Epidemic threshold in structured scale-free networks

Details Epidemic threshold in structured scale-free networks Epidemic threshold in structured scale-free networks

2002-05-21

arxiv.org/abs/cond-mat/0205439v1

Phys. Rev. Lett. 89, 108701 (2002)

Physics

Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.89.108701

We analyze the spreading of viruses in scale-free networks with high clustering and degree correlations, as found in the Internet graph. For the Suscetible-Infected-Susceptible model of epidemics the prevalence undergoes a phase transition at a finite threshold of the transmission probability. Comparing with the absence of a finite threshold in networks with purely random wiring, our result suggests that high clustering and degree correlations protect scale-free networks against the spreading of viruses. We introduce and verify a quantitative description of the epidemic threshold based on the connectivity of the neighborhoods of the hubs.

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