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(A) Phylogenetic tree obtained from quinolone-, 4th-generation cephalosporin-, and monobactam-resistant Salmonella genomes (n = 1,643). 4GC, 4th-generation cephalosporin. (B) Subtree of Salmonella Infantis. Lack of a tip symbol indicates poultry origin. (C) Subtree of Salmonella Dublin. Lack of a tip symbol indicates bovine origin. (D) Subtree of Salmonella Typhimurium/I 4,[5],12:i:−. Lack of a tip symbol indicates swine origin.
