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. 2016 Mar 25;60(4):2505–2508. doi: 10.1128/AAC.02788-15

TABLE 1.

Epidemiological and microbiological characteristics of CTX-M-15-producing E. coli strains isolated from commercial swine, E. coli TOP10 (transformed) and E. coli TOP10

E. coli strain Farm/stateb/yr ST/phylogroup MIC (μg/ml)c for:
AMP CEF CTX CRO EFT CPD CAZ FEP FOX IPM MER CIP ENO NOR GEN AMI TET SUL SXT
180A X/MG/2012 224/B1 ≥32 ≥32 ≥128 ≥256 ≥128 ≥64 16 16 8 ≤0.5 ≤1 ≥64 ≥64 ≥128 ≥32 16 ≥128 ≥512 ≥32
T-180A ≥32 ≥32 32 8 16 ≥64 4 2 ≤4 ≤0.5 ≤1 0.0035 0.007 0.06 ≤4 2 4 ≤12 ≤2
180B X/MG/2012 224/B1 ≥32 ≥32 ≥128 ≥256 ≥128 ≥64 16 16 16 ≤0.5 ≤1 ≥64 ≥64 ≥128 ≥32 16 ≥128 ≥512 ≥32
181 X/MG/2012 224/B1 ≥32 ≥32 ≥128 ≥256 ≥128 ≥64 16 8 8 ≤0.5 ≤1 ≥64 ≥64 ≥128 ≥32 16 ≥128 ≥512 ≥32
T-181 ≥32 ≥32 ≥128 ≥256 ≥128 ≥64 16 8 8 ≤0.5 ≤1 0.0035 0.007 0.12 ≥32 2 ≥128 ≥512 ≤2
187a X/MG/2012 224/B1 ≥32 ≥32 ≥128 ≥256 ≥128 ≥64 16 16 16 ≤0.5 ≤1 ≥64 ≥64 ≥128 ≥32 16 ≥128 ≥512 ≥32
T-187a ≥32 ≥32 ≥128 128 ≥128 ≥64 16 8 ≤4 ≤0.5 ≤1 0.0035 0.0035 0.06 ≥32 2 4 ≥512 ≤2
188 X/MG/2012 224/B1 ≥32 ≥32 ≥128 ≥256 ≥128 ≥64 16 16 16 ≤0.5 ≤1 ≥64 ≥64 ≥128 ≥32 8 ≥128 ≥512 ≥32
T-188 ≥32 ≥32 ≥128 ≥256 128 ≥64 16 16 8 ≤0.5 ≤1 0.0035 0.007 0.12 ≥32 2 4 ≥512 ≤2
223Ba Y/MG/2012 410/A ≥32 ≥32 ≥128 ≥256 ≥128 ≥64 32 16 16 ≤0.5 ≤1 ≥64 ≥64 ≥128 ≤4 8 ≥128 ≥512 ≥32
T-223Ba ≥32 ≥32 ≥128 ≥256 ≥128 ≥64 32 16 ≤4 ≤0.5 ≤1 0.0035 0.0035 0.12 ≤4 8 ≥128 ≥512 ≤2
468 Z/PR/2012 1284/B1 ≥32 ≥32 ≥128 ≥256 ≥128 ≥64 16 16 16 ≤0.5 ≤1 ≥64 ≥64 ≥128 ≥32 16 ≥128 ≥512 ≥32
470 Z/PR/2012 1284/B1 ≥32 ≥32 ≥128 ≥256 ≥128 ≥64 16 ≥32 8 ≤0.5 ≤1 ≥64 ≥64 ≥128 ≥32 8 ≥128 ≥512 ≥32
TOP10 ≤8 ≤8 ≤0.2 ≤1 0.5 1 0.5 ≤1 ≤4 ≤0.5 ≤1 0.0035 0.0035 0.06 ≤4 2 4 ≤12 ≤2
a

Representative IncF-positive plasmids from E. coli ST224 and ST410 were selected for replicon sequence typing, obtaining the FAB allele formulas F-::A9::B1 and C1::A9::B1, respectively.

b

MG, Minas Gerais State; PR, Paraná State.

c

MICs were determined by microdilution technique using Sensititre ESBL-confirmatory MIC plates (TREK Diagnostic Systems, Thermo Fisher) or agar dilution methods; resistance is indicated in bold by using CLSI criteria (3, 4). AMP, ampicillin; CEF, cephalothin; CTX, cefotaxime; CRO, ceftriaxone; EFT, ceftiofur; CPD, cefpodoxime; CAZ, ceftazidima; FEP, cefepime; FOX, cefoxitin; IPM, imipenem; MEM, meropenem; CIP, ciprofloxacin; ENO, enrofloxacin; NOR, norfloxacin; GEN, gentamicin; AMI, amikacin; TET, tetracycline; SUL, sulfonamide; SXT, sulfamethoxazole-trimethoprim.