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Comparison of MIC50s and MIC90s for KPC-positive isolates of Klebsiella pneumoniae and Escherichia coli identified in surveillance rectal swab specimens
| Organism | Parameter | MIC (μg/ml) |
||
|---|---|---|---|---|
| Ertapenem | Imipenem | Meropenem | ||
| Klebsiella pneumoniae (n = 23) | MIC50 | 32 | 16 | 16 |
| MIC90 | 256 | 256 | 128 | |
| Range | 8->256 | 4->256 | 4->256 | |
| Escherichia coli (n = 15) | MIC50 | 4 | 4 | 2 |
| MIC90 | 8 | 4 | 4 | |
| Range | 1-16 | 1-4 | 0.25-4 | |
