title: Immunology of groups at risk for acquired immune deficiency syndrome.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000276:immunology*; D006205:Haiti / Q000208:ethnology; D006467:Hemophilia A / Q000276:immunology; D006716:Homosexuality; D006801:Humans; D008206:Lymphatic Diseases / Q000276:immunology; D008297:Male; D012306:Risk; D011477:Sex Work; D019966:Substance-Related Disorders / Q000276:immunology; D065227:Transfusion Reaction