Fig. 1

ML phylogenetic tree based on the full-length genome sequence  of 166 PDCoV strains was generated using IQ-TREE multicore version 1.6.12 with the best-fit model GTR + F + I + G4 with 1000 bootstraps. The China viruses are indicated with red branches. The China viruses that are sorted in  GI-a and GII-a subgenogroups are shown with red branches plus red circles. The human Haiti PDCoV strains are indicated with blue circles. The scale bar represents 0.003 nucleotide substitutions per site. The information on each virus is detailed in Supplementary Fig. 1