Table 1.
Antimicrobial susceptibility patterns of the ESBL E. coli ATCC 51446 strain used in the CsAg02 and CsAr02 antimicrobial assays. The susceptible concentration of the ESBL E. coli strain and the qualitative susceptibility interpretation for each antibiotic are shown.
| Antimicrobial Agent | Concentration (mg/L) | Qualitative Susceptibility* |
|---|---|---|
| Amikacin | 16 | Susceptible, ≤16 |
| Amoxicillin/K Clavulanate | ≤8/4 | Susceptible, ≤8/4 |
| Ampicillin/Sulbactam | >16/8 | Resistant, >16/8 |
| Ampicillin | >16 | Resistant, >16 |
| Aztreonam | 8 | Susceptible, ≤8 |
| Cefazolin | >16 | Resistant, >16 |
| Cefepime | >16 | Resistant, >16 |
| Cefoxitin | ≤8 | Susceptible, ≤8 |
| Cefotaxime | >32 | Resistant, >32 |
| Cefotetan | ≤4 | Susceptible, ≤16 |
| Ceftazidime | 8 | Susceptible, ≤8 |
| Ceftizoxime | >32 | Resistant, >32 |
| Ceftriaxone | >32 | Resistant, >32 |
| Cefuroxime | >16 | Resistant, >16 |
| Cefalotin | >16 | Resistant, >16 |
| Chloramphenicol | ≤8 | Susceptible, ≤8 |
| Gatifloxacin | ≤2 | Susceptible, ≤2 |
| Gentamicin | 4 | Susceptible, ≤4 |
| Levofloxacin | ≤2 | Susceptible, ≤2 |
| Meropenem | ≤1 | Susceptible, ≤4 |
| Nitrofurantoin | ≤32 | Susceptible, ≤32 |
| Piperacillin | >64 | Resistant, >64 |
| Piperacillin/Tazobactam | ≤8 | Susceptible, ≤8 |
| Tetracycline | >8 | Resistant, >8 |
| Ticarcillin/K Clavulanate | 32 | Intermediate, 32−64 |
| Tobramycin | 8 | Intermediate, 8 |
| Trimethoprim/Sulfamethoxazole | ≤2/38 | Susceptible, ≤2/38 |
*
The endpoint of susceptibility interpretation is indicated for each antibiotic.