Endemic Venezuelan Equine Encephalitis in Northern Peru
Figure 4. Unrooted phylogenetic tree of the Venezuelan equine encephalitis virus (VEEV) complex and other representative alphaviruses derived from complete structural polyprotein sequences using the neighbor joining program implemented in PAUP 4.0 (22). Viruses are labeled by species according to the International Committee for Taxonomy of Viruses (27). VEEV subtype IIIC and IIID strain names are in parentheses. Numbers indicate bootstrap values for clades to the right.