AIDS: blood donor studies and screening programs.
D000163:Acquired Immunodeficiency Syndrome / Q000276:immunology / Q000517:prevention & control* / Q000635:transmission; D001782:Blood Donors / Q000523:psychology; D002353:Carrier State / Q000175:diagnosis / Q000276:immunology; D006716:Homosexuality; D006801:Humans; D007958:Leukocyte Count; D008019:Life Style; D008297:Male; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D012189:Retrospective Studies; D012306:Risk; D012698:Serologic Tests; D013601:T-Lymphocytes / Q000145:classification; D065227:Transfusion Reaction; D014836:Volition