Table 1.
Characteristics of E. coli strains
| E. coli strain | Serotypea | Phylogenetic group | Resistance genes | Inc groupb | MIC (mg/liter)c |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AMP | AMC | TIO | FOX | NAL | CIP | TET | SXT | CHL | STR | KAN | GEN | RIF | |||||
| 177pMG252 | Neg | A | blaFOX, qnrA, tetA | A/C, F | >32 | >32, 16 | >8 | >32 | 32 | 1 | >32 | >4, 76 | >32 | >64 | 64 | 16 | >128 |
| 43pMG298 | Neg | D | blaCTX-M, qnrB, tetA | NT | >32 | 32, 16 | >8 | 32 | 8 | 2 | >32 | >4, 76 | >32 | >64 | >64 | >16 | >128 |
| O78K80 | O78:K80 | A | I1, FIB | 4 | 4, 8 | 0.5 | 8 | 4 | 0.03 | >4 | ≤0.12, 2.38 | 8 | ≤32 | 16 | 1 | ≤16 | |
a
Neg, negative with anti-O78:K80 antisera.
b
NT, not typeable.
c
AMP, ampicillin; AMC, amoxicillin-clavulanic acid; TIO, ceftiofur; FOX, cefoxitin; NAL, nalidixic acid; CIP, ciprofloxacin; TET, tetracycline; SXT, trimethoprim-sulfamethoxazole; CHL, chloramphenicol; STR, streptomycin; KAN, kanamycin; GEN, gentamicin; RIF, rifampin.