Increasing airline travel may facilitate co-circulation of multiple dengue virus serotypes in Asia
Fig 4
Maximum clade credibility trees of E gene of dengue virus serotypes in Asia.
(A) Phylogeographic molecular clock phylogeny of DENV-1 (n = 327), (B) DENV-2 (n = 357), (C) DENV-3 (n = 202, after removal of sylvatic lineages). Branches are colored according to most probable geographic location, as inferred using a Bayesian discrete non-reversible phylogeographic approach.