Table 6.
Differences in virulence factors between MRSA and MSSA among disease groups
| Virulence factor | Deep-seated infection | Cutaneous infection | Abscess | Mastitis | SSTI-related bacteremia | Catheter-related exit-site infection | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MRSA (n = 34) | MSSA (n = 18) | MRSA (n = 54) | MSSA (n = 51) | MRSA (n = 62) | MSSA (n = 49) | MRSA (n = 11) | MSSA (n = 5) | MRSA (n = 23) | MSSA (n = 12) | MRSA (n = 17) | MSSA (n = 8) | |
| PVL | 7 (20.6 %) | 1 (5.6 %) | 27 (50.0 %)* | 4 (7.8 %) | 49 (79.0 %) | 25 (51.0 %) | 5 (45.5 %) | 2 (40.0 %) | 3 (13.0 %) | 0 (0) | 1 (5.9 %) | 0 (0) |
| Hlg | 34 (100 %) | 17 (94.4 %) | 54 (100 %) | 47 (92.2 %) | 62 (100 %) | 46 (93.9 %) | 11 (100 %) | 4 (80.0 %) | 23 (100 %) | 12 (100 %) | 17 (100 %) | 7 (87.5 %) |
| TSST-1 | 4 (11.8 %) | 0 (0) | 2 (3.7 %) | 2 (3.9 %) | 2 (3.2 %) | 5 (10.2 %) | 0 (0) | 0 (0) | 1 (4.3 %) | 1 (8.3 %) | 0 (0) | 1 (12.5 %) |
| ETA | 7 (20.6 %) | 4 (22.2 %) | 15 (27.8 %) | 12 (23.5 %) | 18 (29.6 %) | 2 (4.1 %) | 3 (27.3 %) | 1 (20.0 %) | 5 (21.7 %) | 3 (25.0 %) | 5 (29.4 %) | 3 (37.5 %) |
| ETB | 0 (0) | 0 (0) | 1 (1.9 %) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
*Indicates a significant difference between MRSA and MSSA groups; P < 0.05