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. 2014 Oct 3;9(10):e109905. doi: 10.1371/journal.pone.0109905

Figure 1. Phylogenetic tree of 24 representative WNV lineage 2 complete genomic sequences.

Figure 1

The WNV sequence derived from a Hyalomma marginatum marginatum tick collected from a song thrush in Romania (marked with a black diamond) is most closely related to the human-derived WNV strain VLG_07 from Russia. All other WNV strains related to this Russian/Romanian cluster originate from Central and South Africa, suggesting an introduction of this WNV lineage 2 variant from Africa to Europe. The cluster of another independent introduction of a WNV lineage 2 to Central Europe is also indicated. Black stars indicate sequences for which information was obtained from McMullen et al. [12]. The percentage of replicates in the bootstrap test (1000 replicates) is shown next to the branches. Values less than 70% are hidden.