Preliminary evaluation of the "Dengue-MI" technology for Aedes aegypti monitoring and control

Abstract

Limitations in the laboratory identification of Aedes aegypti and processing of field data, based on larval surveys led to the development of the "Intelligent Dengue Monitoring" technology (Mi-Dengue). Mi-Dengue consists of a. trap that captures gravid female Ae. aegypti, coupled with a computerized system for field data collection, transmission, and access to georeferenced maps in real time. The current study describe the first experience with a system for monitoring adult Ae. aegypti and presents the preliminary results in three municipalities that adopted MI-Dengue as a strategy to identify key areas and orient control measures. Weekly georeferenced maps and an entomological indicator (Mean Female Aedes Index) provided information on infested areas and infestation levels, color-coded according to the number of captured female Ae. aegypti, and indicated risk-free, dengue alert, and critical situations that triggered appropriate control measures. The preliminary results suggest that the adoption of this control strategy with house-to-house visits in a 200m radius of the positive trap helped reduce dengue in the municipalities that adopted the system.