Volume 24, Number 10—October 2018
Research
Molecular Evolution, Diversity, and Adaptation of Influenza A(H7N9) Viruses in China
Figure 4

Figure 4. Reconstruction of amino acid changes along trunk of lineage B phylogenies of influenza A(H7N9) viruses, China. Maximum clade credibility tree of hemagglutinin gene sequences from lineage B is shown. Branches are colored according to geographic locations, as in Figure 3. Thicker lines indicate the trunk lineage leading up to the current fifth influenza epidemic wave. Amino acid changes along the trunk are indicated. Red branches indicate sites undergoing parallel amino acid changes across multiple lineages. Mutations correspond to H3 numbering scheme. *Indicates uncertainty about the phylogenetic position of the A135V and S128N mutations because branch posterior support is low.
1These authors contributed equally to this article.
2These senior authors jointly supervised this study.