FIGURE 3.

Whole genome and ORF 1a/b phylogenetic analysis of Peruvian PDCoV strain reveals its evolutionary origin from a North American PDCoV strain. For both whole genome and ORF 1a/b, the evolutionary history was inferred by using the maximum likelihood method and general time reversible model. The percentage of trees in which the associated taxa clustered together is shown next to the branches. A discrete gamma distribution was used to model evolutionary rate differences among sites. The tree is drawn to scale, with branch lengths measured in the number of substitutions per site. The whole genome analysis involved 45 nucleotide sequences, whereas the ORF 1 a/b involved 24 nucleotide sequences. Evolutionary analyses were conducted in MEGA X