Figure 5

Phylogenetic relationship of the full-length glycoprotein (G) sequences of 48 VHSV strains. Genotypes and sublineages are depicted by bold vertical lines, as described by Einer-Jensen et al. (2004) and Elsyad et al., 2006. The Great Lakes strain MI03GL (circled) forms different sublineage IVb, whereas rest of the North American VHSV isolates falls under sublineage IVa. Data of virus isolates used here are shown in Table 2. Phylogenetic tree analysis was conducted by neighbor-joining method using 1000 bootstrap replications. The scale at the bottom indicates the number of substitution events and bootstrap confidence values are shown at branch nodes.