Abstract
In the current study, we develop and analyze a Caputo derivative-based fractional-order SIR-type epidemic model. The exact value of the basic reproduction number and its importance in the model system has also been discussed. Then, we provide a mathematical analysis of this model focused on endemic and infection-free states. Next, the global behavior of the model, along with the existence of the Backward and Hopf bifurcations, has been extensively studied. The impacts of the model parameters on the system are analyzed. Also, we have formulated an optimum control problem incorporating a time-dependent treatment control variable and studied the effects of the control parameter on the disease dynamics. To confirm the obtained analytical results, the model is also numerically simulated using the predictor-corrector approach.
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Acknowledgements
The authors would like to thank Dr. Pushpendra Kumar, Guest Editor of the journal and organizer committee member of ICFCTAN-2023, for his continuous assistance regarding the preparation of this article. In addition, the authors would like to thank the handling editor Jian-Qiao Sun, Editor in Chief, International Journal of Dynamics and Control, and reviewers for their useful suggestions and constructive comments to improve the manuscript significantly.
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Rit, S., Jana, S., Khatua, A. et al. Complex dynamics of a Caputo derivative-based fractional-order SIR model incorporating saturated incidence and recovery. Int. J. Dynam. Control 12, 246–258 (2024). https://doi.org/10.1007/s40435-023-01294-3
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DOI: https://doi.org/10.1007/s40435-023-01294-3