Fig. 3: Time-scaled phylogenetic subtrees from the current outbreak.

The source of introductions was inferred by ancestral character reconstruction (ACR). A1–C1 Subtrees corresponding to each inferred introduction, with colourstrips indicating lineages (colours match Fig. 4) identified from clustering by patristic distance (Supplementary Fig. 4) and sequenced case locations (province-level) to match (D). Internal nodes mark the tMRCA of each cluster and lineage (circles) and inferred province-level ACR location (squares) for each cluster’s ancestral node coloured accordingly. A2–C2 Locations of sequences from Tablas (with points jittered) coloured by lineage and D provinces in the Philippines coloured according to ACR.