Table 1.
Antimicrobial susceptibility profiles in four pairs of isogenic Klebsiella pneumoniae strains.
| Isolate | ST a | Minimum Inhibitory Concentration(mg/L) b | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| COL | PB | AMP | AZ | CTX | CAZ | CIP | GEN | IMI | P/T | SXT | ||
| B0608-134 | 730 | 1 | 2 | 64 | ≤0.06 | ≤0.06 | 1 | ≤0.06 | 1 | 0.125 | 16/4 | 0.06/1.18 |
| B0608-134R | 256 | >64 | 64 | ≤0.06 | ≤0.06 | 1 | ≤0.06 | 2 | 0.25 | 16/4 | 0.06/1.18 | |
| B0704-039 | 11 | 0.5 | 2 | >64 | >64 | >64 | >64 | >64 | >64 | 1 | >64/4 | 4/76 |
| B0704-039R1 | >8192 | >64 | >64 | >64 | >64 | >64 | >64 | >64 | 1 | >64/4 | 4/76 | |
| B0704-039R2 | >128 | >64 | >64 | >64 | >64 | >64 | >64 | >64 | 0.5 | >64/4 | 4/76 | |
| 08-B063 | 23 | 0.5 | 2 | 64 | ≤0.06 | ≤0.06 | 0.5 | ≤0.06 | 0.5 | 0.125 | 8/4 | 0.12/2.37 |
| 08-B063R | 512 | >64 | >64 | ≤0.06 | ≤0.06 | 0.5 | 0.125 | 0.5 | 0.125 | 16/4 | 0.5/9.5 | |
| B0701-068 | 152 | 0.5 | 2 | 64 | ≤0.06 | ≤0.06 | 1 | ≤0.06 | 1 | 0.25 | 16/4 | 0.06/1.18 |
| B0701-068R | 1024 | >64 | >64 | ≤0.06 | ≤0.06 | 1 | ≤0.06 | 1 | 0.25 | 16/4 | 0.125/2.37 | |
a ST, Sequence type in multi-locus sequence typing. b COL, colistin; PB, polymyxin B; AMP, ampicillin; AZ, aztreonam; CTX, cefotaxime; CAZ, ceftazidime; CIP, ciprofloxacin; GEN, gentamicin; IMI, imipenem; P/T, piperacillin/tazobactam; SXT, trimethoprim/sulfamethoxazole.