Document Type
Article
Source of Publication
Vaccines
Publication Date
3-29-2023
Abstract
In this study, we provide a fractional-order mathematical model that considers the effect of vaccination on COVID-19 spread dynamics. The model accounts for the latent period of intervention strategies by incorporating a time delay τ. A basic reproduction number, R0, is determined for the model, and prerequisites for endemic equilibrium are discussed. The model’s endemic equilibrium point also exhibits local asymptotic stability (under certain conditions), and a Hopf bifurcation condition is established. Different scenarios of vaccination efficacy are simulated. As a result of the vaccination efforts, the number of deaths and those affected have decreased. COVID-19 may not be effectively controlled by vaccination alone. To control infections, several non-pharmacological interventions are necessary. Based on numerical simulations and fitting to real observations, the theoretical results are proven to be effective.
DOI Link
ISSN
Publisher
MDPI AG
Volume
11
Issue
4
First Page
758
Last Page
758
Disciplines
Medicine and Health Sciences
Keywords
COVID-19, fractional-order, time-delay, vaccination, bifurcation, stability
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Rihan, Fathalla A.; Kandasamy, Udhayakumar; Alsakaji, Hebatallah J.; and Sottocornola, Nicola, "Dynamics of a Fractional-Order Delayed Model of COVID-19 with Vaccination Efficacy" (2023). All Works. 5807.
https://zuscholars.zu.ac.ae/works/5807
Indexed in Scopus
no
Open Access
yes
Open Access Type
Gold: This publication is openly available in an open access journal/series