Fig. 3.

Spatial dynamics of FMDV dispersal within Western and Southern Asia. (a) Size and directionality (expressed from the thin to the thick end) of discrete phylogeographic reconstructed migrations of FMDV lineages between countries (expressed by their centroids) are represented with Bezier curves, with their size proportional to the median number of Markov jumps inferred from the discrete phylogeographic analysis and summed across all three FMDV lineages. (b) Continuous phylogeographic diffusion in space and time showing the 95% highest posterior density (HPD) contours (kernel density estimates) computed for each FMDV lineages and sequentially colored by year with gradients ranging from light (time of the most recent common ancestor) to dark (time of the most recent sample). The HPD regions were derived from 100 trees uniformly sampled from the posterior space of the continuous phylogeographic model results.