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Patients suffering from dengue fever are treated inside the Mugdha General Hospital in Dhaka, Bangladesh, on Sept. 17, 2023. Mamunur Rashid—NurPhoto/Getty Images
Dengue fever is caused by four viruses, so a person can be infected four times in their lifetime. Only about 1 in 4 people are symptomatic the first time they’re infected, according to the CDC.
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.
There have been almost 9.7 million cases in the Americas this year from dengue fever, more than in all of 2023. (AFP via Getty Images)
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]
A notable case was that of Trinidad and Tobago's first female Prime Minister, Kamla Persad-Bissessar, who was diagnosed with dengue fever in August 2011, [72] prompting investigation into the possibility of an epidemic on the twin-island republic. In 2012 the Island of Madeira experienced its first outbreak of dengue with 1080 confirmed cases.
This year, the incidence of dengue fever globally has been the highest on record, especially in Latin American countries, where more than 9.7 million dengue cases have been reported. That's twice ...
Dengue fever becomes more virulent during a second infection by means of antibody-dependent enhancement. After the first infection, macrophages display antibodies on their cell membranes specific to the dengue virus. By attaching to these antibodies, dengue viruses from a second infection are better able to infect the macrophages, thus reducing ...