Lassa fever

What is Lassa fever?

Lassa fever (LF) is a potentially severe viral hemorrhagic disease caused by Lassa virus and characterized by initial fever and malaise followed by gastrointestinal symptoms and, in severe cases, bleeding, shock and multi-organ system failure.

Other condition names

  • LF
  • Lassa hemorrhagic fever


  • Europe: <1 in 1,000 000

Age of Onset

  • All ages
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