Dengue virus 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. All of the viruses are harmful. Which can cause the full spectrum of diseases. Dengue (pronounced dengue) fever is a painful, debilitating mosquito-borne disease caused by any one of four closely related dengue […]