Dengue, the commonest arbovirus infection worldwide, has become a serious public health concern. As of today the geographic distribution of dengue has crossed more than 100 countries worldwide. The World Health Organisation has estimated that more than 2.5 billion people are at risk of dengue infection.

Dengue is a mosquito borne viral disease mostly reported in tropical or subtropical areas. In the context of Nepal, the dengue incidence has increased rapidly in recent years due to expansion of vectors (Aedes aegypti and Aedes albopictus) and Fewer cases being imported from the movement of people from the affected regions mostly of India.