The example network was built from 76 of largest cities of Brazil (>= 100 k habs). The bus routes between those cities formed the connections between the nodes of the networks. The number of edges in the network, derived from Epigrass output visualized on Google-Earth Figure 5 Epigrass output visualized on Google-Earth. Figure 4 Epigrass animation output. Sites are color coded (from red to blue) according to infection times. Bright red is the seed site (on the NE).