Additional file 2. Supplementary Fig. 1. Phylogenetic relationships of representative internal protein-encoding genes for (A) PB2, (B) PB1, (C) PA, (D) NP, (E)M and (F)NS of the A/Taiwan/1/2021(H1N2)v virus. Classification of the specific evolutionary clades is indicated. The recently identified influenza A(H1)v viruses in Canada, Denmark, Brazil, Germany and the Netherlands are included as reference sequences shown in bold. Branch values of more than 70 are indicated.