Dengue infections are among the most frequent causes of febrile disease in tropical climates. Infections are caused by a flavivirus transmitted by the Aedes mosquito. Aedes aegypti mosquitos are the main transmitters of Dengue viruses.
Minus Related Pages. What is Dengue? Areas with Risk of Dengue Dengue outbreaks are occurring in many countries of the world. New Dengue Vaccine A new dengue vaccine is approved for use in children aged 9 to 16 years with laboratory-confirmed previous dengue virus infection and living in areas where dengue is endemic common. New dengue vaccine.
About Dengue. Statistics and Maps. Researchers are working on dengue fever vaccines. For now, in areas where dengue fever is common, the best ways to prevent infection are to avoid being bitten by mosquitoes and to take steps to reduce the mosquito population. When symptoms do occur, they may be mistaken for other illnesses — such as the flu — and usually begin four to 10 days after you are bitten by an infected mosquito.
Dengue fever causes a high fever — F 40 C — and any of the following signs and symptoms:. Most people recover within a week or so. In some cases, symptoms worsen and can become life-threatening. This is called severe dengue, dengue hemorrhagic fever or dengue shock syndrome. Severe dengue happens when your blood vessels become damaged and leaky.
And the number of clot-forming cells platelets in your bloodstream drops. This can lead to shock, internal bleeding, organ failure and even death. Warning signs of severe dengue fever — which is a life-threatening emergency — can develop quickly. The warning signs usually begin the first day or two after your fever goes away, and may include:.
Severe dengue fever is a life-threatening medical emergency. Seek immediate medical attention if you've recently visited an area in which dengue fever is known to occur, you have had a fever and you develop any of the warning signs. Warning signs include severe stomach pain, vomiting, difficulty breathing, or blood in your nose, gums, vomit or stools. If you've been traveling recently and develop a fever and mild symptoms of dengue fever, call your doctor.
Dengue fever is caused by any one of four types of dengue viruses. However, the infection does not offer immunity to the other three types, so it is possible to contract dengue virus again. A person who has had dengue virus once is at increased risk of experiencing more severe dengue virus symptoms if they get infected again. Although rare in Australia, certain people can develop severe dengue virus infection. Babies, young children, and people who have had dengue more than once are at increased risk of this complication.
Warning signs of more severe dengue virus include the typical signs and symptoms in additional to some or all of the following:. Most people who experience these symptoms recover fully. A small number of people who experience these symptoms will go on to have severe dengue which can include:.
Cases of dengue virus occur in northern Queensland from time to time when travellers who have been infected overseas return and introduce the virus to the local mosquito population.
Dengue virus is not transmitted spread from person to person. Only infected mosquitoes transmit dengue virus. It is thought that the mosquito contracts the virus when it bites an infected person. The mosquito is then infective for the rest of its life and can spread the virus every time it bites someone. At least three different kinds of mosquito in Australia are suspected to be dengue carriers.
They are Aedes aegypti, Aedes scutellaris and Aedes katherinensis. These mosquitoes are found in northern Queensland, the Northern Territory and northern Western Australia.
They are not found in Victoria. Protect yourself against mosquito bites to avoid dengue virus and other mosquito-borne diseases in dengue-affected areas. Suggestions include:. See a doctor immediately if you think you may have dengue virus. Early diagnosis is important to reduce the risk of complications and avoid further spread of the virus.
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