TABLE 2.
CLSI-approved broth microdilution quality control ranges for cefepime-tazobactam against QC reference strains
| QC strain | Cefepime-tazobactam (fixed MIC, 8 μg/ml) |
Figure no. | |
|---|---|---|---|
| CLSI-approved MIC range (μg/ml) | % of MIC values in range | ||
| S. aureus ATCC 29213 | 1/8–4/8 | 100.0 | S1 |
| E. coli ATCC 25922 | 0.03/8–0.12/8 | 100.0 | S2 |
| E. coli NCTC 13353a | 0.06/8–0.25/8 | 95.8 | S3 |
| K. pneumoniae ATCC 700603 | 0.12/8–0.5/8 | 99.2 | S4 |
| P. aeruginosa ATCC 27853 | 0.5/8–4/8 | 100.0 | S5 |
| S. pneumoniae ATCC 49619 | 0.03/8–0.12/8 | 95.8 | S6 |
| H. influenzae ATCC 49247 | 0.5/8–2/8 | 100.0 | S7 |
a
This CTX-M-15-producing strain was needed for proper evaluation of tazobactam enzyme inhibition.