Percentage nucleotide and amino acid sequence divergence of West Nile virus isolates, Upper Texas Gulf Coast, USA, 2002–2009*

Group† NY99 Group 1 Group 2 Group 3 Group 4 Group 5 Group 6
NY99 0.1–0.2 0.1–0.2 0.1 0.1–0.2 0.2 0.2–0.3
Group 1 0.3–0.4 0.1–0.3 0.1–0.3 0.1–0.3 0.2–0.3 0.2–0.4
Group 2 0.3 0.3–0.4 0.1–0.2 0.2–0.3 0.2–0.3 0.2–0.3
Group 3 0.3 0.1–0.4 0.2–0.3 0.1–0.3 0.2–0.3 0.2–0.3
Group 4 0.5–0.6 0.5–0.7 0.5–0.6 0.5–0.6 0.2–0.3 0.2–0.3
Group 5 0.5–0.7 0.5–0.8 0.4–0.7 0.4–0.7 0.7–1.0 0.3
Group 6 0.4–0.5 0.4–0.6 0.4–0.5 0.4–0.5 0.7–0.8 0.6–0.8

*Amino acid sequence divergence is shown above the diagonal, and nucleotide sequence divergence is shown in below the diagonal.
†Group 1: bird 114 (2002), bird 1171 (2003), bird 1153 (2003); group 2: bird 1519 (2003), v4369 (2003), v4095 (2003), bird 1881 (2003), v4380 (2003); group 3: bird 1576 (2003), bird 1175 (2003), TX2003; group 4: TX6376 (2006), M20141 (2009), M20140 (2009), M37906 (2009), M39488 (2009), M20122 (2009), M37102 (2009); group 5: M12214 (2005), M19433 (2007), TX6647 (2007), TX7558 (2008); group 6: M6019 (2006), TX5810 (2006).

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