In 1997, scientists completed chemical identification of all the genes in E. coli. Outside the laboratory, most strains of E. coli live harmlessly in the intestines of people, cattle, and other animals. But E. coli can produce serious illness if it causes blood or urinary infections.
Most patients recover in about a week.
Infections have also been traced to contaminated vegetables and unpasteurized milk and apple cider. Infected people can also pass the illness to others. The best ways to prevent infection are to cook ground meat completely, clean fruits and vegetables thoroughly, and wash hands often. Anyone with severe or bloody diarrhea should see a doctor promptly to identify the cause and get proper treatment. How to cite this article.