FIG. 1.

Maximum likelihood phylogenetic tree depicting the relationships of the 62 historical rabies virus isolates. The tree is rooted at the midpoint for purposes of clarity. The tree is based on 164 nucleotides of the N gene, corresponding to positions 1123 to 1287 of the Pasteur RV N gene (GenBank accession no. A492968) and generated with the PAUP* program (20). Samples within the clear box are those NCSK samples typed by the TaqMan PCR assay as CASK. Samples within the gray boxes are those that were weakly positive or negative by TaqMan PCR.