46 - Protecting Indoor Spaces: Screens and Spatial Repellents in Southern Puerto Rico

Abstract: Puerto Rico has long faced challenges in controlling Aedes aegypti, the primary vector of dengue, chikungunya, and Zika. Traditional vector control methods often fail due to insecticide resistance and the mosquito's behavior, particularly its tendency to spend a large proportion of its time indoors. The Puerto Rico Vector Control Unit (PRVCU) has implemented a home-centric strategy to mitigate these challenges, focusing on the integration of door and window screens, and spatial repellents.

Through the “SiScreen” project, the PRVCU, in collaboration with the Ponce Health Science University (PHSU) and other local partners, is installing screens in homes and evaluating the entomological and epidemiological impact using a randomized cluster design in Ponce, PR. Early results show a significant reduction in Ae. aegypti populations in homes with screens compared to control homes, alongside increased acceptance of interventions due to improved access to affordable and trustworthy screening services.

Preliminary findings suggest that integrating screens and spatial repellents offers promising results in reducing mosquito populations and the risk of arbovirus transmission. This multi-faceted approach underscores the potential of home-centric strategies to enhance vector control efforts and improve public health outcomes in Puerto Rico.