INTRODUCTION- Dengue is a vector-borne disease caused by the dengue virus, belonging to the genus Flavivirus and family Flaviviridae. There are four antigenically related serotypes designated as DENV-1, DENV-2, DENV-3 and DENV-4. All the four serotypes can cause clinical manifestation ranging from mild self-limiting illness to severe dengue haemorrhagic fever (DHF) and dengue shock syndrome (DSS). There is a need for constant molecular surveillance of the circulating serotypes in a geographical location due to the changing pattern of dengue serotypes