Distribution Pattern Of Dengue Fever Cases Based On The Distribution Of Aedes Aegypti With Wolbachia In Bontang City In 2023–2024

Abstract

This study aims to analyze the spatial distribution of dengue incidence and the implementation of the Aedes aegypti Wolbachia program in Bontang City. A descriptive ecological design with a spatial analysis approach was used, utilizing secondary data from the Bontang City Health Office during 2023–2024. Prior to the intervention, high incidence rates (IR) were observed in several sub-districts, particularly Gunung Telihan, Bontang Lestari, Berbas Pantai, and Kanaan, indicating active transmission hotspots. During the early phase of the program, IR remained fluctuating, with increases observed in areas such as Berbas Tengah and Gunung Telihan. However, in subsequent periods, a general decline in IR was identified in several high-risk areas, including Gunung Telihan and Kanaan. The distribution of Wolbachia-infected mosquitoes showed a gradual increase over time, especially in sub-districts such as Belimbing, Kanaan, and Tanjung Laut, although fluctuations were still observed in some locations. Overall, the findings suggest that the Wolbachia program contributed to reducing dengue transmission, despite variations in its spatial distribution across sub-districts.