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Epidemic dengue has become more common since the 1980s. By the late 1990s, dengue was the most important mosquito-borne disease affecting humans after malaria, with around 40 million cases of dengue fever and several hundred thousand cases of dengue hemorrhagic fever each year. Significant outbreaks of dengue fever tend to occur every five or ...
[52] [53] Dengue fever is spread by the bite of the female mosquito known as Aedes aegypti. The female mosquito is a highly effective vector of this disease. [54] The evidence for the spread of dengue fever is that climate change is altering the geographic range and seasonality of the mosquito that can carry dengue.
The mosquito Aedes aegypti feeding on a human host. Dengue virus is most frequently transmitted by the bite of mosquitos in the Aedes genus, particularly A. aegypti. [32] They prefer to feed at dusk and dawn, [33] but they may bite and thus spread infection at any time of day. [34]
Dengue virus (DENV) is the cause of dengue fever.It is a mosquito-borne, single positive-stranded RNA virus of the family Flaviviridae; genus Flavivirus. [1] [2] Four serotypes of the virus have been found, and a reported fifth has yet to be confirmed, [3] [4] [5] all of which can cause the full spectrum of disease. [1]
Dengue fever is caused by infection through viruses of the family Flaviviridae. The illness is most commonly transmitted by Aedes aegypti mosquitoes in tropical and subtropical regions. [54] Dengue virus has four different serotypes, each of which are antigenically related but have limited cross-immunity to reinfection. [55]
PHOTO: The Aedes mosquito is a known vector for several viruses, including West Nile virus, yellow fever virus, dengue virus, chikungunya virus, and Zika virus. (NurPhoto via Getty Images, FILE)
In a small proportion of cases, the disease develops into the life-threatening dengue hemorrhagic fever, resulting in bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs. [2] Dengue is spread by several species of mosquito of the Aedes type, principally A ...
An Orange County Mosquito and Vector Control District worker begins the screening process for the presence of diseases like West Nile virus, Zika virus, Dengue fever or yellow fever at the agency ...