Coupled effects of local movement and global interaction on contagion

By incorporating segregated spatial domain and individual-based linkage into the SIS (susceptible–infected–susceptible) model, we propose a generalized epidemic model which can change from the territorial epidemic model to the networked epidemic model. The role of the individual-based linkage between different spatial domains is investigated. As we adjust the timescale parameter τ from 0 to unity, which represents the degree of activation of the individual-based linkage, three regions are found. Within the region of 0
Highlights • Segregated spatial domain and individual-based linkage are incorporated into SIS model. • Activating a small number of individual-based linkage between different spatial domains can prompt the outbreak of epidemic globally. • Narrowing segregated spatial domain and reducing mobility are conducive to suppression of infectious disease.