AIDS: a new disease.
D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology* / Q000635:transmission; D005060:Europe; D005260:Female; D049668:History, 15th Century; D049669:History, 16th Century; D006801:Humans; D008297:Male; D013587:Syphilis / Q000266:history / Q000635:transmission; D014481:United States; D014900:West Indies