Figure 2.

Maximum likelihood phylogeny of P. multocida. The phylogenetic tree was reconstructed based on SNPs in the core genomes of P. multocida strains using the Parsnp program (Treangen et al., 2014). Phylogenetic group was manually set and designated as groups I, II, III, and IV. All strains are color-coded according to their serotypes A, B, D, and F. The host origin of each strain is denoted by the right color strip with the same scheme as in Figure 1. The geographical location of isolation for each strain is shown. The gray box labeled as NA indicates the metadata is not available for the related strains.