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Phylogenetic tree constructed from nucleic acid data from flavivirus nonstructural protein 5 region by the neighbor-joining algorithm in MEGA (www.megasoftware.net). Numbers to the left of the nodes are bootstrap percentages (2,000 replications) for clades. Clade numbers correspond to clades identified by Kuno et al. (16). Enc, encephalitis; ME, meningoencephalitis.
