Trends.  HIV/AIDS on the rise among older adults, researcher says.
D004522:Educational Status; D005260:Female; D015658:HIV Infections / Q000453:epidemiology* / Q000517:prevention & control; D015528:HIV Seroprevalence / Q000639:trends*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011314:Preventive Health Services / Q000458:organization & administration; D014481:United States / Q000453:epidemiology