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The test was once part of the World Health Organization (WHO) algorithm for diagnosis of dengue fever, [3] however it is no longer used in the latest WHO guidance. [4] Studies have shown that the tourniquet test has low predictive value for dengue fever and should be used in conjunction with other tests for a reliable diagnosis. [5] [6] [7] [8]
For perspective, there have been 2,559 cases of dengue fever reported in U.S. states and territories since the start of 2024, per the CDC. A large majority of those (1,724) were reported in Puerto ...
Most people recover within a week or so. In about 5% of cases, symptoms worsen and can become life-threatening. This is called severe dengue (formerly called dengue hemorrhagic fever or dengue shock syndrome). [21] [23] Severe dengue can lead to shock, internal bleeding, organ failure and even death. [24]
When laboratory tests for dengue fever become positive where day zero is the start of symptoms, 1st refers to in those with a primary infection, and 2nd refers to in those with a secondary infection. [7] Dengue fever may be diagnosed by microbiological laboratory testing. [26]
That's twice as many as in all of 2023 (4.6 million cases), according to the CDC. Dengue fever infections have skyrocketed as many nations have reported increasingly hot temperatures, which create ...
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 ...
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]
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]