what is cholera ?
Cholera is an infectious disease caused by the bacterium Vibrio cholerae. It infects the small intestine. There are many types (strains) of the Vibrio cholera bacteria. Some of them cause more serious illnesses than others. Because of this, some people who get cholera have no symptoms; others have symptoms that are not very bad, and others have very bad symptoms. The most common symptom is large amounts of watery diarrhea.