Extended Data Figure 2: Inferred ___location of the trunk of H3N2 tree through time in the primary data set (a) and in a smaller secondary data set (b).
From: Global circulation patterns of seasonal influenza viruses vary with antigenic drift
Coloured width at each time point indicates the posterior support for viruses from a particular geographic ___location comprising the trunk of the phylogenetic tree. Colours correspond to coloured circles in persistence insets in Fig. 1. The secondary data sets consist of 1,391 H3N2 viruses, 1,372 H1N1 viruses, 1,394 Vic viruses and 1,240 Yam viruses.
