TABLE 1.
Antibiotic resistance of E. faecium and E. faecalis isolates
| Antimicrobial agenta |
E. faecium (n = 249)
|
E. faecalis (n = 330)
|
||
|---|---|---|---|---|
| MIC90 (mg/liter) | Resistance (%) | MIC90 (mg/liter) | Resistance (%) | |
| Vancomycin | >64 | 63 (25.3) | 2 | 6 (1.8) |
| Teicoplanin | 64 | 53 (21.3) | 0.5 | 5 (1.5) |
| Ampicillin | >64 | 233 (93.6) | 8 | 16 (4.8) |
| Tetracycline | 4 | 21 (8.4) | >64 | 262 (79.4) |
| Erythromycin | >32 | 227 (91.2) | >32 | 210 (63.6) |
| Ciprofloxacin | >64 | 235 (94.4) | 64 | 92 (27.8) |
| Chloramphenicol | 16 | 8 (3.2) | 32 | 88 (26.7) |
| Rifampin | >16 | 240 (96.4) | 16 | 122 (37.0) |
| Quinupristin-dalfopristin | 4 | 25 (10.0) | 16 | 269 (81.5) |
| Streptomycin-HLR | NAb | 162 (65.1) | NA | 106 (31.2) |
| Gentamicin-HLR | NA | 228 (91.6) | NA | 178 (53.9) |
a
HLR, high-level resistance.
b
NA, not available.