Antibiotic TEM/SHV CTX-M TEM/SHV+CTX-M   MIC50 MIC90 MIC50 MIC90 MIC50 MIC90 Penicillin ≥32 ≥32 ≥32 ≥32 ≥32 ≥32 Ceftazidime 2 ≥32 2 ≥32 2 16 Ceftriaxone 2 ≥32 ≥32 ≥32 ≥32 ≥32 Cefepime 1 ≥32 8 ≥32 8 ≥32 Imipenem ≤0.5 ≤0.5 ≤0.5 ≤0.5 ≤0.5 ≤0.5 Meropenem ≤0.5 ≤0.5 ≤0.5 ≤0.5 ≤0.5 ≤0.5 Aztreonam 2 ≥32 4 ≥32 8 ≥32 Gentamicin 2 16 1 16 4 16 Minocycline 2 8 2 16 2 16 Ciprofloxacin 8 8 8 8 8 8 Levofloxacin 8 8 8 8 8 8

Table 3: Antimicrobial susceptibilities of ESBL-producing E. coli.