Journal
PHYSICAL REVIEW LETTERS
Volume 104, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.258701
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Funding
- European EPIWORK project
- ONR
- DTRA
- Israel Science Foundation
- Israel Academy of Sciences and Humanities
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We derive an analytical expression for the critical infection rate r(c) of the susceptible-infectious-susceptible (SIS) disease spreading model on random networks. To obtain r(c), we first calculate the probability of reinfection pi, defined as the probability of a node to reinfect the node that had earlier infected it. We then derive r(c) from pi using percolation theory. We show that pi is governed by two effects: (i) the requirement from an infecting node to recover prior to its reinfection, which depends on the SIS disease spreading parameters, and (ii) the competition between nodes that simultaneously try to reinfect the same ancestor, which depends on the network topology.
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