Escherichia coli (E. coli) bacteria are typically found in the intestinal tract of healthy individuals and animals. While most strains of E. coli are harmless or only cause mild diarrhea, certain strains like E. coli O157:H7 can result in severe symptoms such as intense abdominal cramping, bloody diarrhea, and vomiting.
Exposure to E. coli can occur through contaminated water or food, particularly raw vegetables and undercooked ground beef. In most cases, healthy adults are able to recover from E. coli O157:H7 infection within a week. However, young children and elderly individuals are at a greater risk of developing a potentially life-threatening form of kidney failure as a result of the infection.