title: AIDS: The challenge to science and medicine.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000097:blood / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology / Q000276:immunology / Q000401:mortality / Q000628:therapy / Q000635:transmission; D000349:Africa; D035843:Biomedical Research; D017977:Deltaretrovirus; D004196:Disease Outbreaks; D004797:Enzyme-Linked Immunosorbent Assay; D005060:Europe; D035082:Federal Government; D005260:Female; D006205:Haiti; D006716:Homosexuality; D006801:Humans; D008297:Male; D011640:Public Policy; D040841:Resource Allocation; D012192:Retroviridae Infections / Q000628:therapy; D012306:Risk; D012737:Sex Factors; D019966:Substance-Related Disorders / Q000150:complications; D013601:T-Lymphocytes; D013997:Time Factors; D014481:United States