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BEAST analysis on concatenated dataset including all European clade 2.3.4.4b H5N6 HPAIV detected in 2017–2019. All gene segments of the influenza viruses included in the analysis were concatenated. The H5N6 viruses isolated in Denmark are in red with the rest being in black. The viruses within the clock tree can be divided into two major clusters, which have been denoted as cluster 1 (blue) and cluster 2 (orange). The scale bar depicts a timeline.
