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Dengue fever is a mosquito-borne disease caused by dengue virus, prevalent in tropical and subtropical areas. It is frequently asymptomatic ; if symptoms appear, they typically begin 3 to 14 days after infection.
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]
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 six months.
Most dengue fever patients recover in a week, but in severe cases the disease can be life-threatening and require hospitalization since it can result in shock, internal bleeding and even death.
Dengue is a viral fever spread through mosquito bites. It’s common in many tropical regions across the globe, but has recently appeared in more temperate climates. Dengue fever, once confined to ...
There have been more than twice as many cases of dengue fever across North, South and Central America — more than 9.7 million — in the first half of 2024 than there were in all of 2023, the ...
A viral hemorrhagic fever is a possible cause of the Plague of Athens during the Peloponnesian War. [13] A viral hemorrhagic fever is an alternate theory of the cause of the Black Death and the Plague of Justinian [14] The initial, and currently only, outbreak of Lujo virus in September–October 2008 left four of five patients dead. [15]
The same trends also led to the spread of different serotypes of the disease to new areas, and to the emergence of dengue hemorrhagic fever. This severe form of the disease was first reported in the Philippines in 1953; by the 1970s, it had become a major cause of child mortality and had emerged in the Pacific and the Americas. [ 6 ]