Figure 2

Skygrid plots for the different clusters. Phylodynamic analyses of HIV-1 pol gene for subtype G and CRF02_AG isolated in Nigeria. Bayesian Skygrid plots representing the changes in the effective population size of the virus (Ne) over time. The solid lines represent the estimated median log effective population size and the colour-coded shaded areas represent the 95%HPD intervals for the different clusters circulating in Nigeria. The gray-shaded area starts at the period when ART was introduced in Nigeria.