What is the prognosis of dengue fever?

Updated: May 03, 2019
  • Author: Darvin Scott Smith, MD, MSc, DTM&H; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

Dengue fever is typically a self-limiting disease with a mortality rate of less than 1%. When treated, dengue hemorrhagic fever has a mortality rate of 2-5%. When left untreated, dengue hemorrhagic fever has a mortality rate as high as 50%. Survivors usually recover without sequelae and develop immunity to the infecting serotype.

The fatality rate associated with severe dengue varies by country, from 12-44%. In a 1997 Cuban epidemic, the fatality rate in patients who met criteria for severe dengue was approximately 6%. The mortality rate associated with dengue fever is less than 1%. Data from the 1997 Cuban epidemic suggest that, for every clinically apparent case of dengue fever, 13.9 cases of dengue infection went unrecognized because of absent or minimal symptoms.


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