TABLE 6.
Comparison of doubling times and vancomycin MICs among VRSA strains and their derivatives
| Strain | Parental strain
|
Passage-derived strains
|
Vancomycin-resistant mutant strain
|
|||
|---|---|---|---|---|---|---|
| Doubling time (min) | MIC (mg/liter) | Doubling time (min) | MIC (mg/liter) | Doubling time (min) | MIC (mg/liter) | |
| Mu50 | 27.08 | 9 | 23.71 | 2 | 27.29 | 9 |
| MI | 36.92 | 10 | 25.61 | 2 | 34.35 | 7 |
| NJ | 22.71 | 7 | 18.45 | 3 | 30.19 | 5 |
| PC | 38.94 | 8 | 26.56 | 2 | 29.89 | 7 |
| IL | 21.28 | 7 | 14.09 | 2 | 30.51 | 6 |
| AMC11094 | 28.55 | 8 | 25.84 | 2 | 27.36 | 6 |
| 99/3759-V | 24.75 | 6 | 23.63 | 2 | 25.22 | 6 |
| 99/3700-W | 28.23 | 6 | 21.01 | 2 | 25.65 | 5 |
| 98141 | 26.81 | 5 | 26.56 | 3 | 26.93 | 6 |
| LIM2 | 24.45 | 5 | 17.93 | 2 | 28.64 | 6 |
| 28160 | 24.33 | 5 | 24.06 | 2 | 25.13 | 5 |
| BR1 | 19.53 | 9 | 18.75 | 2 | 23.05 | 5 |
| BR2 | 21.28 | 9 | 18.09 | 2 | ||
| BR3 | 24.61 | 9 | 17.87 | 3 | 25.11 | 7 |
| BR4 | 22.53 | 9 | 21.92 | 3 | 30.41 | 8 |
| BR5-1 | 26.76 | 9 | 24.64 | 3 | 29.78 | 8 |