Except for population size, all other epidemiological parameters were the same for all cities, that is, disease transmissibility and recovery rate. Some positional features of each node were also derived: Centrality, which is is a measure derived from the average distance of a given site to every other site in the network; Betweeness, which is the number of times a node figures in the the shortest path between any other pair of nodes; and Degree, which is the number of edges connected to a node.