Table 1.

STEC O157 strains used for sequence polymorphism discovery in the tir gene and a representative strain from each tir genotype

Strain	H antigen	Collection	Source	Reference	Discovery panel	tir genotypea
N245	H7	USMARC	Bovine	This paper	N	1
SS NE 1040	H7	USMARC	Bovine	[49]	N	2
CO 50-1	H7	USMARC	Bovine	[49]	Y	3
NE 972-1	H7	USMARC	Bovine	[49]	Y	3
KS 368-1	H7	USMARC	Bovine	[49]	Y	4
KS 546-2	H7	USMARC	Bovine	[49]	Y	4
NE 1370-3	H7	USMARC	Bovine	[49]	Y	4
TX 265-1	H7	USMARC	Bovine	[49]	Y	4
TX 376-2	H7	USMARC	Bovine	[49]	Y	4
TX 723-1	H7	USMARC	Bovine	[49]	Y	4
CO 147-1	H7	USMARC	Bovine	[49]	Y	4
NE 1127-1	H7	USMARC	Bovine	[49]	Y	5
TW07587	H7	EHEC 1–3	Human	[50]	Y	5
2	NM	Acheson	Human	b	Y	5
USDA81	H7	CDC	Human	This paper	N	6
CO 713-5	H7	USMARC	Bovine	[49]	Y	7
MARC 611	H7	USMARC	Bovine	[49]	Y	7
NE 1270-2	H7	USMARC	Bovine	[49]	Y	7
31277	H7	IDPH	Human	c	Y	7
1	H7	Mandrell	Human	d	Y	7
35150	H7	ATCC	Human	ATCC	Y	7
43889	H7	ATCC	Human	ATCC	Y	7
43890	H7	ATCC	Human	ATCC	Y	7
Sakai	H7	RMID	Human	[45]	Y	7
TW04863	H7	EHEC 1–2	Human	[50]	Y	7
N4009-114-4	H7	APHIS	Bovine	This paper	N	8
TW06555	H7	EHEC 1–6	Human	[50]	N	9
TW00116	H7	EHEC 1–4	Human	[50]	N	10

^a As described in Figure 1B.

^b Dr. David Acheson, DHHS, FDA, College Park, MD.

^c Enteric Lab, Illinois Department of Public Health.

^d Dr. Robert Mandrell, USDA, ARS, Albany, CA.