Epidemic spreading in a scale-free network of regular lattices

S.L. Silva, J.A. Ferreira and M.L. Martins

Physica A: Statistical Mechanics and its Applications, 2007, vol. 377, issue 2, 689-697

Abstract: 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.

Keywords: Epidemic spreading; Complex networks; Dengue and yellow fever (search for similar items in EconPapers)
Date: 2007
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:377:y:2007:i:2:p:689-697

DOI: 10.1016/j.physa.2006.11.027

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