Bayesian skyline demographic analysis for the prM/E alignment.

<p>Plot is a trace of the effective population size over time of the YFV alignment, using a Bayesian skyline model. Mean population size (black line) is displayed with upper and lower bounds of the 95% HPD interval (blue and purple lines). Constant value of the trace between years 1940 and 2010 is indicative of stability in the estimated viral population during that time.