Table 2.
O-types, virulence factors genes of E. coli isolates from calves with neonatal diarrhea
| O-type | Number of isolates (%) |
Number of isolates expressing the target genes
|
||||||
|---|---|---|---|---|---|---|---|---|
| F5(K99) | F41 | STa | Ag43(1800bp) | Ag43(2200bp) | Ag43 (1800&2200bp) | Ag43(NO) | ||
| O101 | 51 (42.50%) | 6 (5.00%) | 6 (5.00%) | 6 (5.00%) | 20 (16.66%) | 11 (9.16%) | 9 (7.50%) | 11 (9.16%) |
| O8 | 18 (15.00%) | 0 | 0 | 0 | 4 (3.33%) | 4 (3.33%) | 4 (3.33%) | 6 (5.00%) |
| O9 | 10 (8.33%) | 0 | 0 | 0 | 5 (4.16%) | 0 | 4 (3.33%) | 1 (0.83%) |
| O115 | 6 (5.00%) | 0 | 0 | 0 | 3 (2.50%) | 0 | 2 (1.66%) | 1 (0.83%) |
| Non typable | 35 (29.16%) | 1 (0.83%) | 1 (0.83%) | 1 (0.83%) | 21 (17.50%) | 7 (5.83%) | 7 (5.83%) | 0 |
| Total | 120 (100%) | 7 (5.83%) | 7 (5.83%) | 7 (5.83%) | 53 (44.16%) | 22 (18.33%) | 26 (21.66%) | 19 (15.83%) |