Figure 6.

Genealogical diversity of the virus at varying levels of coinfection when selection acts on both gene segments. Distribution of mean TMRCAs of the antigenic (red) and non-antigenic (blue) gene segments, obtained from 500 independent simulations for each model parameterization considered and calculated from over the last 20 years of each simulation. Three model parameterizations were considered, corresponding to different levels of coinfection: 0 per cent (β = 0), 5 per cent (β = 0.0125), and 9 per cent (β = 0.025). The solid gray lines in the subplots indicate the mean of the simulation’s TMRCA of the antigenic gene segment in the absence of coinfection.