Table 1.
Specimens and prevalence of virulence factors in different sequence types (STs) of S. argenteus isolates (n = 82).
| Specimens, Virulence Factor (-Associated) Genes | Number of Isolates (%) | |||
|---|---|---|---|---|
| ST1223 (n = 25) | ST2198 (n = 20) | ST2250 (n = 37) | Total (n = 82) | |
| specimens | ||||
| wound | 1 (4) | 0 (0) | 0 (0) | 1 (1.2) |
| pus | 0 (0) | 1 (5) | 1 (2.7) | 2 (2.4) |
| ear pus | 3 (12) | 2 (10) | 2 (5.4) | 7 (8.5) |
| ear discharge | 2 (8) | 3 (15) | 5 (13.5) | 10 (12.2) |
| nasal discharge | 0 (0) | 4 (20) | 7 (18.9) | 11 (13.4) |
| pharynx | 4 (16) | 0 (0) | 2 (5.4) | 6 (7.3) |
| sputum | 6 (24) | 5 (25) | 5 (13.5) | 16 (19.5) |
| stool | 3 (12) | 2 (10) | 7 (18.9) | 12 (14.6) |
| urine | 3 (12) | 0 (0) | 4 (10.8) | 7 (8.5) |
| punctured fluid | 1 (4) | 1 (5) | 0 (0) | 2 (2.4) |
| vaginal discharge | 1 (4) | 2 (10) | 1 (2.7) | 4 (4.9) |
| intestinal juice | 1 (4) | 0 (0) | 0 (0) | 1 (1.2) |
| blood | 0 (0) | 0 (0) | 1 (2.7) | 1 (1.2) |
| skin | 0 (0) | 0 (0) | 1 (2.7) | 1 (1.2) |
| tongue coating | 0 (0) | 0 (0) | 1 (2.7) | 1 (1.2) |
| Leukocidin, haemolysins, enterotoxins, TSST-1 1 | ||||
| hla | 25 (100) | 20 (100) | 37 (100) | 82 (100) |
| hlb | 25 (100) | 20 (100) | 37 (100) | 82 (100) |
| hld | 25 (100) | 20 (100) | 37 (100) | 82 (100) |
| hlg | 20 (80) | 19 (95) | 32 (86.5) | 71 (86.6) |
| lukS-PV-lukF-PV | 0 (0) | 0 (0) | 1 (2.7) | 1 (1.2) |
| sea | 0 (0) | 1 (5) | 0 (0) | 1 (1.2) |
| seb | 15 (60) * | 0 (0) | 0 (0) | 15 (18.3) |
| sec | 0 (0) | 0 (0) | 4 (10.8) | 4 (4.9) |
| egc-2 (seg-sei-sem-sen-seo-seu) | 25 (100) * | 0 (0) | 0 (0) | 25 (30.5) |
| selx | 6 (24) | 12 (60) * | 2 (5.4) | 20 (24.4) |
| sey | 0 (0) | 0 (0) | 37 (100) * | 37 (45.1) |
| selw | 21 (84) * | 0 (0) | 0 (0) | 21 (25.6) |
| selz | 8 (32) | 0 (0) | 11 (29.7) | 19 (23.2) |
| sel26-sel27 | 0 (0) | 0 (0) | 25 (67.6) * | 25 (30.5) |
| tst-1 | 0 (0) | 0 (0) | 4 (10.8) | 4 (4.9) |
| Adhesins, modulators of host defense 1 | ||||
| ebpS | 25 (100) | 20 (100) | 37 (100) | 82 (100) |
| fnbA | 25 (100) | 20 (100) | 37 (100) | 82 (100) |
| fnbB | 25 (100) | 20 (100) | 37 (100) | 82 (100) |
| clfB | 20 (80) | 16 (80) | 32 (86.5) | 68 (82.9) |
| eno | 21 (84) | 18 (90) | 35 (94.6) | 74 (90.2) |
| cna | 19 (76) | 12 (60) | 26 (70.3) | 57 (69.5) |
| icaA | 19 (76) | 17 (85) | 27 (73) | 63 (76.8) |
| sdrC | 18 (72) * | 3 (15) | 21 (56.8) | 42 (51.2) |
| sdrD | 14 (56) | 9 (45) | 25 (67.6) | 48 (58.5) |
| sdrE | 3 (12) | 9 (45) | 20 (54.1) * | 32 (39) |
| sak, chp, scn | 0 (0) | 7 (35) * | 0 (0) | 7 (8.5) |
| sak, scn (chp-negative) | 0 (0) | 0 (0) | 25 (67.6) * | 25 (30.5) |
| scn (sak-, chp-negative) | 7 (28)* | 0 (0) | 0 (0) | 7 (8.5) |
1 The following genes were not detected in any isolate: lukM, lukDE, sed, see, seh, sep, seq, ser, ses, set, eta, etb, etd, fib, clfA, icaD, bap, edn-A, edn-B, vWbp. * p < 0.01.