Volume 82, Number 3, May 2008
|Number of page(s)||4|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||16 April 2008|
Disease spreading in populations of moving agents
Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi, Università degli Studi di Catania Viale A. Doria 6, 95125 Catania, Italy, EU
2 Dipartimento di Fisica e Astronomia, Università di Catania and INFN, Sezione di Catania Via S. Sofia, 64, 95123 Catania, Italy, EU
Accepted: 8 March 2008
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.Hc – Networks and genealogical trees / 89.75.-k – Complex systems / 87.23.Ge – Dynamics of social systems
© EPLA, 2008
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