Dengue Spatial Distribution and Environment Factor in Banjarnegara District, Central Java Province

Dengue Hemorrhagic Fever (DHF) is caused by dengue virus that is spread through the bite of the Aedes aegypti.spp mosquitoes. Banjarnegara District is a new DHF endemic area in Central Java Province. Insidence Rate in 2018 was 14/1.00.000 population. The larval free rate in Banjarnegara District was less than National rate (25%). Efforts to control dengue cases have been carried out including fogging, Sterile Insect Tecnique and larvae control. This study aimed to determine the pattern of dengue cases distribution and environmental spatial risk factors in Banjarnegara District from 2017-2019. A descriptive research using a cross sectional approach was conducted in Juli-August 2019. Spatial analysis was applied using the Geographic Information System (GIS) application with ArcView GIS devices. Cases distribution in Banjarnegara were overlaid with topographic map and population density in each sub district. According to the report of Banjarnegara Public Health Office, there were 144 DHF cases in 2017, 108 cases in 2018 and 884 cases in 2019. The spread of dengue cases were not only in urban areas but also in rural areas. More dominant cases were found in areas below 375 meters above sea level. The closest land use was the irrigated paddy field and the presence of a river flow. Most cases were distributed in areas with population densities of more than 1000-2500 people / km2. Dengue cases were more dominant in lowland areas near paddy fields and densely populated areas. Increased vector and dengue cases surveillance efforts were needed, especially at low-lying areas with community empowerment by installing ovitrap in each house.