Evolutionary history of Dengue virus type 4: Insights into genotype phylodynamics
Document Type
Article
Publication Date
2-15-2011
Abstract
Dengue virus type four (DENV-4) circulates in tropical and subtropical countries from Asia and the Americas. Despite the importance of dengue virus distribution, little is known about the worldwide viral spread. Following a Bayesian phylogenetic approach we inferred the evolutionary history of 310 isolates sampled from 37 countries during the time period 1956-2008 and the spreading dynamics for genotypes I and II. The region (tropical rainforest biome) comprised by Malaysia-Thailand was the most likely ancestral area from which the serotype has originated and spread. Interestingly, cross-correlation analysis on demographic time series with the Asian sequences showed a statistically significant negative correlation that could be suggestive of competition among genotypes within the same serotype.
Keywords
dengue
Divisions
fac_med
Publication Title
Infection, Genetics and Evolution
Publisher
Elsevier