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Phys Rev Lett. 2001 Apr 2;86(14):3200-3.

Epidemic spreading in scale-free networks.

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  • 1Departament de FĂ­sica i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Barcelona, Spain.

Abstract

The Internet has a very complex connectivity recently modeled by the class of scale-free networks. This feature, which appears to be very efficient for a communications network, favors at the same time the spreading of computer viruses. We analyze real data from computer virus infections and find the average lifetime and persistence of viral strains on the Internet. We define a dynamical model for the spreading of infections on scale-free networks, finding the absence of an epidemic threshold and its associated critical behavior. This new epidemiological framework rationalizes data of computer viruses and could help in the understanding of other spreading phenomena on communication and social networks.

PMID:
11290142
DOI:
10.1103/PhysRevLett.86.3200
[PubMed - indexed for MEDLINE]
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