Table 2.

Escherichia coli and Shigellae Infection Patterns Identified in Cases and Controls Exclusively Infected With E. coli and/or Shigellae in 22 Communities in Northwestern Ecuador, 2003–2008

Mutually Exclusive Infection Categories	Cases (n = 883)		Controls (n = 2,431)
	No.	%	No.	%
Enteroinvasive Escherichia coli	11	1.2	48	2.0
Shigellae	6	0.7	16	0.7
Enterotoxigenic E. coli	22	2.5	23	0.9
Enteropathogenic E. coli	4	0.5	8	0.3
Enteroinvasive E. coli + Shigellae	5	0.6	9	0.4
Enteroinvasive E. coli + enterotoxigenic E. coli	2	0.2	1	0.0
Shigellae + enterotoxigenic E. coli	1	0.1	0	0.0
Shigellae + enteropathogenic E. coli	1	0.1	1	0.0
Enteroinvasive E. coli + Shigellae + enterotoxigenic E. coli	0	0.0	1	0.0
Total	52	5.9	107	4.4