Citation: | Yantao Luo, Yunqiang Yuan, Zhidong Teng. ANALYSIS OF A DEGENERATED DIFFUSION SVEQIRV EPIDEMIC MODEL WITH GENERAL INCIDENCE IN A SPACE HETEROGENEOUS ENVIRONMENT[J]. Journal of Applied Analysis & Computation, 2024, 14(5): 2704-2732. doi: 10.11948/20230346 |
Considering the comprehensive impact of vaccination, quarantine and spatial heterogeneity on diseases dynamics, we formulates an SVEQIRV model with degenerate diffusion. Firstly, we discuss the well-posedness of the model solution. Then, we analyze the dynamic properties of model by using the semigroup theory and the global exponential attractor theory. We use the threshold feature $\lambda^{*}$ which is the principal eigenvalue of the eigenvalue problem associated with the linearized system at the disease free equilibrium, to describe the transmission dynamics of epidemics. The results show that the disease-free equilibrium is globally asymptotically stable when $\lambda^{*}<0$ and the system is uniformly persistent when $\lambda^{*}>0$. Finally, some numerical simulations and the sensitivity analysis are conducted to visualize the theoretical results and the effect of vaccination rate on disease dynamics.
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Schematic diagram for the disease transmission
The time evolution of the extinction of the system (2.1) with the constant coefficient.
The time evolution of the uniform persistence of the system (2.1) with the constant coefficient.
The time evolution of the extinction of the system (2.1).
The time evolution of the extinction of the system (2.1).
The time evolution of the uniform persistence of the system (2.1).
The time evolution of the uniform persistence of the system (2.1).
The effect of different levels of vaccination rates on the number of
The effect of different levels of vaccination rates on the number of