What Is E. Coli?
By Joseph Bennington-CastroMedically Reviewed by Sanjai Sinha, MD
Some strains of E. coli are essential to good health — but others can cause severe illness.
Escherichia coli, or E. coli, is a type of bacteria commonly found in the intestines of warm-blooded animals, including humans.
The vast majority of E. coli strains are harmless, or even beneficial.
For instance, E. coli produces vitamins K and B6, and maintains a protective space in your gut for other beneficial bacteria.
However, some strains of E. coli can cause sickness and severe complications.
https://www.everydayhealth.com/e-coli/