Phylogeographic analysis of human influenza A and B viruses in Myanmar, 2010–2015
Fig 5
Bayesian evolutionary tree of influenza B based on the nucleotide sequence of the HA gene.
The maximum clade credibility tree was inferred from 388 HA gene sequences including 46 influenza B sequences from Myanmar. The branches are in time scale in years and are colored according to the location of the most probable ancestor of descendant nodes. This Bayesian tree was generated using a molecular clock discrete phylogeographic approach as implemented in the BEAST software. Labels on the right of the figure indicate the genetic clades according to WHO classification. Branches that do not include Myanmar strains were collapsed as triangles.