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Table 3 Percentage of antimicrobial resistant strains for the two main Typhimurium STs.

From: Association of virulence plasmid and antibiotic resistance determinants with chromosomal multilocus genotypes in Mexican Salmonella enterica serovar Typhimurium strains

  Antimicrobial resistance
  AMPa CHL SSS STR TET GM KM NAL SXT CIPb CRO
ST19 61 51 75 80 75 7 10 10 22 0 0
ST213(cmy-2)c 68 (97) 90 (94) 98 (97) 97 (97) 97 (100) 59 (55) 37 (33) 72 (61) 82 (92) 0 53 (100)
  1. a AMP:ampicillin, CHL: chloramphenicol, SSS: sulfisoxazole, STR: streptomycin, TET: tetracycline, GM: gentamicin, KM: kanamycin, NAL: nalidixic acid, SXT: timethoprim-sulfametoxazole, CIP: ciprofloxacin, CRO: ceftriaxone.
  2. b All the strain were sensitive to CIP according with CLSI [78], including twelve strains with low-level resistance [see Additional file 2].
  3. c The number in parenthesis is the percentage corresponding to ST213 strains positive for cmy-2.