title: Viral haemorrhagic fever in Zaire: update.
mesh_terms: D015023:Democratic Republic of the Congo / Q000453:epidemiology; D004196:Disease Outbreaks / Q000517:prevention & control; D029043:Ebolavirus; D006482:Hemorrhagic Fevers, Viral / Q000453:epidemiology* / Q000517:prevention & control; D006801:Humans; D014195:Travel