Time Periodic Traveling Waves for a Periodic and Diffusive SIR Epidemic Model

2016 ◽  
Vol 30 (1) ◽  
pp. 379-403 ◽  
Author(s):  
Zhi-Cheng Wang ◽  
Liang Zhang ◽  
Xiao-Qiang Zhao
Keyword(s):  
Traveling Waves ◽  
Epidemic Model ◽  
Sir Epidemic Model ◽  
Periodic Traveling Waves ◽  
Sir Epidemic ◽  
Time Periodic

scholarly journals Traveling waves for a nonlocal dispersal SIR epidemic model with the mass action infection mechanism

2021 ◽  
Author(s):  
Xin Wu ◽  
Zhaohai Ma
Keyword(s):  
Equilibrium State ◽  
Traveling Waves ◽  
Epidemic Model ◽  
Mass Action ◽  
Sir Epidemic Model ◽  
Nonlocal Dispersal ◽  
New Model ◽  
Infection Mechanism ◽  
Sir Epidemic ◽  
Lasalle Theorem

This paper is concerned with a nonlocal dispersal susceptible–infected–recovered (SIR) epidemic model adopted with the mass action infection mechanism. We mainly study the existence and non-existence of traveling waves connecting the infection-free equilibrium state and the endemic equilibrium state. The main difficulties lie in the fact that the semiflow generated here does not admit the order-preserving property. Meanwhile, this new model brings some new challenges due to the unboundedness of the nonlinear term. We overcome these difficulties to obtain the boundedness of traveling waves with the speed $c>c_{\min}$ by some analysis techniques firstly and then prove the existence of traveling waves by employing Lyapunov–LaSalle theorem and Lebesgue dominated convergence theorem. By utilizing a approximating method, we study the existence of traveling waves with the critical wave speed $c_{\min}$. Our results on this new model may provide some implications on disease modelling and controls.

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