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Global stabilizing feedback law for a problem of biological control of mosquito-borne diseases

Abstract : The control of the spread of dengue fever by introduction of the intracellular parasitic bacterium Wolbachia in populations of the vector Aedes aegypti, is presently one of the most promising tools for eliminating dengue, in the absence of an efficient vaccine. The success of this operation requires locally careful planning to determine the adequate number of mosquitoes carrying the Wolbachia parasite that need to be introduced into the natural population. The latter are expected to eventually replace the Wolbachia-free population and guarantee permanent protection against the transmission of dengue to human. In this paper, we propose and analyze a model describing the fundamental aspects of the competition between mosquitoes carrying Wolbachia and mosquitoes free of the parasite. We then introduce a simple feedback control law to synthesize an introduction protocol, and prove that the population is guaranteed to converge to a stable equilibrium where the totality of mosquitoes carry Wolbachia. The techniques are based on the theory of monotone control systems, as developed after Angeli and Sontag. Due to bistability, the considered input-output system has multivalued static characteristics, but the existing results are unable to prove almost-global stabilization, and ad hoc analysis has to be conducted.
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  • HAL Id : hal-01261162, version 1

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Pierre-Alexandre Bliman, Maria Soledad Aronna, Flávio Coelho, Moacyr da Silva. Global stabilizing feedback law for a problem of biological control of mosquito-borne diseases. 54th IEEE Conference on Decision and Control, Dec 2015, Osaka, Japan. ⟨hal-01261162⟩

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