Data S1. H5N1 evolution working group members.

Data S2. The nucleotide sequence alignment used to generate the tree shown in Figure 1 is provided as an electronic text file in FASTA format.

Figure S1. Neighbor-joining tree of 2947 H5N1 HA sequences constructed using PAUP* v4.0b10. The tree was rooted using AturkeyEngland50921991

Figure S2. (A–G) Clade-specific neighbor-joining trees with 1000 bootstrap replicates were generated for each clade and rooted to either AgooseGuangdong196 or a common outlier to that clade.

IRV_298_sm_DataS1.docx35KSupporting info item
IRV_298_sm_figureS2.eps34088KSupporting info item
IRV_298_sm_figureS1.eps14396KSupporting info item
IRV_298_sm_DataS2.txt338KSupporting info item

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