Type of viral haemorrhagic fever (also dengue fever, Lassa fever, Ebola).

  • Spread by Aedes mosquitos
  • Incubation period = 2 - 14 days

Clinical features

  • May cause mild flu-like illness lasting less than one week
  • Classic description involves sudden onset of high fever, rigors, nausea & vomiting. Bradycardia may develop. A brief remission is followed by jaundice, haematemesis, oliguria
  • If severe jaundice, haematemesis may occur
  • Councilman bodies (inclusion bodies) may be seen in the hepatocytes