TABLE 1.
Correlation between the oxacillin MIC and the presence of the mecA gene
| Category and species | Presence (+) or absence (−) of mecA | Total no. of strains tested | No. of strains for which the MIC was:
|
||||||
|---|---|---|---|---|---|---|---|---|---|
| 0.125 | 0.25 | 0.5 | 1 | 2 | 4.0 | >4.0 | |||
| I | |||||||||
| S. epidermidis | − | 101 | 101 | 0 | 0 | 0 | 0 | 0 | 0 |
| + | 164 | 0 | 0 | 5 | 6 | 6 | 19 | 128 | |
| S. hominis | − | 41 | 41 | 0 | 0 | 0 | 0 | 0 | 0 |
| + | 44 | 0 | 0 | 2 | 3 | 3 | 6 | 30 | |
| S. haemolyticus | − | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 0 |
| + | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 25 | |
| II | |||||||||
| S. cohnii | − | 10 | 0 | 0 | 1 | 0 | 9 | 0 | 0 |
| + | 4 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | |
| S. saprophyticus | − | 20 | 0 | 0 | 4 | 15 | 1 | 0 | 0 |
| + | 2 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | |
| S. warneri | − | 16 | 4 | 0 | 12 | 0 | 0 | 0 | 0 |
| + | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | |
| III | |||||||||
| S. lugdunensis | − | 18 | 0 | 0 | 7 | 10 | 1 | 0 | 0 |
| + | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| S. xylosus | − | 10 | 0 | 0 | 4 | 6 | 0 | 0 | 0 |
| + | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| IV | |||||||||
| S. capitis | − | 15 | 14 | 0 | 1 | 0 | 0 | 0 | 0 |
| + | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| S. schleiferi | − | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 0 |
| + | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| S. simulans | − | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
| + | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |