TABLE 1.

Strains used in this study

Strain name	Description	Reference
042	Prototype EAEC strain isolated from a child with diarrhea in Lima, Peru	25
aafA	Deletion mutant of aafA created using lambda red linear recombination method (40), also referred to as EAECaafA::km-sacB	44
aafA-repaired	Strain with aafA restored by pAA2 plasmid	This study
pAA(−)	042 that has been cured of the pAA2 plasmid	45
HS	Human commensal E. coli strain	46
Motile 042	Motile variant of 042 isolated after growth on 0.3% agar	This study
fliC	Aflagellar mutant that harbors the suicide plasmid pJP5603 inserted into the fliC gene	32
aap	Mutant that harbors the suicide plasmid pJP5603 inserted into the aap gene	30
ecp	Deletion mutant of ecpA created using lambda red linear recombination method (40)	33