Most E. coli are not pathogenic, but some serotypes can cause severe food poisoning or food contamination.
Escherichia coli is often used as a sign of fecal contamination E. coli, which is generally harmless to the human body, can also cause disease in the following situations:
When bacteria leave the intestine and enter the urinary tract can cause infections.
When bacteria enter the abdominal cavity due to perforations such as ulcers, it usually causes a fatal peritonitis infection.
Some strains of E. coli are toxic (some of which are similar to toxins that cause dysentery), can cause food poisoning, and the severity of the disease can be much different, especially fatal to children, the elderly and immunocompromised patients