We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Dynamics of a Fractional-Order Delayed Model of COVID-19 with Vaccination Efficacy.
- Authors
Rihan, Fathalla A.; Kandasamy, Udhayakumar; Alsakaji, Hebatallah J.; Sottocornola, Nicola
- 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, R 0 , 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.
- Subjects
COVID-19 vaccines; COVID-19 pandemic; BASIC reproduction number; HOPF bifurcations; FISCAL year
- Publication
Vaccines, 2023, Vol 11, Issue 4, p758
- ISSN
2076-393X
- Publication type
Article
- DOI
10.3390/vaccines11040758