Table 1.

EHEC O157 strains used in this study and their origin

Strain	SBI genotypea	Yearb	Source of strainc	Cohort(s)d
CDC EDL 933	CG–3	1982	Raw hamburger meat implicated in hemorrhagic colitis outbreak	R1, R2, and R3
E2325	CG–1	1995	Bovine fecal, WA, USA	R1
E3046	CG-3	1995	Bovine fecal, WA, USA	R3
E5252	CG-3	1998	Bovine fecal, OR, USA	R3
E5880	BBG-5	1999	Water, WA, USA	R2
E6996	BBG-6	2000	Bovine fecal, WA, USA	R2
E12000 (Sakai)	CG-3	1996	Sakai City, Osaka Pref. Japan	NA
E12053	BBG-5	1993	Bovine fecal, WA, USA	P3
E12056	BBG-5	1999	Water, WA, USA	P1
E12057	BBG-6	1999	Bovine fecal, WA, USA	P2
E12058	BBG-6	2000	Bovine fecal, WA, USA	P1
E12059	BBG-5	2001	Bovine fecal, WA,USA	P2
E12061	CG-1	2004	Human clinical, WADOH, WA, USA	P2
E12062	CG-1	2004	Human clinical, WADOH, WA, USA	P5
E12063	CG-3	2004	Human clinical, WADOH, WA, USA	P2
E12064	CG-1	2005	Human clinical, WADOH, WA, USA	P1
E12065	CG-3	2005	Human clinical, WADOH, WA, USA	P3
E12066	CG-1	2006	Human clinical, WADOH, WA, USA	P3
E12067	CG-3	2006	Human clinical, WADOH, WA, USA	P1
E12068	BBG-5	1996	Bovine fecal, TX, USA	P5
E12149	BBG-6	1995	Bovine fecal, WA, USA	P4
E12153	BBG-6	2001	Bovine fecal, WA, USA	P4
E12154	CG-1	2004	Human clinical, WADOH, WA, USA	P5
E12155	CG-3	2006	Human clinical, WADOH, WA, USA	P5
E12156	BBG-5	1994	Bovine fecal, WA, USA	P5
E12157	BBG-6	1995	Bovine fecal, OR, USA	P3
E12377	CG-3	2004	Human clinical, WADOH, WA, USA	P5

^aCG, clinical genotypes; BBG, bovine-biased genotypes.

^bYear of the strain isolation or time deposited in WSU EHEC bank.

^cWADOH, Washington State Department of Health; Pref., Prefecture.

^dP, litter cohorts of piglets; R, experimental cohorts of rabbits; NA, not assigned.