This study proposes a new fractional mathematical model to study the impact of vaccination
on COVID-19 outbreaks by categorizing infected people into non-vaccinated, first dose …

The efforts to eradicate tuberculosis (TB) globally has been on-going for over decades,
though the world is yet to be free from the disease. This, possibly, necessitated the inclusion …

The global population has suffered extensively as an effect of the coronavirus infection, with
the loss of many lives, adverse financial consequences, and increased impoverishment. In …

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 …

This study proposes a non-linear mathematical model for analysing the effect of COVID-19
dynamics on the student population in higher education institutions. The theory of positivity …

The use of mathematical modeling to study biological phenomena is one of the best
methods available for studying these phenomena. The development of mathematical …

This study explores the dynamics of crime and substance abuse within a population by
develo** a novel mathematical model that integrates social interactions, rehabilitation …

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

A mathematical model of the dual addiction dissemination dynamics of alcoholism and
smoking was created and examined in this work, along with cost-effectiveness and optimal …

This study presents a nonlinear mathematical model to capture the constant rates of three
different target cells class-specific drug therapeutic measures (namely, drug therapy for …