Robust control strategy by the Sterile Insect Technique for reducing epidemiological risk in presence of vector migration

Bliman Pierre-Alexandre, Dumont Yves. 2022. Robust control strategy by the Sterile Insect Technique for reducing epidemiological risk in presence of vector migration. Mathematical Biosciences, 350:108856, 23 p.

https://doi.org/10.1016/j.mbs.2022.108856

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Résumé : The Sterile Insect Technique (SIT) is a promising technique to control mosquitoes, vectors of diseases, like dengue, chikungunya or Zika. However, its application in the field is not easy, and its success hinges upon several constraints, one of them being that the treated area must be sufficiently isolated to limit migration or re-invasion by mosquitoes from the outside. In this manuscript we study the impact of males and (fertile) females migration on SIT. We show that a critical release rate for sterile males exists for every migration level, in the context of continuous or periodic releases. In particular, when (fertile) females migration is sufficiently low, then SIT can be conducted successfully using either open-loop control or closed-loop control (or a combination of both methods) when regular measurements of the wild population are completed. Numerical simulations to illustrate our theoretical results are presented and discussed. Finally, we derive a threshold value for the females migration rate, when viruses are circulating, under which it is possible to lower the epidemiological risk in the treated area, according to the size of the human population.

Mots-clés Agrovoc : méthode de lutte, vecteur de maladie, épidémiologie, lâcher d'insectes stériles, organisme nuisible migrateur, migration animale, modèle de simulation

Mots-clés libres : Sterile Insect Technique, Vector control, Ordinary differential equation, Impulsive differential equation, Mathematical epidemiology, Qualitative analysis, Open-loop control, Closed-loop control, Migration rate

Classification Agris : L72 - Organismes nuisibles des animaux
U10 - Informatique, mathématiques et statistiques

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

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