| Strain | Syndrome |
| Enterotoxigenic E. coli (ETEC) | Watery diarrhea |
| Enteropathogenic E. coli (EPEC) | Infantile diarrhea |
| Enterohemorrhagic E. coli (EHEC) | Hemorrhagic colitis and hemolytic uremic syndrome |
| Enteroinvasive E. coli (EIEC) | Dysentery |
| Enteroaggregative E. coli (EAEC) | Persistent diarrhea in children and patients infected with HIV |
