Return of Epidemic Dengue in the United States.
Introduction Dengue is transmitted by the bite of a mosquito named as Aedis aegypti. It has four serotypes. Hence, It can also be transmitted by a bite of an infected with one of the four dengue virus serotypes. Dengue is not transmitted directly from person-to-person. on this earth, approximately.
Current and Historical Conditions Indexed list of current and historical nationally notifiable conditions.
BACKGROUND. Dengue is the most common and fastest-spreading mosquito-borne virus in the world. In fact, there has been a 30-fold global increase in the incidence of dengue in the past 50 years, 6 with an estimated 50 million dengue infections now occurring each year. 7 The World Health Organization estimates that approximately two-fifths of the global population (about 2.5 billion people) live.
Dengue is present in Asia, the Pacific, the Caribbean, the Americas and Africa. Humans are infected with dengue virus through bites of tiger (Aedes) mosquitoes. There are 4 different dengue types, and infection with one type gives little immune protection against the other types. After an incubation of 8-10 days, a mild and usually self-limited.
DHAKA (Reuters) - Bangladesh is grappling with its worst outbreak of dengue fever, with hospitals packed with patients as the disease spreads rapidly in the densely-populated country.
Dengue virus 1 (DEN-1) was first discovered in Japan in the 1940s. The other three viruses, DEN-2, DEN-3, and DEN-4, are closely related to DEN-1, but are not recognized as the same virus by.
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. Five serotypes of the virus have been found, all of which can cause the full spectrum of disease. Nevertheless, scientists' understanding of dengue virus may be simplistic, as rather than distinct antigenic groups, a continuum appears to exist.
Modern genetic engineering techniques have enabled creation of chimeric viruses, which contain genetic information from and display biological properties of different parent viruses. A NIAID-developed live-attenuated chimeric vaccine consisting of a dengue virus backbone with Zika virus surface proteins is undergoing early-stage testing in humans.
The virus circulates in the blood of an infected person for 2 to 7 days, at approximately the same time that the person develops a fever. Patients who are already infected with the dengue virus can transmit the infection via Aedes mosquitoes after the first symptoms appear which normally occur within 4 to 5 days to maximum 12 days.
A near-atomic level map of Zika virus shows its structure to be largely similar to that of dengue virus and other flaviviruses, but with a notable difference in one key surface protein, report scientists funded by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health.
Dengue is the most common mosquito-transmitted viral infectious disease. A 2016 study estimated nearly 60 million symptomatic dengue cases worldwide every year (estimates including asymptomatic cases are at least six times higher), resulting in about 10 000 deaths. 4 billion people are at-risk in 128 countries where aedes mosquito vectors are present. Efforts to develop a vaccine against.
Dengue Virus Profile. The Dengue virus is a member of the virus family Flaviviridae and is transmitted to people through the bite of the mosquitos Aedes aegypti and Aedes albopictus. Dengue virus is now believed to be the most common arthropod-borne disease in the world. Dengue is mainly found in the tropics because the mosquitoes require a.
Infection with one serotype predisposes individuals to DHF when subsequently infected with a different serotype. DHF now occurs regularly in countries that previously reported only DF because of the introduction and circulation of multiple dengue virus serotypes. Without proper treatment, DHF case fatality rates can exceed 20%. With supportive.
