Disease or Syndrome
lassa fever
Subclass of:
Hemorrhagic Fevers, Viral; Arenaviridae Infections
Definitions related to lassa fever:
  • A viral hemorrhagic fever that is caused by the Lassa virus, which is transmitted by contact with infected rodents; it is characterized by fever, headache, malaise, myalgia, and hearing loss.
    NCI
    U.S. National Cancer Institute, 2021
  • An acute febrile human disease caused by the LASSA VIRUS.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • 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.
    OrphaNet
    INSERM, 2021
  • Lassa fever is an often fatal arenavirus infection that occurs mostly in West Africa. It may involve multiple organ systems. Diagnosis is with serologic tests and polymerase chain reaction (PCR). Treatment includes IV ribavirin.
    Merck Manuals
    Merck & Co., Inc., 2025
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