AIDS and intravenous drug abusers.
D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission*; D017977:Deltaretrovirus; D006801:Humans; D007275:Injections, Intravenous; D012192:Retroviridae Infections / Q000635:transmission*; D012306:Risk; D019966:Substance-Related Disorders / Q000150:complications*