Table 2.
Laboratory detection of 196 Enterobacteriaceae isolates.
| Enterobacteriaceae (n) | PCR (n) | MIC of imipenem (mg/L) |
MIC of meropenem (mg/L) |
MIC of ertapenem (mg/L) |
sCIM |
mCIM |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ≥4 | 2 | ≤1 | ≥4 | 2 | ≤1 | ≥2 | 1 | ≤0.5 | + | − | + | − | ||
| K. pneumoniae (105) | KPC-2 (54) | 54 | 0 | 0 | 54 | 0 | 0 | 54 | 0 | 0 | 54 | 0 | 54 | 0 |
| IMP-4 (19) | 19 | 0 | 0 | 19 | 0 | 0 | 19 | 0 | 0 | 19 | 0 | 19 | 0 | |
| IMP-2 (1) | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | |
| VIM-1 (6) | 6 | 0 | 0 | 6 | 0 | 0 | 6 | 0 | 0 | 6 | 0 | 6 | 0 | |
| NDM-1 (3) | 3 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 3 | 0 | |
| OXA-48(1) | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | |
| None (21) | 1 | 0 | 20 | 1 | 0 | 20 | 4 | 0 | 17 | 1 | 20 | 1 | 20 | |
| E. coli (73) | KPC-2 (31) | 31 | 0 | 0 | 31 | 0 | 0 | 31 | 0 | 0 | 31 | 0 | 31 | 0 |
| IMP-4 (9) | 9 | 0 | 0 | 9 | 0 | 0 | 9 | 0 | 0 | 9 | 0 | 9 | 0 | |
| IMP-2 (2) | 2 | 0 | 0 | 2 | 0 | 0 | 2 | 0 | 0 | 2 | 0 | 2 | 0 | |
| NDM-1 (5) | 5 | 0 | 0 | 5 | 0 | 0 | 5 | 0 | 0 | 5 | 0 | 5 | 0 | |
| OXA-48(1) | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | |
| None (25) | 0 | 0 | 25 | 0 | 0 | 25 | 2 | 0 | 23 | 0 | 25 | 0 | 25 | |
| E. cloacae (18) | KPC-2 (1) | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 |
| IMP-4 (4) | 4 | 0 | 0 | 4 | 0 | 0 | 4 | 0 | 0 | 4 | 0 | 4 | 0 | |
| VIM-1 (3) | 3 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 3 | 0 | |
| NDM-1 (7) | 7 | 0 | 0 | 7 | 0 | 0 | 7 | 0 | 0 | 7 | 0 | 7 | 0 | |
| None (3) | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 3 | 0 | 3 | |
+, positive; −, negative; sCIM, simplified carbapenem inactivation method; mCIM, modified carbapenem inactivation method.