Abstract
The important viral hemorrhagic fevers (VHF) in India spread by an arthropod vectors are Dengue fever/Dengue haemorrhagic fever and Kyasanur forest disease. Another VHF is caused by Hanta virus infection and for this there is no known vector. The diagnosis of VHF is based on typical clinical presentation and thereafter confirmed by detection of either virus or viral RNA or by demonstration of a rise of antibody titres against it. Treatment is by and large symptomatic as there are no specific drugs available against the viruses. Dengue fever has acquired epidemic magnitude in certain parts of India and has about 10% mortality. Research is going on for the development of effective vaccines against Dengue fever. The principles of primary prevention of vector borne diseases is through vector control measures, elimination of breeding sites in and around human dwellings and personal protection against vector bite.
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