This work explores the dynamics of an epidemic considering an SIVIS (susceptible-infected-
vaccinated-infected-susceptible) epidemiological model, accounting for heterogeneous …

Rift Valley fever (RVF) is an emerging viral infectious disease capable of infecting livestock
and human populations. Owing to possible delay in RVF diagnosis, as well as its potential …

Timely and adequate supply of vaccines in disastrous situations has a key role in controlling
communicable diseases. This paper develops a specific option contract for proactively …

In this paper, we study the nonnegativity and stability properties of the solutions of a newly
proposed extended SEIR epidemic model, the so-called SE (Is)(Ih) AR epidemic model …

Recurrence of malaria symptoms after treatment constitutes one of the major factors affecting
malaria control in the population. The transmission of malaria will persist in the population, if …

In this paper, a deterministic compartmental eco-epidemiological model with optimal control
of Newcastle disease (ND) in Tanzania is proposed and analysed. Necessary conditions of …

In this paper, we propose a mosquito population suppression model which is composed of
two sub-models switching each other. We assume that the releases of sterile mosquitoes are …

This paper studies the nonnegativity and local and global stability properties of the solutions
of a newly proposed SEIADR model which incorporates asymptomatic and dead‐infective …

Ebola virus disease (EVD) can rapidly cause death to animals and people, for less than
1month. In addition, EVD can emerge in one region and spread to its neighbors in …

This paper introduces a multigroup COVID-19 model with immunity, in which the total
population of each group is partitioned into five compartments, that is, susceptible, exposed …