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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]
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.
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 ...
Dengue fever, Japanese encephalitis, other hemorrhagic fevers: Regional arbovirus infections: California serogroup virus, Eastern equine encephalitis virus, Powassan virus, St. Louis encephalitis virus, Western equine encephalitis virus: Varicella voster infection- chickenpox, shingles, and unspecified Chickenpox: Chickenpox (regional)
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 ...
[5] [8] Shock (dengue shock syndrome) and hemorrhage (dengue hemorrhagic fever) occur in less than 5% of all cases of dengue, [5] however those who have previously been infected with other serotypes of dengue virus ("secondary infection") are at an increased risk.
The latest CDC alert advises health care providers to have increased suspicion of dengue among people with fever, especially if they have recently been in areas with frequent dengue transmission.
Graph of when laboratory tests for dengue fever become positive. Day zero refers to the start of symptoms, 1st refers to in those with a primary infection, and 2nd refers to in those with a secondary infection. [17] The diagnosis of dengue fever may be confirmed by microbiological laboratory testing.