Control strategies in the spatial population dynamics of Aedes aegypti vector using sterile mosquitoes and insecticides

Abstract

In this work, we analyze the population dynamics of the Aedes aegypti mosquito, a transmitter of various viruses such as dengue, zika, and chikungunya, in a given area, based on the use of various control techniques. To do this, we use a reaction-diffusion model that considers various environmental characteristics such as temperature and landscape shape. Initially, we do this analysis using larvicides, insecticides, and the SIT (sterile insect release) technique separately. We simulate different control scenarios using appropriate numerical methods, test combinations of these techniques, and determine the efficiency of each strategy according to the overall reduction in the number of fertilized females due to the applied technique. Subsequently, through a cost-effectiveness analysis, we verified that the release of sterile mosquitoes at the beginning of each seasonal period is the best strategy to control the population of Aedes aegypti.

Optimal Control of a Two-Patch Dengue Epidemic under Limited Resources

“…This local company (URL: https://www.sanicontrol.com/ (accessed on 12 August 2023)) is usually contracted by the local healthcare authorities to implement the corrective vector control measures in Cali and neighboring towns when an outbreak of the disease is detected. This company usually employs low-lethality insecticides bearing residual effects of about one day to comply with the local ambiental norms and provides price quoting per area [35]. Namely, the space spraying outside the houses and other buildings on a street-by-street basis of 1 km 2 of urban area costs around US$297-303 (depending on the variable exchange rate) when using an insecticide with a 40% lethality (meaning that η = 0.4).…”