Fig. 4 Demographic history of PDCoV spike gene
(a) Demographic history was inferred by bayesian skyline analysis. The median and 95% HPD intervals were plotted. (b) A MCC tree of the S gene sampled in nine different countries. PDCoV were classified into three major lineages. The pie charts indicate the probability of chosen nodes. Except for the four chosen nodes shown, the probability of the rest of the nodes is greater than 90%, so they are not shown.