Table 1.
Frequency of virulence genes (VGs) by functional categories among E. coli isolates from piglets and sows. The test of statistical significance for fixed effect from the mixed logistic models with VG as the response and the animal as the independent variable.
| Functional Category VG |
Number (%) of E. coli Isolates with VGs | p-Value | |
|---|---|---|---|
| Piglets | Sows | ||
| N = 110 | N = 164 | ||
| Adhesins | |||
| fimH | 107 (97.3) | 142 (86.6) | 0.0065 * |
| papAH | 13 (11.8) | 8 (4.9) | 0.0449 * |
| sfaS | 2 (1.8) | 0 | - |
| Iron acquisition | |||
| fyuA | 29 (26.4) | 23 (14.0) | 0.0931 |
| iutA | 56 (50.9) | 33 (20.1) | <0.0001 * |
| iroN | 43 (39.1) | 29 (17.7) | 0.0012 * |
| ireA | 7 (6.4) | 5 (3.0) | 0.2313 |
| Protectins | |||
| kpsMTII: | 12 (10.9) | 10 (6.1) | 0.2867 |
| -K1 | 4 (3.6) | 9 (5.5) | 0.5026 |
| -K2 | 8 (7.3) | 9 (5.5) | 0.7091 |
| -K5 | 7 (6.4) | 10 (6.1) | 0.9264 |
| kpsMTIII | 1 (0.9) | 2 (1.2) | 0.9971 |
| ompT | 36 (32.7) | 28 (17.1) | 0.0175 * |
| traT | 94 (85.5) | 90 (54.9) | <0.0001 * |
| iss | 35 (31.8) | 25 (15.2) | 0.0143 * |
| Toxins | |||
| cnf1 | 5 (4.5) | 0 | - |
| hlyA | 2 (1.8) | 0 | - |
| Biofilm formation | |||
| agn43: | 59 (53.6) | 87 (53.0) | 0.9275 |
| -a | 5 (4.5) | 3 (1.8) | 0.4890 |
| -b | 2 (1.8) | 2 (1.2) | 0.6874 |
* Statistically significant.