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Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Aug;86(2 Pt 2):026106. Epub 2012 Aug 10.

Epidemic spreading on interconnected networks.

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Departament de Física Fonamental, Universitat de Barcelona, Barcelona, Spain.


Many real networks are not isolated from each other but form networks of networks, often interrelated in nontrivial ways. Here, we analyze an epidemic spreading process taking place on top of two interconnected complex networks. We develop a heterogeneous mean-field approach that allows us to calculate the conditions for the emergence of an endemic state. Interestingly, a global endemic state may arise in the coupled system even though the epidemics is not able to propagate on each network separately and even when the number of coupling connections is small. Our analytic results are successfully confronted against large-scale numerical simulations.

[Indexed for MEDLINE]

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