Are sexually active older Americans your next high-risk group?
D015492:AIDS Serodiagnosis / Q000706:statistics & numerical data*; D017088:AIDS-Related Opportunistic Infections / Q000453:epidemiology; D000368:Aged; D005260:Female; D015658:HIV Infections / Q000188:drug therapy / Q000453:epidemiology* / Q000635:transmission; D006266:Health Education; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D015229:Sexually Transmitted Diseases, Viral / Q000188:drug therapy / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology