TABLE 4.

Number of cSTEC serotypes isolated from sheep fed pasture and a range of silage-grain-based diets

Serotype	Previously reported	Virulence factor profilec				Sampling 1 (pasture)	Sampling 2 (silage-grain)				Sampling 3 (silage-grain)				Sampling 4 (pasture)
		stx1	stx2	eae	ehxA		100a	90	77	53	100	90	77	53
O5:H−	Yes	+	+		+		1	1	2		1			1
		+			+							1
O5:HR	No	+	+	+		1	1
		+	+	+	+		1
O8:H2	Yes	+	+		+		1
O28:H21	Yes	+	+		+			1
O37:H10	No	+	+	+						1
O55:H20	No	+	+	+	+										1
O75:H8	Yes	+	+		+	1	2	4	1		2	1	1	1	1
		+			+			1
O88:H8	Yes	+	+	+			1
O91:H−	Yes	+	+		+	2	10	3	9	4	7	4	2	3	2
O112ab:H2	Yes	+	+	+	+			1
O123:H−	Yes	+	+		+		1	2	1				1		2
O128:H2	Yes	+	+		+		3					1	2		1
O158:HR	No	+		+	+					1
O172:H−	Yes	+	+		+		1
OR:H7	Yes	+			+	1
Ont:H49	Yes	+	+	+						1
Ont:Hndb		+	+		+			1			2		1	1
Ont:Hnd		+			+	1	2		1
Ont:Hnd		+	+	+	+			1
Ont:Hnd		+		+			1
Ont:Hnd			+	+	+										1

^aPercent silage.

^bOnt:Hnd, isolates with Ont serogroup, H type not determined.

^c+, gene detected by PCR.