Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 443, Issue -, Pages 372-379Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physa.2015.09.092
Keywords
Stochastic SIVS epidemic model; Saturated incidence; Threshold; Persistence; Extinction
Categories
Funding
- NSFC [11271260, 11501148]
- Hujiang Foundation of China [B14005]
- Shanghai Leading Academic Discipline Project [XTKX2012]
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A stochastic version of the SIS epidemic model with vaccination (SIVS) is studied. When the noise is small, the threshold parameter is identified, which determines the extinction and persistence of the epidemic. Besides, the results show that large noise will suppress the epidemic from prevailing regardless of the saturated incidence. The results are illustrated by computer simulations. (C) 2015 Elsevier B.V. All rights reserved.
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