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

Table 2

Distribution of LT and ST enterotoxins and colonization surface antigens among Colombian ETEC clinical isolates.

Toxin gene type	Total number of isolates^a	CF type (s) produced	Number (%) of isolates
LT	21	CS21 + CFA/I	1 (4.7)
		CS21 + CS6	3 (14.2)
		CS21 + CS12	1 (4.7)
		CS21 + CS7	1 (4.7)
		CS21 + CS2 + CS3	1 (4.7)
		CS1	1 (4.7)
		CS7	1 (4.7)
		CS19	2 (9.5)
		CS6	1 (4.7)
		CF undetected^b	9 (42.8)
LT-ST	6	CS21	1 (16.6)
		CS5 + CS6	4 (66.6)
		CS5	1 (16.6)
ST	13	CS21 + CFA/I	12 (92.3)
		CF undetected^b	1 (8.3)

^aETEC isolates positive for any enterotoxin and positive or negative for any CSs.
^bCSs undetected by PCR reaction.