Table 2.
Prevalence of toxin genes among Staphylococcus aureus isolated from patients with skin and soft tissue infections in two Chinese hospitals
| Toxin genes | Positive rate (%) | χ2 | P | ||
|---|---|---|---|---|---|
| Total (n = 62) | MSSA (n = 46) | MRSA (n = 16) | |||
| lukS/F-PV | 0 | 0 | 0 | – | – |
| tst | 4.8 | 2.2 | 12.5 | 0.964 | 0.326 |
| eta | 3.2 | 4.3 | 0 | 0.001 | 0.979 |
| etb | 0 | 0 | 0 | – | – |
| sea | 8.1 | 4.3 | 18.8 | 1.663 | 0.197 |
| seb | 4.8 | 4.3 | 6.3 | <0.001 | 1.000 |
| sec | 19.4 | 13.0 | 37.5 | 0.873 | 0.350 |
| sed | 8.1 | 8.7 | 6.3 | <0.001 | 1.000 |
| see | 0 | 0 | 0 | – | – |
| seg | 12.9 | 10.9 | 18.8 | 0.142 | 0.706 |
| seh | 3.2 | 2.2 | 6.3 | – | 0.453 |
| sei | 25.8 | 23.9 | 31.3 | 0.061 | 0.806 |
| sej | 6.5 | 6.5 | 6.3 | <0.001 | 1.000 |
| sasX | 0 | 0 | 0 | – | – |
lukS/F-PV: Gene encoding Panton-Valentine leukocidin; tst: Gene encoding toxic shock syndrome toxin 1; eta and etb: Gene encoding exfoliative toxin A and B; sea-see and seg-sej: Gene encoding staphylococcal enterotoxins SEA-SEE and SEG-SEJ; sasX: Gene encoding mobile genetic element; Two-sided P value calculated by the Chi-square or Fisher’s exact test as appropriate. –: Not applicable; MSSA: Methicillin-susceptible Staphylococcus aureus; MRSA: Methicillin-resistant Staphylococcus aureus.