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)

^&astn, No. of isolates;n, No. of isolates; only expressed if >1.