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Evolutionary Dynamics and Emergence of Panzootic H5N1 Influenza Viruses

Figure 4

Dated phylogeny of the HA gene of H5N1 viruses isolated in Asia.

The tree is scaled to time (horizontal axis) and was generated using the SRD06 codon model and uncorrelated relaxed clock model. Nodes correspond to mean TMRCAs and blue horizontal bars at nodes represent the 95% HPDs of TMRCAs. TMRCAs and HPDs for each of the major H5N1 lineage are given in Table 4.

Figure 4

doi: https://doi.org/10.1371/journal.ppat.1000161.g004