Abstract
In this paper, we propose a time-periodic reaction–diffusion model which incorporates seasonality, spatial heterogeneity and the extrinsic incubation period (EIP) of the parasite. The basic reproduction number \(\mathcal {R}_0\) is derived, and it is shown that the disease-free periodic solution is globally attractive if \(\mathcal {R}_0<1\), while there is an endemic periodic solution and the disease is uniformly persistent if \(\mathcal {R}_0>1\). Numerical simulations indicate that prolonging the EIP may be helpful in the disease control, while spatial heterogeneity of the disease transmission coefficient may increase the disease burden.
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Acknowledgements
We are grateful to two anonymous referees for careful reading and valuable comments which led to improvements of our original manuscript. We also sincerely thank Lei Zhang for his helpful discussions on the numerical computation of \(\mathcal {R}_0\).
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Bai’s research was supported by NSF of China (11401453); Peng’s research was supported by NSF of China (Nos. 11671175, 11271167, 11571200), the Priority Academic Program Development of Jiangsu Higher Education Institutions, Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (No. PPZY2015A013) and Qing Lan Project of Jiangsu Province; and Zhao’s research was supported in part by the NSERC of Canada.
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Bai, Z., Peng, R. & Zhao, XQ. A reaction–diffusion malaria model with seasonality and incubation period. J. Math. Biol. 77, 201–228 (2018). https://doi.org/10.1007/s00285-017-1193-7
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DOI: https://doi.org/10.1007/s00285-017-1193-7
Keywords
- Vector-bias malaria model
- Seasonality
- Incubation period
- Basic reproduction number
- Threshold dynamics
- Periodic solution