Whole-genome phylogenetic tree of mouse Kp isolates compared with representative Klebsiella spp. genomes. The Kp mouse genomes were most similar to classic Kp strains with multidrug antibiotic resistance profiles that had been isolated from humans. # Drug Res. Classes, number of antibiotic resistant gene classes; Aer, aerobactin; Clb, colibactin; K, K capsule antigen type; MLST, multilocus sequence type; O, O antigen type; rpmA, regulator of mucoid phenotype A; rpmA2, regulator of mucoid phenotype A2; Sal, salmochelin; Yer, yersiniabactin.