TABLE 1.

EPEC strains used in this study

Strain	Serotype	Isolation:			Reference(s)	Source
		Yr	Location	Circumstances
10	O119:H+	1986	Santiago, Chile	Health center-based study	36, 46	CVDa
009-271082	O111:NM	1982	Lima, Peru	Infant cohort study	44	CVD
010-311082	O128:H+	1982	Lima, Peru	Infant cohort study	44	CVD
012-050982	O142:H+	1982	Lima, Peru	Infant cohort study	44	CVD
0659-79	O119:H6	1979	Florida	Infant diarrhea	18, 20, 35, 47	CDCb
2309-77	O111ab:H2	1977	California	Infant stool	47	CDC
Beta	O55:H6	1947	Aberdeen, Scotland	Infant diarrhea outbreak	17, 57	R. M. Robins-Browne
C771	O142:H6	Pre-1960	Djakarta, Indonesia	Infant diarrhea	51, 57	R. M. Robins-Browne
CA89-4221	NTc:H+	1989	Montreal, Quebec, Canada	Canine diarrhea	4, 14	J. Harel
DIF043256	O111:H2	1986	Morelos, Mexico	Acute infant diarrhea	9	A. Cravioto
E56/54	O128ab:H2	1953	England	Infant diarrhea outbreak	57, 69	R. M. Robins-Browne
E851/71	O142:H6	1971	Glasgow, Scotland	Infant diarrhea outbreak	7, 29, 34, 35, 47	B. Rowe
E990	O86:NM	1950	England	Infant diarrhea outbreak	57, 68	R. M. Robins-Browne
E2348/69	O127:H6	1969	Taunton, England	Infant diarrhea outbreak	7, 11, 34, 35, 47	CVD
HSP19/4	O86:H+	1995	São Paulo, Brazil	Acute infant diarrhea		I. C. A. Scaletsky
MA551/1	O55:NM	1998	São Luiz, Brazil	Acute infant diarrhea		I. C. A. Scaletsky
RN191/1	O111:H+	1996	Natal, Brazil	Acute infant diarrhea		I. C. A. Scaletsky
RN410/1	O119:H+	1998	Natal, Brazil	Pediatric control		I. C. A. Scaletsky
Stoke W	O111ab:NM	1947	Aberdeen, Scotland	Pediatric control	17, 57	R. M. Robins-Browne
Z188-93	0110:H6	1993	Germany	Avian diarrhea	60	J. E. Lohr

^aCVD, Center for Vaccine Development, University of Maryland School of Medicine, Baltimore. 

^bCDC, Centers for Disease Control and Prevention, Atlanta, Ga. 

^cNT, nontypeable.