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Congo/Crimean haemorrhagic fever

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Congo and Crimean haemorrhagic fever are caused by bunyavirus and nairovirus respectively, contracted from contact with infected cattle, sheep and goats, or even humans. The principal source is from bites from Hyalomma spp., or direct contact with infected animals and contact with blood or tissues of infected patients.

The condition develops after an incubation period of seven to twelve days, and distinguishing features include:

  • gingivitis
  • halitosis
  • pneumonia
  • renal failure uncommon
  • African infection usually milder

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