Since there has not been any vaccine to prevent dengue fever from being experienced by people yet, the only way to prevent it is to avoid the transmission of the virus to mosquitoes. To this end, patients are kept under mosquito netting until the second bout of fever is over and they are no longer contagious.
The prevention of dengue requires control or eradication of the mosquitoes carrying the virus that causes dengue. In nations that are often plagued by dengue fever, people are urged to empty stagnant water from old tires, trash cans, and flower pots because these are just some of the common places that dengue-causing mosquitoes lives. Governmental initiatives to decrease mosquitoes also help to keep the disease in check but have been poorly effective.
Another easy thing to do to prevent getting mosquito bites is to wear long pants and long sleeves. You can also make use of insect repellent sprays that contain DEET when visiting places where dengue is endemic. There are no specific risk factors for contracting dengue fever, except living in or traveling to an area where the mosquitoes and virus are endemic. Limiting exposure to mosquitoes by avoiding standing in water and staying indoors two hours after sunrise and before sunset will help. The Aedes aegypti mosquito is a daytime biter with peak periods of biting around the time of sunrise and sunset. It may bite at any time of the day and is often hidden inside homes or other dwellings, especially in urban areas.
Up to date, there is still no vaccination for preventing dengue fever from occurring. There is a vaccine undergoing clinical trials, but it is too early to tell if it will be safe or effective. Early results of the the said clinical trials show that a vaccine may be available within the year 2015.
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