Flaviviruses

Dengue virus is an old-generated fever. It is a febrile illness that affects infants, young children and adults. There is acute febrile illnesses that occur in the tropics, may be fatal and is caused by four closely related viruses. It is also known as bone break fever. It usually occurs in South Asia, East Asia, South America and Africa. Unlike malaria, dengue is also prevalent in the urban districts of its range than in rural areas. Dengue is transmitted to humans by the bite of an Aedes mosquito that feeds during the day. The Aedes mosquito, infected with a virus fourdengue. People infected with dengue can transmit the infection through mosquitoes or blood products, and only while they are still febrile. The classic dengue fever lasts about two to seven days, with a smaller peak of fever at the rear of the disease. Dengue is also known by other names, including "breakbone" or "dandy fever." Victims of dengue often have contortions due to the joint and muscle pain intensity, hence the name breakbone fever.

The symptoms of dengue
Dengue symptoms appear 3-14 days after being bitten by an infective Aedes mosquito. The most common symptoms of dengue are -

* Sudden onset of severe headache, muscle and joint pain.
* Fever
* Rash throughout the body.
* Decreased platelet count.
* Low number of white blood cells.
* Bladder Problem
* Constant Headaches
* Pain Eye
* dizziness
* Loss of appetite.

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The diagnosis of dengue
In those days the diagnosis of dengue can be accomplished by the use of test kits for rapid diagnosis, which also distinguish between primary and secondary infections with dengue. Serology and polymerase chain reaction (PCR) studies are available to confirm the diagnosis of dengue if clinically indicated. Dengue fever can be a life threatening fever.

WHO - The role of the World Health Organization in the 21st century

Cases of dengue
Dengue is a disease caused by a family of viruses that are transmitted by mosquitoes. It was mainly caused by the dengue virus (DENV), a flavivirus transmitted by mosquitoes. DENV is a single-stranded RNA virus positive-strand of the family Flaviviridae, genus Flavivirus.
Dengue (pronounced Deng-gay) strikes people with low immunity levels. Because it is caused by one of four serotypes of the virus, it is possible to getdengue mouth repeatedly. However, an attack of dengue produces lifelong immunity to that particular serotype to which the patient has been exposed.

Dengue symptoms comprehensive diagnosis and cause