We construct and analyse a nonlinear deterministic mathematical model for the transmission
dynamics of COVID-19 with healthy diet as a control. The effective reproduction number, R …

Arrival of a new disease marks a yearlong destruction of human lives and economy in
general, and if the disease turns out to be a pandemic the loss is frightening. COVID-19 is …

Abstract The coronavirus disease 2019 (COVID-19) remains serious around the world and
causes huge deaths and economic losses. Understanding the transmission dynamics of …

Mathematical modeling can be utilized to find out how the coronavirus spreads within a
population. Hence, considering models that can precisely describe natural phenomena is of …

This paper develops a fractional-order model of COVID-19 with vaccination. The model is
well designed by including both the efficacy and inefficacy of vaccinations in humans …

We develop a new stochastic programming methodology for determining optimal
vaccination policies for a multi-community heterogeneous population. An optimal policy …

In this study, we model the fractal-fractional system of the Computer virus problem using the
Atangana–Baleanu operator. Moreover, we have presented the existence and the …

Hematopoietic stem cells are essential for a number of biological activities, such as immune
system regulation, homeostasis balance maintenance, and inflammation and microbe …

Diabetes affects the epidemiology of COVID-19 (Coronavirus Disease 2019), is correlated
with the exorbitant threat of COVID-19 incidence and failure of treatment. Hence, studying …

In many of our real life problems, we often come across situations where there is no
information about the priority weights which make it difficult to analyze the objects under …