title: Risk of contracting hepatitis B from discarded syringes.
mesh_terms: D002648:Child; D006509:Hepatitis B / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D013287:Illicit Drugs; D009339:Needles; D013594:Syringes
chemical_list: D013287:Illicit Drugs