Fig. 2

Maximum likelihood phylogenetic tree of the 20 complete genomes of EHV2 isolates. Two distinct groups are apparent (86–67-like and 1–141/67- like). Phylogenetic analysis was inferred by using the Maximum likelihood method based on the General Time Reversible model (GTR) using 1000 bootstrap replicates. The percentage (> 80%) of trees in which the associated taxa clustered together is shown next to branches. The trees were initially built by applying BioNJ method to a matrix of pairwise distances estimated using the Maximum Composite Likelihood (MCL) approach. The tree is drawn to scale, with branch lengths measured in the number of substitutions per site as indicated on the scale bar and bootstrap values are shown. Isolates in oval (red or black) indicate those recovered from the same horse