Cholera or Asiatic cholera is an acute infectious disease caused by strains of the bacterium Vibrio cholerae. The bacteria, which are found in fecal-contaminated food and water and in raw or undercooked seafood, produce a toxin that affects the intestines, causing diarrhea, severe fluid and electrolyte loss, and, if untreated, death. Treatment consists of administration of glucose and electrolyte solutions; vaccines are of limited effectiveness.

Chronic Fatigue Syndrome-chronic fatigue syndrome differs from the more typical feelings of fatigue; it is a debilitating disorder that interferes with a person's ability to participate in the activities of daily life Chronic Granulomatous Disease (CGD)-Chronic granulomatous disease (CGD) is actually a group of rare, inherited disorders of the immunesystem that are caused by defects in the immune system cells called phagocytes.

No effective vaccine has yet been developed for malaria. If you will be visiting an area of risk you will receive advice on how to minimize your risk and also a prescription for appropriate oral malaria prevention medication to take during your trip. No cholera vaccine is available in the United States, but fortunately the risk of cholera to travelers is negligible.

Cholera should be suspected when a child older than 5 years or an adult develops severe dehydration from acute watery diarrhoea (usually with vomiting), or any patient older than 2 years has acute watery diarrhoea when cholera is known to be occurring in the area. Younger children also develop cholera, but the illness may be difficult to distinguish from other causes of acute watery diarrhoea, especially rotavirus.