Of all the vector borne diseases, dengue fever is the most rampant arboviral disease that has recently spread across all over the world. Dengue virus is spread primarily by female mosquitos of the Aedes aegypti and, to a lesser extent, Aedes albopictus species. Chikungunya, yellow fever, and Zika viruses are also transmitted by these mosquitos. The disease is caused by one of four virus serotypes (DEN-1, DEN-2, DEN-3, and DEN-4) of the genus Flavivirus and it is possible to be infected four times (World Health Organization, 2009). A fifth serotype of the dengue virus was found in Malaysia in 2013 (Normile, 2013). The majority of dengue cases are asymptomatic or exhibit only minor symptoms, but it can also induce a serious, influenza-like sickness that affects newborns, young children, and adults alike. Severe dengue is a potentially fatal complication, due to plasma leaking, fluid accumulation, respiratory distress, severe bleeding, or organ impairment. According to WHO (World Health Organization), the disease is now endemic in more than 100 countries in the WHO regions of Africa, the Americas, the Eastern Mediterranean, South-East Asia and the Western Pacific. The Americas, South-East Asia and Western Pacific regions are the most seriously affected, with Asia representing ~70% of the global burden of disease. Dengue fever is common throughout the tropics, spreading rapidly in urban poor areas, suburbs and rural areas with local variations in risk influenced by climate, social, and environmental factors.
Web based survey coupled with GIS (Geographic Information System) technologies provide effective monitoring, surveillance, and risk mapping in health studies, particularly for vector-borne diseases. GIS can be used to investigate environmental variables that may be connected to risk of human transmission and habitats for disease-vectors. For better monitoring and evaluation, it is essential to know the spatial distribution and other related information of the dengue affected households. Geographic Information System (GIS) based dengue fever incidence mapping can act as a determining tool to achieve this objective as it can collect the co-ordinate information of each and every affected household along with required non-spatial data and photograph. Our aim and objective is to provide a transparent, logical and digitally supporting system at all tier of government systems like panchayat authorities, block authorities, sub-division authorities, district authorities, state authorities in regard to outbreak of Dengue or any such epidemic diseases. WebGIS with its manifold advantages of ease of use, support for unified updates, integration of MIS information along with Map View, report generation, different types of chart preparation facilities based on specific queries etc. helps the authorities to understand the dimension and the magnitude of the crisis prone areas and to take appropriate preventive measures.