Table 1 Distribution of virulence associated genes among ESBL-EC from LRT and by ST131 affiliation
VAGsa | Total ESBL | ST131 | non-ST131 | Pearson Chi-Square value (df 1) | p-valueb |
|---|---|---|---|---|---|
N = 487 (100%) | N = 329 (100%) | N = 158 (100%) | |||
n (%) | n (%) | n (%) | |||
Adhesins | |||||
afa/dra | 142 (29.2%) | 129 (39.2%) | 13 (8.2%) | 49.6 | < 0.001 |
fimH | 450 (92.4%) | 312 (94.8%) | 138 (87.3%) | 8.5 | 0.003 |
iha | 336 (69%) | 311 (94.5%) | 25 (15.8%) | 309.1 | < 0.001 |
Autotransporters | |||||
fluA | 379 (77.8%) | 291 (88.4%) | 88 (55.7%) | 66.4 | < 0.001 |
sat | 191 (39.2%) | 165 (50.2%) | 26 (16.5%) | 50.8 | < 0.001 |
vat | 12 (2.5%) | 0 (0%) | 12 (7.6%) | 25.6 | < 0.001 |
Protectins | |||||
iss | 38 (7.8%) | 3 (0.9%) | 35 (22.2%) | 66.9 | < 0.001 |
kpsMTII | 327 (67.1%) | 261 (79.3%) | 66 (41.8%) | 68.3 | < 0.001 |
ompTAPEC | 167 (34.3%) | 104 (31.6%) | 63 (39.9%) | 3.2 | < 0.001 |
traT | 403 (82.8%) | 288 (87.5%) | 115 (72.8%) | 16.3 | < 0.001 |
Iron acquisition systems | |||||
fyuA | 423 (86.9%) | 318 (96.7%) | 105 (66.5%) | 85.3 | < 0.001 |
iutA | 414 (85%) | 320 (97.3%) | 94 (59.5%) | 119.5 | < 0.001 |
Toxins | |||||
ehxA | 0 (0%) | 0 (0%) | 0 (0%) | ||
hlyA | 32 (6.6%) | 23 (7%) | 9 (5.7%) | 0.3 | 0.590 |
hlyF | 2 (0.4%) | 0 (0%) | 2 (1.3%) | 3.1 | 0.078 |
usp | 347 (71.3%) | 314 (95.4%) | 33 (20.9%) | 289.7 | < 0.001 |
O25b serotype | 380 (78%) | 313 (95.1%) | 67 (42.4%) | 173.1 | < 0.001 |