title: Serious unexplained illness among drug injectors.
mesh_terms: D003141:Communicable Diseases / Q000453:epidemiology*; D006556:Heroin Dependence / Q000453:epidemiology*; D006801:Humans; D015819:Substance Abuse, Intravenous / Q000453:epidemiology*; D006113:United Kingdom / Q000453:epidemiology