TABLE 2.

Virulence genes detected in E. coli O147 stains analyzed by MLRT

No. of strains	Pathotype	f18	f4	lt	sta	stb	stx2	MLRT dendrogram cladea
41b	STEC/ETEC	+c			+	+	+	A, D
1b	STEC/ETEC	+				+	+	D
1b	STEC	+					+	D
1	STEC/ETEC	+			+	+	+	A
1	ETEC	+			+			A
3	ETEC	+			+	+		A
6	ETEC		+	+		+		C
1	ETEC			+		+		C
1	Noned		+					C
4	None							B, D

^aThe letters in this column reflect which clades the strains belong to in the MLRT dendrogram (Fig. 1).

^bIsolate belonging to strain set 1.

^c+, gene present.

^dNone, no virulence genes detected.