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Ensuring successful introduction of Wolbachia in natural populations of Aedes aegypti by means of feedback control

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Ensuring_successful_introduction_of_Wolbachia_in_natural.pdf (2.885Mb)
Date
2015-03-19
Author
Bliman, Pierre-Alexandre
Aronna, Maria Soledad
Coelho, Flávio Codeço
Silva, Moacyr Alvim Horta Barbosa da
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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 individuals carrying the wolbachia parasite that need to be introduced into the natural population. The introduced mosquitoes are expected to eventually replace the Wolbachia-free population and guarantee permanent protection against the transmission of dengue to human. In this study, 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 use feedback control techniques to devise an introduction protocol which is proved to guarantee that the population converges to a stable equilibrium where the totality of mosquitoes carry Wolbachia.
URI
http://hdl.handle.net/10438/18169
Collections
  • Rede de Pesquisa - Working Papers [54]
  • RP / PPA - Working Paper [2]
Knowledge Areas
Saúde
Subject
Arboviroses
Dengue
Aedes aegypti
Chikungunya
Wolbachia
Keyword
Wolbachia
Global stabilization
Monotone systems
Input-output characteristic

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