Is E.Coli helpful or harmful

Answer 1

E.coli can be helpful and harmful at the same time if you know what i mean. E.coli produces a toxin that can be very harmful to people. Also,e.coli is helpful because it help digest your food.

Answer 2

Helpful to humans in the right place; your small intestine. Can be very harmful in the wrong place; your drinking water infected with fecal matter.