This article waslast modified on April 13, 2018.

A species of bacteria that normally resides in the gastrointestinal tract as harmless normal flora; these rod-shaped bacteria commonly cause urinary tract infections, and some strains produce toxins that cause diarrheal disease.

Related Content on this Site

Test: Shiga toxin-producing Escherichia coli 

Conditions: Diarrhea, Travelers' Diseases

In the News: New Report Points to Common Culprits in Foodborne Illnesses