Epidemic spreading in a scale-free network of regular lattices

• Autor(a) principal: Silva, S. L.
• Data de Publicação: 2007
• Outros Autores: Ferreira, J. A., Martins, M. L.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: https://doi.org/10.1016/j.physa.2006.11.027; http://www.locus.ufv.br/handle/123456789/22182
• topic: Epidemic spreading; Complex networks; Dengue and yellow fever

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.