Dengue fever (Dengue fever), is a dengue virus caused by acute infectious diseases, the virus will be transmitted to humans through mosquitoes. And according to different serotypes of virus, divided into Ⅰ, Ⅱ, Ⅲ, Ⅳ four types, and each type has the ability to infect the disease.
Patients infected with a certain type of dengue virus, it will be that type of virus with a lifetime of immunity, but for other types of dengue virus only a short degree of immunity, or may be infected with other serotypes of virus.
Recurrent infection of different types of dengue virus, can cause the host of varying degrees of response, from mild or not obvious symptoms, to fever, rash typical dengue fever, or drowsiness, restlessness, liver enlargement and other warning signs, and even Dermatitis may cause severe bleeding or severe organ damage.
The global dengue hot areas, mainly concentrated in the tropical, subtropical and other Egyptian mosquitoes and white spot mosquito distribution of the country, with the gradual development of globalization, mutual circulation and reciprocating between countries tend to frequent, since the 1980s , Dengue fever began to spread to countries, a serious public health problems. Taiwan is located in the subtropical region, like this a little hot, and a little wet environment, it is mosquitoes favorite growth environment for dengue hot high risk areas.
Taiwan's main spread of dengue fever mosquitoes are Aedes aegypti and Aedes albopictus, which are characterized by black and white spots on their feet. Which Egyptian mosquitoes on both sides of the chest with a pair of lyre as the vertical line and the middle of a pair of yellow vertical lines, like habitat in the indoor artificial containers, or man-made water caused by the place; white spotted mosquito is chest Plate in the middle, there is a white and obvious vertical lines, and prefer to live in the outdoors.
Dengue fever is a kind of "community disease", "environmental disease", and the disease mosquitoes are not selective for the bites. Once the dengue virus enters the community and the environment surrounding the disease is mosquito breeding, there is the possibility of dengue epidemic. People usually should do a good job of clearing the disease mosquito breeding work. In addition, the public should also be vigilant to understand the symptoms of dengue fever, in addition to the onset of early medical treatment, early diagnosis and appropriate treatment, should also be avoided by the sick mosquito bites to reduce the possibility of dengue virus re-transmission.
Typical dengue incubation period is about 3 to 8 days (up to 14 days).
During the period from the day before the onset of the disease to the period of 5 days after the onset of the disease, it is called the "infection period" or "viremia". If the virus is in the blood, if the infected person is bitten by the mosquito during this period This mosquito will be infected with dengue virus, the virus in the mosquito body after 8-12 days of proliferation, this mosquito mosquito has a life-long ability to infect the virus, when it bite other people, it will be the body of dengue virus To another person.
Everyone's constitution is different, some people infected with dengue fever, the symptoms are mild, or even no symptoms of illness. The typical symptoms of dengue fever are sudden high fever (≧ 38 ℃), headache, posterior eye pain, muscle pain, joint pain and rash and other phenomena; However, if the infection of different types of dengue virus, Have a higher probability of causing more serious clinical symptoms, if not timely medical treatment or treatment, the mortality rate can be as high as 20% or more, so the people must not be taken lightly! After the onset of the first 3 to 5 days, if the condition suddenly increased, such as severe pain, convulsions, coma, consciousness and blood pressure changes, should pay attention to whether the progress of dengue fever.
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