Epidemic spreading in a scale-free network of regular lattices

• Autor(es): Silva, S. L. ; Ferreira, J. A. ; Martins, M. L.
• Data: 2018
• Origem: Oasisbr
• Assunto(s): Epidemic spreading; Complex networks; Dengue and yellow fever
• Tipo de Documento: Artigo científico
• Idioma: Inglês

Descrição

The susceptible-infected-susceptible (SIS) epidemics in a scale-free network in which each node is a square lattice itself is investigated through large-scale computer simulations. The model combines a local contact process among individuals in a node (or city) with stochastic long-range infections due to people traveling between cities interconnected by the national transportation scale-free network. A nonzero epidemic threshold is found and it is approached with a power-law behavior by the density of infected individuals, as observed in the small-world network of Watts and Strogatz. Also, the epidemic propagation follows a 1/f , hierarchical dynamics from the highly connected square lattices to the smaller degree nodes in outbreaks with sizes distributed accordingly a Gaussian function.