Fig. 2.

Phylogenetic tree constructed on the basis of the whole-genome nucleotide sequences of 23 porcine deltacoronavirus (PDCoV) strains from different countries. The dendrogram was constructed using the neighbor-joining method in the MEGA software package, version 6.05 (http://www.megasoftware.net). Bootstrap resampling (1,000 replications) was performed, and bootstrap values are indicated for each node. Reference sequences obtained from GenBank are indicated by strain name. The scale bar represents 0.01 nucleotide substitutions per site