Volume 17, Number 5—May 2011
Research
Evolution of New Genotype of West Nile Virus in North America
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).