| Virulence genes | Detection of virulence genes (%) (No. of positive strains/ No. of total strains) | ||||
| High pathogenic strains (n = 193) | Intermediate pathogenic strains (n = 98) | Low pathogenic strains (n = 29) | Total | Non-pathogenic strains (n = 50) | |
| irp2 | 87.6 (169/193) | 44.9 (44/98) | 0.0 | 66.6 (213/320) | 0.0 |
| fyuA | 90.2 (174/193) | 70.4 (69/98) | 20.7 (6/29) | 77.8 (249/320) | 0.0 |
| iucA | 68.4 (132/193) | 38.8 (38/98) | 34.5 (10/29) | 53.1 (170/320) | 30 (15/50) |
| iucD | 80.8 (156/193) | 70.4 (70/98) | 34.5 (10/29) | 73.8 (236/320) | 20 (10/50) |
| iutA | 85.5 (165/193) | 54.1 (53/98) | 24.1 (7/29) | 70.3 (225/320) | 20 (10/50) |
| FimA | 77.2 (149/193) | 46.9 (46/98) | 41.4 (12/29) | 64.7 (207/320) | 60 (30/50) |
| FimC | 92.7 (179/193) | 86.7 (85/98) | 75.9 (22/29) | 90.9 (291/320) | 70 (35/50) |
| papC | 31.1 (60/193) | 4.1 (4/98) | 0.0 | 20.0 (64/320) | 0.0 |
| iss | 72.5 (140/193) | 34.7 (34/98) | 13.8 (4/29) | 55.6 (178/320) | 0.0 |
| hlyA | 1.0 (2/193) | 0.0 | 0.0 | 0.6 (2/320) | 0.0 |
| tsh | 83.4 (161/193) | 29.6 (29/98) | 27.6 (8/29) | 61.8 (198/320) | 16 (8/50) |
| colV | 85.5 (165/193) | 50.0 (49/98) | 0.0 | 66.9 (214/320) | 0.0 |
| colBM | 100.0 (193/193) | 100.0 (98/98) | 100.0 (29/29) | 100.0 (320/320) | 100 (50/50) |