Virulence gene profiling of enterohemorrhagic (EHEC) and enteropathogenic (EPEC) Escherichia coli strains: a basis for molecular risk assessment of typical and atypical EPEC strains

Table 9 Serotypes of atypical EPEC Cluster 2 strains

Serotype^a	No. strains	Origin^b	%
O28:[H28]^c	4	h (4)	3.8
O49:H10	3	h (1), a (2)^c	2.8
O51:H49	3	h (3)	2.8
O55:H7	2	h (2)	1.9
O63:H6	2	h (2)	1.9
O69:H16	2	a (2)	1.9
O108:H9^d	6	a (6)	5.7
O111:H19	3	h (3)	2.8
O113:H6	2	h (2)	1.9
O114:[H49]	5	h (5)	4.7
O115:[H38]	3	h (3)	2.8
O123:H45	2	h (2)	1.9
O125:H6	3	h (3)	2.8
O128:[H2]	10	h (9), a (1)	9.4
O145:[H28] ^d	2	h (2)	1.9
O145:[H34]	5	h (5)	4.7
O157:[H16]	4	h (3), f (1)	3.8
O157:H26	2	h (2)	1.9
Ont:[H2]	3	h (1), a (2)	2.8
Ont:H6	2	a (2)	1.9
single^e	38	see footnote to table	35,8
Total	106		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)One strain was positive for the ehxA gene
d)All strains were positive for ehxA
e)serotypes and strains represented each by one isolate only: O4:H16 (a), O5:H- (a), O5:H11^d (a), O8:[H10] (h), O9:H10 (h), O26:[H11] (a), O37:H10 (a), O45:H9 (h), O62:H9^d (a), O65:[H25] (h), O69:[H2) (h), O70:H2 (h), O88:H8 (h), O102:[H19] (h),O103:H2^d (h), O119:H9 (h), O123:[H25] (h), O127:[H19] (h), O127:H21 (h), O145:H1^d (a), O145:H19^d (a), O150:H8 (f), O157:H2 (a), O157:H39 (h), O168:[H33] (h), O177:H26 (h), O177:H6 (a), Ont:H7^d (a), Ont:H10 (h), Ont:H11 (a), Ont:H14 (h), Ont:[H24] (h), Ont:[H26] (h), Ont:H40 (h), Ont:[H52] (h), Orough:H6 (h), Orough:H9 (h), and Orough:H10 (h).

ISSN: 1471-2180