Table 1 Distribution of leukotoxin and PTSAg genes among S. aureus isolates from blood and wounds
Gene | No. of isolates positive for the gene [% of total (n = 177)] | No. of isolates positive for the gene in two origins (%) | P value | No. of isolates positive for the gene in MRSA and MSSA (%) | P value | ||
|---|---|---|---|---|---|---|---|
Blood (n = 88) | Wounds (n = 89) | MRSA (n = 47) | MSSA (n = 130) | ||||
Leukotoxin gene | |||||||
 lukED | 144 (81.4) | 73 (83.0) | 71 (80.0) | 0.587 | 32 (68.1) | 112 (86.2) | 0.006 |
 lukM | 0 | 0 | 0 | NA | 0 | 0 | NA |
 hlgCB | 168 (94.9) | 81 (92.0) | 87 (97.8) | 0.099 | 44 (93.6) | 124 (95.4) | 0.701 |
 lukAB | 120 (67.8) | 56 (63.6) | 64 (71.9) | 0.239 | 33 (70.2) | 87 (66.9) | 0.679 |
 lukPV (pvl) | 14 (7.9) | 7 (7.9) | 7 (8.0) | 0.982 | 4 (8.5) | 10 (7.7) | 1.000 |
PTSAg gene | |||||||
 tst | 13 (7.3) | 8 (9.1) | 5(5.6) | 0.376 | 5 (10.6) | 8 (6.2) | 0.335 |
 sea | 33 (18.6) | 14 (15.9) | 19 (21.3) | 0.353 | 13 (27.7) | 20 (15.4) | 0.220 |
 seb | 50 (28.2) | 30 (34.1) | 20 (22.5) | 0.086 | 16 (34.0) | 34 (26.2) | 0.303 |
 sec | 25 (14.1) | 9 (10.2) | 16 (18.0) | 0.139 | 10 (21.3) | 15 (11.5) | 0.100 |
 sed | 13 (7.3) | 5 (5.7) | 8 (9.0) | 0.399 | 4 (8.5) | 9(6.9) | 0.748 |
 see | 0 | 0 | 0 | NA | 0 | 0 | NA |
 seg | 65 (36.7) | 33 (37.5) | 32 (36.0) | 0.831 | 18 (38.3) | 47 (36.2) | 0.794 |
 seh | 19 (10.7) | 10 (11.4) | 9 (10.1) | 0.788 | 4 (8.5) | 15 (11.5) | 0.566 |
 sei | 52 (29.4) | 31 (35.2) | 21 (23.6) | 0.089 | 16 (34.0) | 36 (27.7) | 0.413 |
 sej | 20 (11.3) | 8 (9.1) | 12 (13.5) | 0.356 | 4 (8.5) | 16 (12.3) | 0.481 |
 sem | 51 (28.8) | 31 (35.2) | 20 (22.5) | 0.061 | 18 (38.3) | 33 (25.4) | 0.094 |
 sen | 40 (22.6) | 28 (31.8) | 12 (13.5) | 0.001 | 15 (31.9) | 25 (19.2) | 0.075 |
 seo | 38 (21.5) | 25 (28.4) | 13 (14.6) | 0.025 | 13 (27.7) | 25 (19.2) | 0.576 |