title: 15,000 Canadians are HIV positive and don't know it. Injection drug use now number one risk factor.
mesh_terms: D002170:Canada / Q000453:epidemiology; D005260:Female; D015658:HIV Infections / Q000150:complications / Q000453:epidemiology* / Q000635:transmission; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D012307:Risk Factors; D015819:Substance Abuse, Intravenous / Q000150:complications*