Synergy in spreading processes: from exploitative to explorative foraging strategies |
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Authors: | Pérez-Reche Francisco J Ludlam Jonathan J Taraskin Sergei N Gilligan Christopher A |
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Affiliation: | Department of Chemistry, University of Cambridge, Cambridge, United Kingdom. p.perezreche@abertay.ac.uk |
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Abstract: | An epidemiological model which incorporates synergistic effects that allow the infectivity and/or susceptibility of hosts to be dependent on the number of infected neighbors is proposed. Constructive synergy induces an exploitative behavior which results in a rapid invasion that infects a large number of hosts. Interfering synergy leads to a slower and sparser explorative foraging strategy that traverses larger distances by infecting fewer hosts. The model can be mapped to a dynamical bond percolation with spatial correlations that affect the mechanism of spread but do not influence the critical behavior of epidemics. |
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