Fig. 1

BEAST analysis of complete or almost complete L and S segment nucleotide sequences. The resulting trees for the L segment (A) and S segment (B) were visualized using Figtree v1.10.4. The node ages, in years, are included on the major nodes, with the 95% confidence ranges displayed in parentheses below the median node ages. The isolates are grouped by their lineages, as represented by the bars to the right of the trees. The reverse axis represents the age, in years, from the most recent isolate. Colours indicate different geographical origins