Dengue is considered to be one of the anthropod borne human viral infections. Aedes aegypti is the vector that spreads dengue fever. In Asian region, the death of most of the children is due to the dengue hemorrhagic fever. Dengue viruses belong to Fflaviviridae family. Dengue has four serotypes such as DNEV - 1, DENV - 2, DEVN - 3, DEVN - 4 which is mapped after the antibodies produced by the body after infection.
The dengue Virus is transmitted by the mosquitoes Aedes aegypti and Aedes albopictus, which are found throughout the world. Insects that transmit disease s are called vectors. Symptoms of infection usually begin 4 - 7 days after the mosquito bite and typically last for 3 - 10 days. For transmission to occur the mosquito must feed on a person during 5 - day period when large amounts of virus es are in the blood; this period usually begins a little before the person becomes symptomatic. Some people never have significant symptoms but can still be infected by mosquitoes . After entering the mosquito the virus will require an additional 8 - 12 days of incubation period before it gets transmitted to another human. The mosquito remains infected for the remaining period of its life, which may be days or a few weeks.
Siddha system of Medicine describes all types of pyrexia under a heading Suram. It includes the vector borne diseases like malaria, dengue.
Siddha correlates dengue to Pitha Suram. Siddha literature, ‘Aga stiyar sura nool 300’ describes that the ‘Pitha suram’ can cause bleeding and it can be correlated to the hemorrhage in dengue fever. The symptoms described by the above mentioned text can also be correlated to those given in the definition of Dengue Fever .
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