What are the serotypes of dengue?

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

The dengue virus has 4 related but antigenically distinct serotypes: DENV-1, DENV-2, DENV-3, and DENV-4. Genetic studies of sylvatic strains suggest that the 4 serotypes evolved from a common ancestor in primate populations approximately 1000 years ago and that all 4 separately emerged into a human urban transmission cycle 500 years ago in either Asia or Africa. [6, 38] Albert Sabin speciated these viruses in 1944. Each serotype is known to have several different genotypes. Viral genotype and serotype, and the sequence of infection with different serotypes, appear to affect disease severity.


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