Dynamics of a linear source epidemic system with diffusion and media impact

• Published in: Zeitschrift für angewandte Mathematik und Physik Vol. 75; no. 4
• Main Authors: Li, Wenjie, Zhao, Weiran, Cao, Jinde, Huang, Lihong
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.08.2024; Springer Nature B.V
• Subjects: Asymptotic methods; Diffusion rate; Engineering; Epidemics; Liapunov functions; Mathematical Methods in Physics; Risk management; Theoretical and Applied Mechanics; Threshold dynamics; Persistence; 34C15; Impact media; Small/large diffusion rate; Asymptotic profile behavior; 92B05; 34D20; Diffusion SIS epidemic model
• ISSN: 0044-2275; 1420-9039
• DOI: 10.1007/s00033-024-02271-2

This paper studies an impact of media epidemic system with diffusion and linear source. We first derive the uniform bounds of solutions to impact on media reaction diffusion system. Then, the basic reproduction number is calculated and the threshold dynamics of impact media reaction diffusion system is also given and the Kuratowski measure κ of non-compactness is also considered. In addition, assume the spatial environment is homogeneous, it is shown that the unique endemic equilibrium of the system is global stability by constructing suitable Lyapunov function. Finally, we discuss the asymptotic profile of the system when the diffusion rate of the susceptible (infected) individuals for the system tends to zero or infinity. The main results show that the activities of infected individuals can only be at low risk, and then the virus eventually will be extinct, that is, to control the entry of viruses from abroad and increase the detection of domestic viruses. Finally, some numerical simulations are worked out to confirm the results obtained in this paper.