Figure 3
From: Global spatiotemporal and genetic footprint of the H5N1 avian influenza virus
Phylogenetic analysis of HA segment of clade 2.2 H5N1 influenza viruses. Topology of phylogenetic relationship of studied 873 HA genes in four routes is shown by different color associated with its corresponding route. The phylogenetic tree is rooted by Gs/Gd/96 isolate with three possible sources shown in grey with country names annotated. Bootstrap values greater than 60 are marked at corresponding branches.