Dengue fever outbreaks have been documented on every continent except Antarctica. Dengue fever is transmitted to humans by the being of an infected mosquito.
Transmission means the virus is being passed or spread to someone else.
Dengue virus (DEN) is a small single-stranded RNA virus comprising four distinct serotypes (DEN-1 to -4).
These closely related serotypes of the dengue virus belong to the genus Flavivirus, family Flaviviridae.
There are three major illness caused by Flaviviridae: tick-borne encephalitis virus, Japanese encephalitis and dengue fever.
The various serotypes of the dengue virus are transmitted to humans through the bites of infected Aedes mosquitoes, principally Ae, aegypti.
This mosquito is a tropical and subtropical species widely distributed around the world mostly between latitudes 35 °N and 35 °S.
Dengue hemorrhagic fever is a severe often fatal, febrile disease caused by dengue viruses characterized by abnormalities of hemostasis and capillary permeability that leads, in severe cases, to a protein-losing shock syndrome.
A person can get dengue fever four times in his or her lifetime, although a person never gets the same dengue infection twice.
Dengue fever
