Table 8.
Serotypes of atypical EPEC Cluster 1 strains
| Serotypea | No. strains | Originb | % |
|---|---|---|---|
| O2:[H40] | 3 | h (1), a(2) | 2.3 |
| O3:[H8] | 3 | h (3) | 2.3 |
| O15:[H2] | 2 | h (2) | 1.6 |
| O26:[H11]c | 20 | h (9), a (11) | 15.5 |
| O55:H7 | 17 | h (17) | 13.2 |
| O70:H11d | 5 | a (5) | 3.9 |
| O76:[H7]e | 5 | h (5) | 3.9 |
| O80:[H2]d | 3 | a (3) | 2.3 |
| O86:H11 | 2 | h (2) | 1.6 |
| O100:[H25] | 2 | h (1)d, a (1) | 1.6 |
| O103:H2d | 2 | a (2) | 1.6 |
| O103:H25d | 4 | a (3), f (1) | 3.1 |
| O111:[H11]d | 2 | h (2) | 1.6 |
| O117:[H40] | 3 | h (3) | 2.3 |
| O118:[H8] | 3 | h (3) | 2.3 |
| O119:[H8] | 2 | h (1), a (1)d | 1.6 |
| O119:[H25]d | 3 | h (2), a (1) | 2.3 |
| O127:[H40] | 7 | h (7) | 5.4 |
| O128:[H2] | 3 | h (3) | 2.3 |
| O145:[H28]d | 5 | h (4), a (1) | 3.9 |
| O156:H8 | 2 | h (1), a (1)d | 1.6 |
| O157:[H7]d | 3 | h (3) | 2.3 |
| O177:H11d | 2 | a (2) | 1.6 |
| Ont:[H2]d | 2 | h (2) | 1.6 |
| Ont:[H21] | 4 | h (4) | 3.1 |
| Orough:[H40] | 2 | h (2) | 1.6 |
| singlef | 18 | see footnote to table | 14.0 |
| total | 129 | 100.0 |
a) in bold: serotypes previously associated with Stx-production [3]
b) Origin and numbers (in brackets) of strains h = human, a = animal, f = food
c) Four O26:H11 strains from humans and seven from animals were positive for the EHEC-plasmid associated ehxA gene.
d) All strains were positive for ehxA.
e) One strain was positive for ehxA.
f) serotypes and strains represented each by one isolate only: O2:H8 (a), O3:H5 (f), O3:H40 (h), O15:H11 (a), O21:H25 (h), O22:[H7] (h), O45:H7 (a), O71:H40 (h), O76:H41 (a),O84:[H2] (a), O109:H25d (a), O117:H25d (h), O121:H- (h), O121:H19d (h), O127:H8 (h), O128:H8 (h), O153:H14 (a), and Orough:[H7] (h)