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We study a class of SIRS epidemic dynamical models with a general non-linear incidence rate and transfer from infectious to susceptible. The incidence rate includes a wide range of monotonic, con- cave incidence rates and some non-monotonic…

Dynamical Systems · Mathematics 2017-07-21 Angel G. Cervantes-Pérez , Eric J. Avila-Vales

We study a multi-group SAIRS-type epidemic model with vaccination. The role of asymptomatic and symptomatic infectious individuals is explicitly considered in the transmission pattern of the disease among the groups in which the population…

Dynamical Systems · Mathematics 2023-05-23 Stefania Ottaviano , Mattia Sensi , Sara Sottile

We study an SAIRS-type epidemic model with vaccination, where the role of asymptomatic and symptomatic infectious individuals are explicitly considered in the transmission patterns of the disease. We provide a global stability analysis for…

Dynamical Systems · Mathematics 2021-12-30 Stefania Ottaviano , Mattia Sensi , Sara Sottile

An epidemic Susceptible-Vaccinated-Infected-Removed-Susceptible (SVIRS) model is presented on a weighted-undirected network with graph Laplacian diffusion. Disease-free equilibrium always exists while the existence and uniqueness of endemic…

Numerical Analysis · Mathematics 2025-03-25 Madhab Barman , Nachiketa Mishra

In this paper we consider an SIRS epidemic model under a general assumption of density-dependent mortality. We prove the global stability of the disease-free equilibrium and propose a Lyapunov function that allows to demonstrate the global…

Dynamical Systems · Mathematics 2018-12-31 Alberto d'Onofrio , Piero Manfredi , Ernesto Salinelli

In this paper, we consider a compartmental SIRS epidemic model with asymptomatic infection and seasonal succession, which is a periodic discontinuous differential system. The basic reproduction number $\mathcal{R}_0$ is defined and valuated…

Dynamical Systems · Mathematics 2017-08-15 Yilei Tang , Dongmei Xiao , Weinian Zhang , Di Zhu

We study the global dynamics of a reaction-diffusion SEIR infection model with distributed delay and nonlinear incidence rate. The well-posedness of the proposed model is proved. By means of Lyapunov functionals, we show that the disease…

Populations and Evolution · Quantitative Biology 2022-04-21 Abdesslem Lamrani Alaoui , Moulay Rchid Sidi Ammi , Mouhcine Tilioua , Delfim F. M. Torres

We investigate the global dynamics of a general Kermack-McKendrick-type epidemic model formulated in terms of a system of renewal equations. Specifically, we consider a renewal model for which both the force of infection and the infected…

Populations and Evolution · Quantitative Biology 2018-10-04 Michael T. Meehan , Daniel G. Cocks , Johannes Müller , Emma S. McBryde

We study the spread of an SIRS-type epidemic with vaccination on network. Starting from an exact Markov description of the model, we investigate the mean epidemic lifetime by providing a sufficient condition for fast extinction that depends…

Dynamical Systems · Mathematics 2020-11-23 Stefania Ottaviano , Stefano Bonaccorsi

We investigate the global dynamics of a renewal-type epidemic model with variable susceptibility. We show that in this extended model there exists a unique endemic equilibrium and prove that it is globally asymptotically stable when $R_0 >…

Dynamical Systems · Mathematics 2020-07-24 Michael T. Meehan , Daniel G. Cocks , Emma S. McBryde

In this chapter, we consider a reaction-diffusion SVIR infection model with dis-tributed delay and nonlinear incidence rate. The wellposedness of the proposed model is proved. By means of Lyapunov functionals, we show that the disease-free…

Dynamical Systems · Mathematics 2025-03-10 Achraf Zinihi , Mostafa Tahiri , Moulay Rchid Sidi Ammi

We investigate the global behaviour of a SIRI epidemic model with distributed delay and relapse. From the theory of functional differential equations with delay, we prove that the solution of the system is unique, bounded, and positive, for…

Classical Analysis and ODEs · Mathematics 2019-08-12 Abdelhai Elazzouzi , Abdesslem Lamrani Alaoui , Mouhcine Tilioua , Delfim F. M. Torres

We study a competitive infection-age structured SI model between two diseases. The well-posedness of the system is handled by using integrated semigroups theory, while the existence and the stability of disease-free or endemic equilibria…

Analysis of PDEs · Mathematics 2020-09-14 Quentin Richard

The aim of this paper is to study the dynamics of a reaction--diffusion SIS (susceptible-infectious-susceptible) epidemic model with a nonlinear incidence rate describing the transmission of a communicable disease between individuals. We…

Analysis of PDEs · Mathematics 2020-11-12 Lamia Djebara , Redouane Douaifia , Salem Abdelmalek , Samir Bendoukha

We propose and investigate an SEI infection's age model with a general class of nonlinear incidence rates. We give a necessary and sufficient condition for global asymptotic stability of the free-equilibrium related to the basic…

Dynamical Systems · Mathematics 2017-08-22 Sofiane Bentout , Tarik Mohamed Touaoula

We consider an epidemiological SIR model with an infection rate depending on the recovered population. We establish sufficient conditions for existence, uniqueness, and stability (local and global) of endemic equilibria and consider also…

Classical Analysis and ODEs · Mathematics 2021-07-09 Andres David Báez-Sánchez , Nara Bobko

The existence and local stability of some non-negative equilibrium points of a class of SIRS infectious disease models with non-linear infection and treatment rates are investigated under the condition that the total population is a…

Dynamical Systems · Mathematics 2024-03-08 Mengqi Tan

The dynamics of an SIS epidemic patch model with asymmetric connectivity matrix is analyzed. It is shown that the basic reproduction number $R_0$ is strictly decreasing with respect to the dispersal rate of the infected individuals, and the…

Dynamical Systems · Mathematics 2019-11-07 Shanshan Chen , Junping Shi , Zhisheng Shuai , Yixiang Wu

We consider the simple epidemiological SIS model for a general heterogeneous population introduced by Lajmanovich and Yorke (1976) in finite dimension, and its infinite dimensional generalization we introduced in previous works. In this…

Dynamical Systems · Mathematics 2022-11-29 Jean-François Delmas , Dylan Dronnier , Pierre-André Zitt

Transmission dynamics of infectious diseases are often studied using compartmental mathematical models, which are commonly represented as systems of autonomous ordinary differential equations. A key step in the analysis of such models is to…

Populations and Evolution · Quantitative Biology 2025-12-15 David J. D. Earn , C. Connell McCluskey
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