There are many types of E. coli, and most of them are harmless. But some can cause bloody diarrhea. Some strains of E. coli bacteria (such as a strain called O157:H7) may also cause severe anemia or kidney failure, which can lead to death.Other strains of E. coli can cause urinary tract infections or other infections. You get an E. coli infection by coming into contact with the feces, or stool, of humans or animals.This can happen when you drink water or eat food that has been contaminated by feces. E. coli can get into meat during processing.ther strains of E. coli can cause urinary tract infections or other infections. You get an E. coli infection by coming into contact with the feces, or stool, of humans or animals. This can happen when you drink water or eat food that has been contaminated by feces.