Figure 1. Phylogenetic comparison of WNV strains.
Phylogenetic relationships among WNV isolates used as competition strains. A MCC phylogeny constructed from the open reading frame of 112 WNV isolates is shown. The two emergent genotypes of WNV are indicated on the phylogeny by color: WN02 in blue lines and SW03 in orange lines. The 16 WN02 and SW03 competing strains are numbered and indicated by strain designation (See Table 1 for details).