Distinct rates and patterns of spread of the major HIV-1 subtypes in Central and East Africa
Fig 3
Velocity of spread of main HIV-1 lineages in Central and East Africa.
(a) Posterior estimates for the branch dispersal velocity of HIV-1 subtypes. Filled and non-filled distributions represent respectively estimates from analyses with and without informed root location priors (see Materials and Methods for details). The inset shows the number of location transitions per time unit obtained using a robust counting approach. (b) Change of the epidemic wavefront through time, measured as the furthest extent of the subtype’s inferred location of origin to inferred branch locations.