Serotypes, virulence genes and intimin types of Shiga toxin (verocytotoxin)-producing Escherichia coli isolates from minced beef in Lugo (Spain) from 1995 through 2003

Table 3 Seropathotypes (serotypes and virulence genes) of STEC isolates (n = 96).

Serotype	Total	stx ₁	stx ₂	eae	ehxA	Serotype	Total	stx ₁	stx ₂	eae	ehxA
O1:H20^a	1	+	-	+ (NR)^d	+	O112:H2^b	1	+	+	-	+
O1:H20^a	1	+	-	-	+	O113:H21^b	1	-	+	-	+
O2:H8^c	1	-	+	-	-	O113:H21^b	1	-	+	-	-
O2:H27^a	1	-	+	-	-	O116:H16^c	1	-	+	-	-
O2:H32	1	-	+	-	-	O116:H21^a	1	+	+	-	+
O2:H-^a	1	-	+	-	-	O118:H16^b	1	+	-	+ (β1)	+
O4:H4	1	-	+	-	-	O120:H10^c	1	-	+	-	-
O5:H-^b	1	+	+	+ (β1)	+	O128:H31^a	1	+	-	-	-
O6:H10	1	+	-	-	-	O141:H19	1	-	+	-	-
O6:H49^a	1	-	+	-	-	O145:H-^b	1	+	-	+ (γ1)	+
O8:H21^b	4	-	+	-	-	O146:H21^a	1	-	+	-	+
O8:H-^a	2	+	+	-	+	O146:H-^a	1	+	+	-	+
O15:H16	1	-	+	+ (β1)	-	O156:H8	1	-	+	+ (NR)	-
O15:H18^c	1	-	+	-	-	O157:H7^b	1	+	-	+ (γ1)	+
O17:H45	1	-	+	-	-	O157:H7^b	2	-	+	+ (γ1)	+
O20:H2^c	1	+	-	-	-	O157:H7^b	5	+	+	+ (γ1)	+
O21:H21	1	-	+	-	-	O162:H10	1	+	+	-	-
O22:H8^b	2	-	+	-	-	O166:H28^a	1	+	+	-	+
O22:H8^b	2	+	+	-	+	O167:H2	1	+	-	-	-
O26:H11^b	3	+	-	+ (β1)	+	O168:H8	1	-	+	-	-
O26:H-^b	1	-	+	-	-	O171:H2^a	2	-	+	-	-
O26:H42	1	+	-	+ (β1)	+	O174:H10	1	+	+	+ (β1)	-
O39:H21	1	-	+	-	+	O174:H21^b	1	-	+	-	-
O42:H21^c	1	-	+	-	-	O174:H-^b	2	-	+	-	-
O54:H-^c	1	-	+	-	-	OX178:H16^c	1	-	+	-	-
O64:H5^c	3	+	-	-	-	ONT:H4^b	1	-	+	-	-
O75:H8^a	1	+	-	-	+	ONT:H19^a	1	-	+	-	+
O75:H8^a	1	-	+	-	+	ONT:H21^a	1	+	+	-	+
O76:H7^b	1	-	+	+ (NR)	+	ONT:H21^a	1	+	+	-	-
O77:H41^a	2	-	+	-	+	ONT:H21^a	4	+	-	-	-
O88:H8	1	-	+	-	-	ONT:H21^a	2	-	+	-	-
O91:H-^b	1	+	+	-	+	ONT:H38	1	-	+	-	-
O103:H2^b	2	+	-	+ (ε1)	+	ONT:H?	1	-	+	-	+
O103:H-^b	1	+	-	+ (ε1)	+	ONT:H-^b	1	+	-	-	-
O110:H-^c	1	+	-	-	+	ONT:H-^b	1	-	+	-	-
O111:H-^b	2	+	-	+ (θ)	+	ONT:H-^b	1	-	+	-	-

^a Serotypes previously found in human STEC.
^b Serotypes previously associated with human STEC strains that cause hemolytic uremic syndrome (HUS).
^c New serotypes in STEC not reported in previous studies.
^dTyping of eae (intimin) genes was carried out years after the isolation of the strains. Some of them had lost the viability, so eae typing could not be carried out (NR).

ISSN: 1471-2180