Evolutionary relationships of endemic/epidemic and sylvatic dengue viruses.

Published

Journal Article

Endemic/epidemic dengue viruses (DEN) that are transmitted among humans by the mosquito vectors Aedes aegypti and Aedes albopictus are hypothesized to have evolved from sylvatic DEN strains that are transmitted among nonhuman primates in West Africa and Malaysia by other Aedes mosquitoes. We tested this hypothesis with phylogenetic studies using envelope protein gene sequences of both endemic/epidemic and sylvatic strains. The basal position of sylvatic lineages of DEN-1, -2, and -4 suggested that the endemic/epidemic lineages of these three DEN serotypes evolved independently from sylvatic progenitors. Time estimates for evolution of the endemic/epidemic forms ranged from 100 to 1,500 years ago, and the evolution of endemic/epidemic forms represents relatively recent events in the history of DEN evolution. Analysis of envelope protein amino acid changes predicted to have accompanied endemic/epidemic emergence suggested a role for domain III in adaptation to new mosquito and/or human hosts.

Full Text

Duke Authors

Cited Authors

  • Wang, E; Ni, H; Xu, R; Barrett, AD; Watowich, SJ; Gubler, DJ; Weaver, SC

Published Date

  • April 2000

Published In

Volume / Issue

  • 74 / 7

Start / End Page

  • 3227 - 3234

PubMed ID

  • 10708439

Pubmed Central ID

  • 10708439

International Standard Serial Number (ISSN)

  • 0022-538X

Digital Object Identifier (DOI)

  • 10.1128/jvi.74.7.3227-3234.2000

Language

  • eng

Conference Location

  • United States