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. Barrett
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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