Determination of Outbreak Prone Area by Density Figure as Basic Prevention of Dengue Hemorrhagic Fever on Endemic Area

Dengue disease transmission and death continues to occur in various regions in Indonesia. The higher the vector density, the higher the possibility of dengue outbreaks. The aim of the study was to determine Density Figure in endemic villages at Rural, Urban and Coastal Cities in Semarang and Mapping the Status of Dangerous Area of DHF in Endemic Sub-Districts in Rural, Urban and Coastal Areas in Semarang. The population was all water reservoirs in Semarang. Samples were water reservoirs inside houses in dengue-endemic villages in Semarang, which was taken by purposive sampling in the coastal areas, urban and coastal cities of Semarang. This is a cross-sectional survey research which utilized larval density to determine transmission risk status of DHF-prone areas. Data collection was done by visual inspection of larvae in each puddle/reservoir. The tools and materials used are flashlights, recording forms for larvae and note takers. The research instruments were: observation checklist, interview guide and questionnaire. Data analysis was univariable. The results showed that areas vulnarable to dengue hemorrhagic fever were located in densely populated areas and lacked environmental sanitation management, with number of density ranging from 4-6.6. Overall risk of transmission by dengue larvae density was moderate and caution is needed. Keywords— larva density, density figure, transmission level