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Global dynamics of a Filippov epidemic system with nonlinear thresholds

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  • Dong, Cunjuan
  • Xiang, Changcheng
  • Xiang, Zhongyi
  • Yang, Yi

Abstract

Due to the intermittency of prevention and control measures, the right-hand function of the dynamic model describing the spread of infectious disease is often induced to be nonsmooth, which can be formulated by employing Filippov systems and have been widely studied recently. Note that these systems only consider the number of infected individuals as the switching threshold. However, infectious disease control depends not only on the number of infected individuals, but also on the change rate of infected individuals. To address this, we propose a Filippov system with media-influenced nonlinear thresholds which integrate the change rate of infected individuals into the threshold strategy. The main results reveal that the proposed threshold strategy can induce the complex dynamic behavior, including multiple sliding segments and pseudo-equilibrium. Furthermore, our main results show that variations of threshold (ET) and the nonlinear threshold control strategy not only lead to rich dynamics including bistability, but also have important implications for disease control.

Suggested Citation

  • Dong, Cunjuan & Xiang, Changcheng & Xiang, Zhongyi & Yang, Yi, 2022. "Global dynamics of a Filippov epidemic system with nonlinear thresholds," Chaos, Solitons & Fractals, Elsevier, vol. 163(C).
    • Handle: RePEc:eee:chsofr:v:163:y:2022:i:c:s0960077922007524
    DOI: 10.1016/j.chaos.2022.112560
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    References listed on IDEAS

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    1. Zhang, Yunhu & Song, Pengfei, 2021. "Dynamics of the piecewise smooth epidemic model with nonlinear incidence," Chaos, Solitons & Fractals, Elsevier, vol. 146(C).
    2. Li, Wenxiu & Chen, Yuming & Huang, Lihong & Wang, Jiafu, 2022. "Global dynamics of a filippov predator-prey model with two thresholds for integrated pest management," Chaos, Solitons & Fractals, Elsevier, vol. 157(C).
    3. Li, Jianquan & Xie, Xin & Chen, Yuming & Zhang, Dian, 2021. "Complex dynamics of a tumor-immune system with antigenicity," Applied Mathematics and Computation, Elsevier, vol. 400(C).
    4. Qin, Wenjie & Tang, Sanyi, 2014. "The selection pressures induced non-smooth infectious disease model and bifurcation analysis," Chaos, Solitons & Fractals, Elsevier, vol. 69(C), pages 160-171.
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    Cited by:

    1. Li, Wenjie & Guan, Yajuan & Cao, Jinde & Xu, Fei, 2024. "Global dynamics and threshold control of a discontinuous fishery ecological system," Chaos, Solitons & Fractals, Elsevier, vol. 182(C).

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