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Latin American Symposium II

Latin American Symposium II

156 - Assessment of indoor spatial application using the Aero System® for Aedes aegypti control and the use of ovitraps to guide intervention actions

Wednesday, March 5, 2025
2:25 PM – 2:35 PM AST
Location: 202
Abstract: Aedes aegypti, the primary vector for dengue, chikungunya, and Zika viruses, poses a significant global public health threat, particularly in Brazil (WHO, 2022). Despite the Ministry of Health's recommendations for entomological surveillance and both chemical and mechanical control measures, these strategies have shown limited effectiveness, mainly due to the low coverage of control efforts. Spatial insecticide applications, often performed in response to rising case numbers, tend to have poor penetration in indoor environments where female mosquitoes commonly rest (Lima-Camara et al., 2006; Zara et al., 2016). This study, conducted in Pará de Minas and São Domingos do Prata, MG, Brazil, compared the efficacy of the Aero System®, which applies permethrin AS indoors, with the conventional method using a backpack nebulizer. Additionally, a novel approach was assessed, which targeted spatial insecticide application based on the density of Aedes aegypti eggs, as indicated by ovitraps. These traps proved to be an effective surveillance tool, accurately identifying areas at higher risk of transmission. The Aero System® showed substantial efficacy in controlling indoor mosquito populations, complementing larval control measures and reducing vector density. The study also explored the system's acceptance by both Endemic Disease Control Agents (ACE) and local residents, yielding positive outcomes: ACEs preferred the Aero System® for its ease of operation and reduced physical strain compared to the backpack nebulizer, and 94% of residents expressed approval of the new technology.