The epidemiology of AIDS and HIV infection in the United States.
D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology* / Q000635:transmission; D000328:Adult; D000367:Age Factors; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D014481:United States; D014505:Urban Population