TABLE 1.

Susceptibilities to antibiotics of Salmonella serotype Cubana 4707, an E. coli transconjugant containing wild-type plasmid pST4707, and an E. coli DH5α transconjugant containing plasmid pSTH-1

AntibioticMIC (μg/ml)
Serotype Cubana 4707E. coli(pST4707)E. coli DH5α(pSTH-1)E. coli DH5α
Ampicillin>256>256>2562
Amoxicillin>256>256>2564
Amoxicillin-CLAa643282
Ticarcillin>128>128>1280.5
Ticarcillin-CLAb>128>128>1280.5
Piperacillin>128>128>1281
Piperacillin-TAZc128>128321
Cefamandole>64>64>641
Cefoxitin81682
Ceftazidime64328≤0.5
Ceftazidime-CLAc422≤0.5
Cefotaxime32168≤0.5
Ceftriaxone646416≤0.5
Cefepime884≤0.5
Aztreonam646432≤0.5
Imipenem16168≤0.5
Imipenem-CLAc421≤0.5
Meropenem882≤0.5
  • a CLA, clavulanic acid. Penicillin/inhibitor ratio, 2:1.

  • b The inhibitor concentration was fixed at 2 μg/ml.

  • c TAZ, tazobactam. The inhibitor concentration was fixed at 4 μg/ml.