Bayesian time-scaled phylogeny of FMDV serotype SAT 1 with inferred geographical location states. Maximum clade credibility tree of SAT 1 viruses based on complete VP1 coding sequences inferred using BEAST assuming a constant size coalescent prior showing lineage divergence since the most recent common ancestor. The inferred geographical location of each tree node is marked by a colour code defined in the insert legend. The posterior clade probabilities as well as the posterior geographical location state (in parenthesis) are shown for selected tree nodes. East African lineages A and B are marked.