Dengue fever is a viral infection caused by dengue virus which is a mosquito-borne flavivirus.
It is transmitted by Aedes aegypti and Aedes albopictus. There are four distinct serotypes, DENV-1,2,3 and 4.
Each episode of infection induces a life-long protective immunity to the infected serotype but confers only partial and transient protection against other serotypes.
More than 100 countries in South Asia, Southeast Asia, Africa, the Eastern Mediterranean and Western Pacific suffer from dengue infection.
Antibodies will be detected in the blood (Dengue IgM) (Antibodies produced by the body's defense system to fight infection). PCR testing (virus genetic detection method) can detect dengue virus in the blood and mosquitoes are available in some laboratories. NS1 antigen: Another test that detects this virus in the early stages / fever.