Cholera is an acute diarrheal illness caused by infection of the intestine with the bacteria Vibrio cholerae. Cholera was prevalent in the 1800s, but due to proper treatment of sewage and drinking water, has become rare in developed countries. V. cholerae can be found in contaminated food or water, especially in areas of poor sanitation and water treatment.
Escherichia coli, also referred to as E. coli, is a type of fecal coliform bacteria that is found in the intestines of healthy warm-blooded animals and humans. Most E. coli strains are harmless and serve a useful function in the body by stopping the growth of harmful bacteria species and by making necessary vitamins. However, some strains can be opportunistic pathogens, while others can cause gastrointestinal illness in healthy humans when ingested.