In 2008, dengue virus serotype 4 (DENV-4) emerged in northeastern Peru, causing a large outbreak and displacing DENV-3, which had predominated for the previous 6 years. Phylogenetic analysis of 2008 and 2009 isolates support their inclusion into DENV-4 genotype II, forming a lineage distinct from strains that had previously circulated in the region.
No takes yet. Share an insight, caveat, or question.
Forshey et al. (2009) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: