Abstract
This paper is devoted to investigate the existence and nonexistence of traveling wave solution for a diffusive vector-borne disease model with nonlocal reaction and distributed delays. We demonstrate that the basic reproduction number \({\mathcal {R}}_0\) of the corresponding ordinary differential equation system as a threshold determines whether the model admits traveling waves or not and there exists a critical wave speed \(c_m^*>0\) when \({\mathcal {R}}_0>1\). Specifically, (i) As \({\mathcal {R}}_0>1\) and the wave speed \(c>c_m^*\), the existence of traveling waves for the system is established with the aid of a perturbed system; (ii) As \({\mathcal {R}}_0>1\) and \(0<c<c_m^*\), the nonexistence of traveling waves is proved via the two-sided Laplace transform; (iii) As \({\mathcal {R}}_0\le 1\) and \(c>0\), the nonexistence is obtained by utilizing the comparison principle. The theoretical results are applied to dengue fever epidemics. We study the effects of geographical movement, nonlocal interaction, incubation period and \({\mathcal {R}}_0\) on the threshold speed \(c_m^*\) for dengue fever.
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Acknowledgements
The authors would like to thank the anonymous reviewers and the editor for helpful suggestions which improved the manuscript. The research is supported by Natural Science Foundation of China (No. 11971013); an NSERC Discovery Grant; Postgraduate Research & Practice Innovation Program of Jiangsu Province (No. KYCX20_0169); China Postdoctoral Science Foundation (No. 2021M691577).
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This work is supported by Natural Science Foundation of China (No. 11971013); an NSERC Discovery Grant; Postgraduate Research & Practice Innovation Program of Jiangsu Province (No. KYCX20_0169); China Postdoctoral Science Foundation (No. 2021M691577)
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Wang, K., Zhao, H., Wang, H. et al. Traveling wave of a reaction–diffusion vector-borne disease model with nonlocal effects and distributed delay. J Dyn Diff Equat (2021). https://doi.org/10.1007/s10884-021-10062-w
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DOI: https://doi.org/10.1007/s10884-021-10062-w
Keywords
- Traveling wave solution
- Vector-borne disease model
- Nonlocal reaction and distributed delay
- Basic reproduction number
- Critical wave speed
Mathematics Subject Classification
- 35B40
- 35C07
- 35K57
- 92D30