Fig. 2

a Ugandan subtype distribution from full-genome sequences at three time periods. Bars show subtype proportions in the 1986 ‘historical’ genome set described here n = 109, the ‘intermediate set’ from Harris et al. (n = 46), and the ‘modern’ dataset from PANGEA (n = 465), b the subtype within URF envelope region over the same three time periods, and c the sampling date range of each period as box plots