This text offers answers to questions many people have about the AIDS virus and how their immune systems are affected by it. Material is presented on origins, transmission, geographical distribution, and prevention of the AIDS virus. Also included is information on possible vaccines, tests, social reactions, and AIDS-ralated discrimination. The text is presented in a classroom-oriented, easy-to-read volume with photos, tables and line art. Included is a detailed, chronological list of significant AIDS-events from 1981-1994.