Fig. 3: Discrete phylogeographical analysis of Omicron in New Zealand.
Top: summary tree of the BA.5 analysis. Lineages are coloured by world (grey) or community (orange). Introductions from the world into the community are indicated by black stars *, while export events from the community to the border (i.e. new arrivals who acquired their infection from the New Zealand community) are indicated by red stars *. Similar trees for other variants can be found in Supporting Information. Bottom: posterior distribution of introduction counts (across all trees). The y-axes are proportional to Bayesian posterior support. The means [and 95% credible intervals] are indicated.
