Dengue Fever (cont.)
IN THIS ARTICLE
Causes of Dengue Fever
Four closely related viruses cause dengue fever. The viruses are transmitted from Aedes aegypti and Aedes albopictus mosquitoes to humans in a viral cycle that requires both humans and these mosquitoes. There is no human-to-human dengue fever transmission. Once a mosquito is infected, it remains infected for its life span. A human can infect mosquitoes when the human has a high number of viruses in the blood (right before symptoms develop). The viruses belong to the Flaviviridae family and have an RNA strand as its genetic makeup. Virologists term them dengue virus types 1-4 (DENV 1-4). All four serotypes are closely related. However, there are enough antigenic differences between them that if a person becomes immune to one serotype, the person can still be infected by the other three serotypes.
Medically Reviewed by a Doctor on 7/25/2014
Must Read Articles Related to Dengue Fever
Patient Comments & Reviews
The eMedicineHealth doctors ask about Dengue Fever:
Dengue Fever - Treatment
What was the treatment for your dengue fever?
Dengue Fever - Diagnosis
How was your dengue fever diagnosed?
Dengue Fever - Symptoms and Signs
What were the symptoms of your dengue fever?