a disease caused by the human immunodeficiency virus (HIV), which kills or impairs cells of the immune system and progressively destroys the body's ability to fight infections and certain cancers [..]

a systemic disease caused by parasite of the Trypanosoma brucei family and transmitted by the bite of the tsetse fly. There is West African trypanosomiasis and East African trypanosomiasis, referring [..]

a special protein produced by the body's immune system that recognizes and helps fight infectious agents and other foreign substances that invade the body.

to be without noticeable symptoms of disease.

an acute, infectious disease caused by the consumption of water or food contaminated with the bacterium Vibrio cholerae.

test to look into the rectum and colon through a long, flexible, narrow tube (called a colonoscope) with a light and tiny lens on the end.

a diarrheal infection caused by the parasite Cryptosporidium. The parasite is transmitted after drinking or swallowing contaminated food or water, including water swallowed while swimming.

a viral disease transmitted by Aedes mosquitoes mainly in tropical and subtropical areas of the world.

frequent, loose, and watery bowel movements.

a serious, infectious disease that produces a toxin (poison) and an inflammation in the membrane lining of the throat, nose, trachea, and other tissues.