Phenotypic and Genotypic Characterization of Enterotoxigenic Escherichia coli Clinical Isolates from Northern Colombia, South America

Table 1

ETEC and non-ETEC reference strains used as controls in PCR assays.

Type	Strain	Serotype	Toxin type	CS type	Source
ETEC	E24377A	O139:H28	LT/ST	CS1, CS3	Levine et al., 1984 [39]
ETEC	910980-2	O25:NM	STh	CS4, CS6	NMRC^b
ETEC	W6520A	O114:H49	LT	CS7	NMRC
ETEC	WS6866B-2	NK	LT	CS8 (i.e., CFA/III)	NMRC
ETEC	M421C1	NK	LT/STh	CS5, CS6	VU^c
ETEC	WS6474D	O68:H12	LTST	CS12 (i.e., PCFO159)	NMRC
ETEC	911205	O64:NM	LT	CS13 (i.e., PCFO9)	NMRC
ETEC	E7476A	O166:H27	STh	CS14	NMRC
ETEC	8786	O117:H4	ST	CS15 (i.e., 8786)	NMRC
ETEC	WS6788A	O8:H9	LT	CS17	NMRC
ETEC	ARG-2	O20:H−	LT	CS18 (i.e., PCFO20)	NMRC
ETEC	DS26-1	O8:H9	LT	CS19	NMRC
ETEC	WS7179A-2	O17:H45	LTST	CS20	NMRC
ETEC	H10407^a	O78:H11	LT/STh-STp	CFA/I	Evans et al., 1975 [40]
ETEC	145C2	NK	LT/STh	CS2, CS3, CS21	VU
ETEC	E9034A	NK	LT/STh	CS3/CS21	Levine et al., 1984 [39]
E. coli	DH5𝛼		None	None	VU

^aStrain used as a positive control for nonclassical virulence factors.
^bNMRC refers to Naval Medical Research Center.
^cVU refers to Gomez-Duarte’s laboratory collection at Vanderbilt University.
NK refers to not known.