TABLE 1

Antimicrobial susceptibility testing of each isolate and transconjugant

Antibiotic agentMICs (μg/ml) for:
A. xylosoxidans KUN4507K. pneumoniae KUN4843K. pneumoniae KUN5033Transconjuganta
Piperacillin≤4>64>64>64
Piperacillin-tazobactamb4/44/48/48/4
Cefazolin>8>8>8>8
Cefotaxime>16≤1>16>16
Ceftazidime>16≤1>16>16
Cefepime>16≤1>16>16
Imipenem>8≤0.25>88
Meropenem>8≤0.2542
Aztreonam>16≤1≤1≤1
Gentamicin>8≤1≤1≤1
Tobramycin>8≤1≤1≤1
Amikacin>32≤1≤1≤1
Ciprofloxacin>4>4>4>4
Levofloxacin>4>4>4>4
Minocycline>16>16>16>16
Colistin4≤2≤2≤2
  • a Transconjugant derived from K. pneumoniae KUN4843 that acquired blaIPM-19.

  • b The MIC of piperacillin-tazobactam is indicated by the concentration of piperacillin-tazobactam.