Antimicrobial Minimal inhibitory concentration (µg/mL)
Ampicillin ≤0.5
Piperacillin 8
Cefaclor ≤8
Cefotiam 16
Cefotaxime 16
Ceftazidime ≤1
Ceftriaxone 4
Flomoxef ≤1
Azithromycin 16
Imipenem and cilastatin 2
Ampicillin and sulbactam ≤0.5
Piperacillin and tazobactam 4
Gentamycin >16
Clindamycin >4
Minocycline ≤2
Levofloxacin ≤0.5