title: Drug abuse: a new problem.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission*; D002675:Child, Preschool; D006509:Hepatitis B / Q000635:transmission*; D006801:Humans; D009339:Needles; D012037:Refuse Disposal; D019966:Substance-Related Disorders; D013594:Syringes; D014951:Wounds, Stab / Q000150:complications