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The maximum number of infected individuals in SIS epidemic models: Computational techniques and quasi-stationary distributions


Artalejo, Jesús R. and Economou, A. and López-Herrero, M.J. (2010) The maximum number of infected individuals in SIS epidemic models: Computational techniques and quasi-stationary distributions. Journal of Computational and Applied Mathematics, 233 (10). pp. 2563-2574. ISSN 0377-0427

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We study the maximumn umber of infected individuals observed during an epidemic for a Susceptible–Infected–Susceptible (SIS) model which corresponds to a birth–death process with an absorbing state. We develop computational schemes for the corresponding distributions in a transient regime and till absorption. Moreover, we study the distribution of the current number of infectedindividuals given that the maximum number during the epidemic has not exceeded a given threshold. In this sense, some quasi-stationary distributions of a related process are also discussed.

Item Type:Article
Uncontrolled Keywords:Stochastic SIS epidemic model; Maximum number of infected individuals; Extinction time; Transient distribution; Quasi-stationary distribution; Absorption probabilities
Subjects:Medical sciences > Biology > Ecology
ID Code:15803

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