Table 1.

Origins of the 292 Escherichia coli Study Isolates

Source (No. [%]), Syndrome	Context	Locale	Years	Isolates Selected From Source Collection, No.			ExPECJJa Isolates in Source Collection, %	Reference(s)
				Total	ExPECJJa	Non-ExPECJJa
Feces (116 [40])
Not applicableb	Student health servicec	Minneapolis, MN	1999–2000	39	22	17	37	[15]
Not applicableb	Hospitalized veteransd	Minneapolis, MN	1996–1999	77	41	36	38	[5]
Urine (79 [27])
Cystitis	Student health servicec	Minneapolis, MN	1999–2000	39	23	16	41	[15]
Pyelonephritis	Ambulatory women	Multicenter (USA)	1994–1997	40	21	19	69	[15, 16]
Blood (97 [33])
Urosepsis	Four hospitalse	Seattle, WA	1981–1985	67	59	8	88	[6, 17]
Bacteremia	Hospitalized veteransd	Minneapolis, MN	1996–1999	30	21	9	81	[5]

^aIsolates were defined as extraintestinal pathogenic E. coli (ExPEC_JJ) if ≥2 of the following virulence factor genes were present: papAH and/or papC, sfa/focDE, afa/draBC, iutA, and kpsM II.

^bDonors of fecal specimens had no clinical evidence of infection.

^cUniversity of Minnesota.

^dMinneapolis Veterans Affairs Medical Center.

^fHarborview Medical Center, Public Health Service Hospital, Seattle Veterans Affairs Medical Center, and University of Washington Medical Center.