TABLE 1.

Year and state or province of origin for isolates used in this study

Year of isolation	Host	Study(ies)	No. of isolates obtained at the following locations:
			WA	ID	OR	MT	WY	MO	KS	NE	TX	PA	AB	Total
1984	Human	1	1	0	0	0	0	0	0	0	0	0	0	1
1986	Human	1	3	0	0	0	0	0	0	0	0	0	0	3
1987	Human	1	4	0	0	0	0	0	0	0	0	0	0	4
1991	Bovine	Va	10	0	0	0	0	0	0	0	0	0	0	10
1993	Bovine	V	5	1	0	0	0	0	0	0	0	0	1	7
1994	Bovine	V	2	0	1	0	0	0	0	0	0	0	0	3
1995	Bovine	V	5	3	3	0	0	0	0	1	0	0	0	12
1996	Bovine	V	4	0	0	0	0	0	0	1	1	1	1	8
1997	Human	2	18	0	0	0	0	0	0	0	0	0	0	18
	Bovine	V	1	1	0	0	0	0	0	0	0	0	0	2
1998	Human	2, 3, 4	16	1	1	6	0	0	0	0	0	0	0	24
	Bovine	V	2	0	0	0	0	0	1	0	0	0	1	4
1999	Human	2, 3, 4	38	1	1	25	1	0	0	0	0	0	0	66
	Bovine	V	6	0	0	0	0	0	0	0	0	0	0	6
2000	Human	2, 3	42	1	1	0	0	0	0	0	0	0	0	44
	Bovine	V	7	0	0	0	0	0	0	0	0	0	0	7
2001	Human	3	27	1	1	0	0	0	0	0	0	0	0	29
	Bovine	V	8	1	0	0	0	0	0	0	0	0	1	10
2002	Human	2, 5	16	0	2	0	0	0	0	0	0	0	0	18
	Bovine	V	1	1	0	0	0	0	0	0	0	0	0	2
2003	Human	2, 5	18	0	2	0	0	3	0	0	0	0	0	23
2004	Human	2, 5	29	7	1	0	0	3	0	0	0	0	0	40
	Bovine	V	0	0	0	0	0	0	0	0	0	0	9	9
2005	Human	2, 5	5	0	0	0	0	7	0	0	0	0	0	12
Total	Human	All	217	11	9	31	1	13	0	0	0	0	0	282
	Bovine	V	51	7	4	0	0	0	1	2	1	1	13	80

^aV indicates that isolates were obtained in various cattle studies at Washington State University.