Table 6.
The distribution of virulence genes of 151 strains of S. aureus (%).
| Virulence genes | Total strains (n = 151) | MRSA (n = 97) | MSSA (n = 54) | χ 2 | P |
|---|---|---|---|---|---|
| sea | 55 (36.4) | 48 (49.5) | 7 (13.0) | 19.981 | 0.001 |
| sec | 19 (12.6) | 14 (14.4) | 5 (9.3) | 0.844 | 0.358 |
| seh | 11 (7.3) | 10 (10.3) | 1 (1.9) | 2.528 | 0.112 |
| sek | 38 (25.2) | 36 (37.1) | 2 (3.7) | 20.560 | 0.001 |
| seb | 42 (27.8) | 37 (38.1) | 5 (9.3) | 14.415 | 0.001 |
| seq | 96 (63.6) | 84 (86.6) | 12 (22.2) | 62.080 | 0.001 |
| sep | 7 (4.6) | 1 (1.0) | 6 (11.1) | — | 0.009 |
| Tsst-1 | 4 (2.7) | 3 (3.1) | 1 (1.9) | — | 1.000 |
| clfA | 148 (98.0) | 95 (97.9) | 53 (98.2) | — | 1.000 |
| clfB | 149 (98.7) | 95 (97.9) | 54 (100.0) | — | 0.537 |
| fnbA | 144 (95.4) | 94 (96.9) | 50 (92.6) | — | 0.249 |
| hla | 148 (98.0) | 95 (97.9) | 53 (98.2) | — | 1.000 |
| hld | 143 (94.7) | 90 (92.8) | 53 (98.2) | 1.064 | 0.302 |
| hlg | 146 (96.7) | 94 (96.9) | 52 (96.3) | — | 1.000 |
| lukE | 96 (63.6) | 59 (60.8) | 37 (68.5) | 0.887 | 0.346 |
| bbp | 137 (90.7) | 87 (89.7) | 50 (92.6) | 0.347 | 0.556 |
| cna | 102 (67.6) | 72 (74.2) | 30 (55.6) | 5.517 | 0.019 |
| eap | 67 (44.4) | 56 (57.7) | 11 (20.4) | 19.617 | 0.001 |
| ebpS | 137 (90.7) | 94 (96.9) | 43 (79.6) | 12.310 | 0.001 |
| sdrC | 56 (37.1) | 47 (48.5) | 9 (16.7) | 15.022 | 0.001 |
| sdrD | 87 (57.6) | 54 (55.7) | 33 (61.1) | 0.421 | 0.517 |
| sdrE | 125 (82.8) | 87 (89.7) | 38 (70.4) | 9.084 | 0.003 |
| Pvl | 23 (15.2) | 13 (13.4) | 10 (18.5) | 0.703 | 0.402 |
Note. “—” indicates the result of using Fisher's exact probability test.