Figure 2. Global virus transitions and movement between
regions. 2a) Discrete
phylogeographic transitions between regional states. Transitions
represent virus movement between regional states, measured by Bayes
factor support (S.A.: South America, N.A.: North America). Cells with
Bayes factor values above 3.0 are framed by a green border (Kass &
Raftery, 1995). 2b)
Markov jumps, which are
represented as the percent of global transitions between regional states
along phylogenetic tree branches. Global transitions <1% are
not shown.