In this paper, we study a dengue model governed by an eight-dimensional autonomous
system of ordinary differential equations using dynamical system theory. Appropriate …

Illicit drug use (IDU) among students is now one of the increasingly major global public
health issues. It can lead to students' poor academic performance, physical and mental …

In this study, a new mathematical model for malaria dynamics featuring all the three
categories of recurrent malaria—recrudescence, relapse and re-infection—is presented and …

This paper studies a nonlinear S I-model featuring vertical transmission and saturated
incidence terms. The model is analyzed by utilizing some dynamical system tools to assess …

Monkeypox is a zoonosis currently emerging and reemerging in some parts of the world.
Though the disease is primarily transmitted to humans from infected animals, other modes of …

The problem of illicit drug use with its associated hazardous effects on social behavior and
human population dynamics require an intervention. This paper presents the optimal …

The burden of illicit drug use and terrorism has become a significant health and social
problem in many developing countries. Illicit drug use and terrorism have negatively affected …

To study the consumption of heroin in a heterogeneous environment, we propose and
analyze a spatiotemporal model with a distributed delay. Using the spectral theory, we …

In this study, the mathematical model of the cholera epidemic is formulated and analyzed to
show the impact of Vibrio cholerae in reserved freshwater. Moreover, the results obtained …

Illicit drug use and banditry (IDB) have become public health and social issues in the world.
In recent years, IDB-related violence has led to the deaths of many people in different …