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. 2014 Jan 31;8(3):384–388. doi: 10.1111/irv.12230

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© 2014 The Authors. Influenza and Other Respiratory Viruses Published by John Wiley & Sons Ltd.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Phylogenetic relationships of recently diverged A/goose/Guangdong /1/1996-like H5 hemagglutinin (HA) genes. A maximum likelihood tree of 198 HA nucleotide sequences from H5N1 viruses was constructed with 10 000 local support bootstraps (above branches) using FastTree2 (GTR+GAMMA) and rooted to A/goose/Guangdong /1/1996. Newly designated clades are underlined. Solid triangles denote HA clades of viruses that have not been in circulation since 2010 or earlier. Scale bar denotes nucleotide substitutions per site. Sequence data (FASTA) used to generate this figure are provided in Data S4.