| All isolates (n = 550) | ESBL-positive (phenotype) isolates (n = 249) | ||||||
---|---|---|---|---|---|---|---|---|
Antibiotic | MIC50 (mg/L) | MIC90 (mg/L) | Susceptible % | Resistant % | MIC50 (mg/L) | MIC90 (mg/L) | Susceptible % | Resistant % |
Ampicillin | 256 | >256 | 13.6 | 85.1 | >256 | >256 | 0 | 100 |
Piperacillin | 64 | >256 | 31.8 | 49.5 | 256 | >256 | 0 | 91 |
Ampicillin-Sulbactam | 16 | 64 | 35 | 39.1 | 32 | 64 | 14.7 | 61.5 |
Piperacillin-tazobactam | 8 | 16 | 91 | 2.1 | 8 | 32 | 86.5 | 4.5 |
Cefazolin | 32 | 256 | 46.7 | 51.1 | 256 | 256 | 0.4 | 99.6 |
Cefuroxime | 8 | 256 | 50.1 | 47.8 | 256 | 256 | 0 | 98.5 |
Ceftazidime | 0.5 | 32 | 80.4 | 18.3 | 4 | 64 | 55.6 | 40.6 |
Ceftriaxone | 0.25 | 128 | 55.4 | 44.2 | 64 | 128 | 0.7 | 98.5 |
Cefepime | 1 | 32 | 77.7 | 13.5 | 8 | 64 | 54.5 | 28.9 |
Cefoxitin | 4 | 32 | 76.9 | 15 | 8 | 128 | 61.8 | 24.7 |
Biapenem | 0.064 | 0.125 | 100 | 0 | 0.064 | 0.125 | 100 | 0 |
Imipenem | 0.125 | 0.25 | 100 | 0 | 0.125 | 0.25 | 100 | 0 |
Meropenem | 0.064 | 0.125 | 100 | 0 | 0.064 | 0.125 | 100 | 0 |
Amikacin | 2 | 8 | 93.6 | 6.1 | 2 | 64 | 89.1 | 10.2 |
Gentamicin | 16 | 128 | 47.2 | 51.5 | 64 | 256 | 33.5 | 66.2 |
Ciprofloxacin | 4 | 64 | 46.7 | 51 | 32 | 128 | 24.8 | 73.3 |
Levofloxacin | 4 | 32 | 49.1 | 46.7 | 16 | 64 | 26.2 | 68.9 |
Fosfomycin | 1 | 32 | 94.1 | 5.1 | 1 | 128 | 88.6 | 9.8 |