title: Lack of evidence of HIV infection in drug abusers at present.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology*; D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013019:South Africa; D019966:Substance-Related Disorders