Spatial Analysis for the Identification of Priority Areas Dengue in West Sumatera Province, Indonesia

Abstract

Dengue is transmitted by mosquitoes in the genus Aedes, particularly Aedes aegypti and Aedes albopictus. West Sumatra Province is a tropical area in Indonesia where the two main mosquito genera are endemic in almost all regions year-round. This study analysed distribution of dengue, and defined the priority dengue areas in West Sumatra in 2017 using spatial autocorrelation (Moran's I) and Moran's scatter plot. The result revealed the global Moran's index of the case patterns to be a cluster or positive correlation (I > 0, p < 0.01), and Moran scatter plot indicated associations between districts and their neighbours. Dengue cases in each district were described as high-high (HH), high-low (HL, hotspot), low-high (LH, cold spot), or low-low (LL). Districts identified as HH should be prioritized, and dengue must be controlled in HL and LH districts. In LL districts, dengue programs should be maintained. The results of this study could help implement strategies to prevent and control dengue.