Table 4.
Distribution of the genetic markers ureD, espV, espK, espN, Z2098, and espM1 and combinations thereof among EPEC serotype strains
| Genetic markera | No. of strains detected/total no. of strains (%) for: |
|||||
|---|---|---|---|---|---|---|
| O103:H2 | O121:H19 | O145:H28 | O157:H7 | O26:H11 | Other EPECb | |
| Z2098 | 7/11 (63.6) | 0/5 (0.0) | 8/8 (100) | 9/9 (100) | 31/71 (43.7) | 36/288 (12.5) |
| espK | 9/11 (81.8) | 3/5 (60.0) | 8/8 (100) | 7/9 (77.8) | 30/71 (42.3) | 56/288 (19.4) |
| espN | 6/11 (54.5) | 0/5 (0.0) | 8/8 (100) | 6/9 (66.7) | 13/71 (18.3) | 19/288 (6.6) |
| espV | 6/11 (54.5) | 5/5 (100) | 8/8 (100) | 9/9 (100) | 31/71 (43.7) | 118/288 (41.0) |
| ureD | 1/11 (9.1) | 5/5 (100) | 5/8 (62.5) | 6/9 (66.7) | 20/71 (28.2) | 34/288 (11.8) |
| espM1 | 0/11 (0.0) | 5/5 (100) | 8/8 (100) | 9/9 (100) | 64/71 (90.1) | 49/288 (17.0) |
| espK/espV | 10/11 (90.9) | 5/5 (100) | 8/8 (100) | 9/9 (100) | 43/71 (60.6) | 137/288 (47.6) |
| espK/ureD | 9/11 (81.8) | 5/5 (100) | 8/8 (100) | 9/9 (100) | 30/71 (42.3) | 70/288 (24.3) |
| espK/Z2098 | 10/11 (90.9) | 3/5 (60) | 8/8 (100) | 9/9 (100) | 33/71 (46.5) | 81/288 (28.1) |
| espN/Z2098 | 7/11 (63.6) | 0/5 (0) | 8/8 (100) | 9/9 (100) | 31/71 (43.7) | 49/288 (17.0) |
| espN/espM1 | 6/11 (54.5) | 5/5 (100) | 8/8 (100) | 9/9 (100) | 65/71 (91.5) | 57/288 (19.8) |
a
espK/espV, strains giving a positive result for espK and/or espV; espK/ureD, strains giving a positive result for espK and/or ureD; espK/Z2098, strains giving a positive result for Z2098 and/or espK; espN/Z2098, strains giving a positive result for espN and/or Z2098; espN/espM1, strains giving a positive result for espN and/or espM1.
b
Most of the EPEC strains tested in this study were described by Bugarel et al. (25).