Unmanned Aerial Vehicle Surveillance of Rooftop Aedes Breeding Sites Before Dengue Season — Dongguan City, Guangdong Province, China, 2024–2025

What is already known about this topic? Aedes mosquitoes commonly breed in domestic water-holding containers; however, rooftop environments are difficult to access and are often absent from routine surveillance, especially in densely populated urban settings. What is added by this report? This study demonstrated that unmanned aerial vehicles (UAVs) can rapidly and reliably identify rooftop water-holding containers, reduce on-site inspection workload by 67.7%, and provide early indications of seasonal changes in Aedes larval activity. UAV-detected containers were closely aligned with ground-verified entomological indices. What are the implications for public health practice? Integrating UAV-assisted surveillance into routine vector control programs could strengthen early detection of Aedes breeding sites, improve operational efficiency, and support targeted dengue prevention efforts in urban communities.