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Disease spreading in populations of moving agents

A. Buscarino1, L. Fortuna1, M. Frasca1 and V. Latora2

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We study the effect of motion on disease spreading in a system of random walkers which additionally perform long-distance jumps. A small percentage of jumps in the agent motion is sufficient to destroy the local correlations and to produce a large drop in the epidemic threshold, that we explain in terms of a mean-field approximation. This effect is similar to the crossover found in static small-world networks, and can be furthermore linked to the structural properties of the dynamical network of agent interactions.


PACS

89.75.-k Complex systems

87.23.Ge Dynamics of social systems

89.75.Hc Networks and genealogical trees

Subjects

Environmental and Earth science

Statistical physics and nonlinear systems

Dates

Issue 3 (May 2008)

Received 10 December 2007, accepted for publication 8 March 2008

Published 16 April 2008



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