title: Lassa fever--new issues raised by field studies in West Africa.
mesh_terms: D000354:Africa, Western; D005814:Genes, Viral; D006801:Humans; D007835:Lassa Fever / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology*; D007836:Lassa virus / Q000235:genetics / Q000472:pathogenicity; D011379:Prognosis; D012254:Ribavirin / Q000627:therapeutic use; D012807:Sierra Leone; D014766:Viremia; D014774:Virulence
chemical_list: D012254:Ribavirin