Figure 1From: Phylodynamic reconstruction of O CATHAY topotype foot-and-mouth disease virus epidemics in the PhilippinesAccumulation of nucleotide differences calculated from the putative root (HKN/12/91 isolate) for the Philippines database with time expressed in years. Size of the points increases with increased number of nt substitutions. Shaded area represents 95% confidence intervals for the fitted line.Back to article page