Friday, 23 September 2016

What is Dengue?

Dengue is a vector-borne disease, which is caused by the bite of mosquitoes. Dengue is spread by several species of mosquito of the Aedes type, principally A. aegypti. The virus has five different types; infection with one type usually gives lifelong immunity to that type, but only short-term immunity to the others. Subsequent infection with a different type increases the risk of severe complications. A number of tests are available to confirm the diagnosis including detecting antibodies to the virus or its RNA.

An estimated 390 million dengue infections occur worldwide each year, with about 96 million resulting in illness. Most cases occur in tropical areas of the world, with the greatest risk occurring in:
  • The Indian subcontinent
  • Southeast Asia
  • Southern China
  • Taiwan
  • The Pacific Islands
  • The Caribbean (except Cuba and the Cayman Islands)
  • Mexico
  • Africa
  • Central and South America (except Chile, Paraguay, and Argentina)
Symptoms, which usually begin four to six days after infection and last for up to 10 days, may include sudden high fever, severe headaches,  fatigue, nausea, vomiting and muscle pain.


There is no specific medicine to treat dengue infection. You should rest, drink plenty of fluids, and see your doctor at the earliest.

There is no vaccine to prevent dengue fever. The best way to prevent the disease is to prevent bites by infected mosquitoes

More in depth information is available as World Healt Organization site : http://www.who.int/topics/dengue/en/ 

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