Cholera is an infection of the small intestine that causes a large amount of watery diarrhea.

Cholera is caused by the bacterium Vibrio cholerae. The bacteria releases a toxin that causes increased release of water in the intestines, which produces severe diarrhea.
Cholera occurs in places with poor sanitation, crowding, war, and famine. Common locations for cholera include: Africa, Asia, India, Mexico, South and Central America

People can get the infection by eating or drinking contaminated food or water. Risk factors include:

• Exposure to contaminated or untreated drinking water
• Living in or traveling to areas where there is cholera

Symptos include;

• Abdominal cramps
• Dry mucus membranes or mouth
• Dry skin
• Excessive thirst
• Glassy or sunken eyes
• Lack of tears
• Nausea
• Rapid dehydration
• Rapid pulse (heart rate)
• Sunken "soft spots" (fontanelles) in infants
• Unusual sleepiness or tiredness
• Vomiting

Treatment-
The objective of treatment is to replace fluid and electrolytes lost through diarrhea. Depending on your condition, you may be given fluids by mouth or through a vein. Antibiotics may shorten the time you feel ill.
The World Health Organization (WHO) has developed an oral rehydration solution that is cheaper and easier to use than the typical intravenous fluid. This solution of sugar and electrolytes is now being used internationally.

This must all be true as a read it in The Daily Mail