Volume 16, Number 2—February 2010
Letter
Avian Influenza (H5N1) Outbreak among Wild Birds, Russia, 2009
Figure

Figure. Phylogenetic tree constructed by neighbor-joining analysis (no. replications ×600) of the hemagglutinin gene segment of representative influenza virus (H5N1) isolates. Taxon names of the viruses isolated in Russia in 2006 and 2009 are in boldface. Scale bar indicates genetic distance.
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