TABLE 7.
Antimicrobial agents
| Antimicrobial agent | Range of test (μg/ml) | Breakpoint for resistance |
|
|---|---|---|---|
| CLSI | EUCAST | ||
| Fidaxomicin | 0.004–4 | NAa | NA |
| Rifaximin | 0.004–4 | NA | NA |
| Rifampin | 0.004–4 | NA | >0.004 |
| Vancomycin | 0.25–64 | ≥4b | >2 |
| Metronidazole | 0.06–16 | ≥32 | >2 |
| Moxifloxacin | 0.5–16 | ≥8 | >4 |
| Clindamycin | 0.5–16 | ≥8 | NA |
| Imipenem | 0.12–8 | ≥16 | NA |
| Tigecyclinec | 0.06–64 | ≥16 | >0.25 |
| Chloramphenicol | 0.5–16 | ≥32 | NA |
a
NA, resistance breakpoint not established when study was performed.
b
CLSI epidemiological cutoff value for vancomycin.
c
FDA resistance breakpoint used for tigecycline.