Table 3. Serogroup and variants of esp and tir genes in EPEC strains isolated from children with diarrhoea and controls.
No. | Alleles | Diarrhoea (n)* (n = 90) | Control (n)* (n = 91) | |||
espA | espB | espD | tir | |||
1 | beta | beta | beta | beta | O5, O15 (2), O26, O98, O111 (2), O119, O123, O128 (3), O153, ONT (6) and X09 | O15, O26, O97, O111, O153, O157, ONT (7) and OX09 |
2 | alpha | alpha2 | N1 | gamma2 | O2, O5, O55, O91, OX09 and NT (3) | O34, O49, O51, O69, O82, O91 and ONT (7) |
3 | beta2 | alpha | beta | alpha2 | O55, O126 and ONT (2) | O55 (3), O113 and O126 |
4 | beta2 | alpha | alpha | alpha | O119 (2), ONT and OR | O119 (2) and ONT (2) |
5 | beta2 | alpha | Negative | alpha | O20 and O55 | ONT and O111 |
6 | beta2 | alpha | gamma | alpha | O13 and ONT | O153, O55 and OR |
7 | gamma | gamma | gamma | gamma | O8 | O33, O55 (2) and ONT |
8 | Other | O2, O13, O25, O33, O55 (4), O69 (2), O75, O80, O85, O88 (2), O91, O101, O108, O111, O116, O119 (2), O146, O157, O171, OX10, OX18, OR and ONT (21) | O2, O13, O34, O35, O55, O73, O89, O101, O111, O116, O108, O128, O134, O142 (3), O153, OR, OX9 and ONT (25) |
, No. of isolates;n, No. of isolates; only expressed if >1.