Table 2.
Virulence genes and biofilm production in 50 Staphylococcus epidermidis isolates from bloodstream infection and nasal colonization
| Biofilm-associated virulence genes |
Number (%) of isolates | Number (%) of biofilm producer isolates | ||||
|---|---|---|---|---|---|---|
| BSIa
(n = 31) |
Nasalb
(n = 19) |
p value | BSIa
(n = 8) |
Nasalb
(n = 8) |
p value | |
| aae | 31 (100) | 19 (100) | 1 | 8 (100) | 8 (100) | 1 |
| aap | 18 (58) | 16 (84) | 0.068 | 7 (88) | 8 (100) | 1 |
| atlE | 30 (97) | 19 (100) | 1 | 8 (100) | 8 (100) | 1 |
| bhp | 1 (3) | 1 (5) | 1 | 0 (0) | 0 (0) | 1 |
| embp | 28 (90) | 19 (100) | 0.279 | 8 (100) | 8 (100) | 1 |
| fbe | 23 (74) | 16 (84) | 0.498 | 7 (88) | 6 (75) | 1 |
| gehD | 23 (74) | 11 (58) | 0.349 | 6 (75) | 6 (75) | 1 |
| sdrF | 20 (65) | 2 (11) | 0.001c | 6 (75) | 0 (0) | 0.007c |
| sesI | 12 (39) | 0 (0) | 0.02c | 3 (38) | 0 (0) | 0.2 |
| icaADB | 14 (45) | 10 (53) | 0.772 | 6 (75) | 7 (88) | 0.6 |
| arcA | 6 (19) | 1 (5) | 0.229 | 4 (50) | 1(13) | 0.282 |
| opp3AB | 3 (10) | 1 (5) | 1 | 1 (13) | 1 (13) | 1 |
a BSI: Bloodstream infection isolates
b Nasal: Nasal isolates
c: results with statistical significance