UMEM Educational Pearls

Title: Viral Hemorrhagic Fever

Category: International EM

Keywords: International, Fever, Hemorrhagic (PubMed Search)

Posted: 4/9/2014 by Andrea Tenner, MD
Click here to contact Andrea Tenner, MD

General Information:

  • 5 families of RNA viruses
  1. Arenaviradae – Lassa fever
  2. Bunyaviradae – Crimean – Congo hemorrhagic fever (CCHF)
  3. Hantavirus - Hemorrhagic Fever with Renal Syndrome (HFRS)
  4. Flaviviruses – Yellow fever, Dengue
  5. Filoviridae – Ebola, Marburg
  • Vector transmission – humans, rodents, livestock, bush meat, mosquito, tick, contaminated feces
  • Incubation of 2-14 days

Clinical Presentation:

  • Mild – Mod: fever, fatigues, malaise, myalgia followed by coagulopathy (petechial rash)
  • Severe: shock, coma, delirium, seizure, liver/renal failure

Diagnosis:

  • Whole blood or serum can be sent to the CDC for testing (PCR, IgM/IgG, viral culture)
  • Leukopenia/leukocytosis, proteinuria, thrombocytopenia, ­LFTs/PT/PTT, may see DIC

Treatment:

  • Supportive
  • Contact and airborne precautions
  • Ribavirin – effective in patients with Lassa fever or HFRS (not approved by the FDA)
  • Convalescent-phase plasma has been used with success in some patients with Argentine hemorrhagic fever
  • FFP, high dose steroids has been reported to be successful in Crimean-Congo (CCHF)

Bottom Line:

  • Immediate isolate patents with fever and signs of coagulopathy
  • Supportive care primarily

University of Maryland Section of Global Emergency Health

Author: Veronica Pei

References

The CDC Yellow Book 2014 available at: http://wwwnc.cdc.gov/travel/yellowbook/2014/chapter-3-infectious-diseases-related-to-travel/viral-hemorrhagic-fevers