Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 444, Issue -, Pages 576-581Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physa.2015.10.043
Keywords
Complex network; Epidemic spreading; Immunization
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Funding
- NSFC [61203153, 11331009]
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We propose an improved mean-field model to investigate immunization strategies of an SIS model in complex networks. Unlike the traditional mean-field approach, the improved model utilizes the degree information of before and after the immunization. The epidemic threshold of degree-correlated networks can be obtained by linear stability analysis. For degree-uncorrelated networks, the model is reduced to the SIS epidemic model in networks after removing the immunized nodes. Compared to the previous results of random and targeted immunization schemes on degree-uncorrelated networks, we find that the infectious disease has a lower epidemic threshold. (C) 2015 Elsevier B.V. All rights reserved.
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