TABLE 1.
Bacterial strains and MIC values of selected agents
| Strain | Date of isolation (day.mo.yr) | Specimen and relevant characteristics | MIC (μg/ml)a
|
Beta-lactamase produced | |||
|---|---|---|---|---|---|---|---|
| AMP | IPM | CTX | VCM | ||||
| Enterococcus faecalis | |||||||
| SEF96 | 21.04.2000 | Clinical isolate from urine | 1 | 1 | >256 | 1 | − |
| ATCC 29212 | Type strain | 1 | 1 | 256 | 4 | − | |
| SVR 34 | 15.02.2000 | Clinical isolate with vanB from urine | 8 | 4 | >256 | 32 | − |
| SVR 138 | 27.05.2002 | Clinical isolate with vanA from stool | 8 | 8 | >256 | >512 | − |
| SVR 250 | 19.07.2002 | Clinical isolate with vanA from urine | 1 | 0.5 | 64 | >512 | − |
| SVR 251 | 19.07.2002 | Clinical isolate with vanA from urine | 1 | 0.5 | 64 | >512 | − |
| SVR 1110 | 02.09.2000 | Clinical isolate with vanA from urine | 16 | 32 | >256 | >512 | − |
| SVR 1119 | 01.12.1998 | Clinical isolate with vanA from urine | 16 | 32 | >256 | >512 | − |
| SVR 1119S | ΔvanA; spontaneous mutant derived from SVR 1119 | 16 | 32 | >256 | 1 | ||
| Escherichia coli | |||||||
| ATCC 35218 | Beta-lactamase-positive strain | + | |||||
a
Abbreviations: AMP, ampicillin; IPM, imipenem; CTX, cefotaxime; VCM, vancomycin.