Causative Agent
4 serotype of the dengue virus (1,2,3 and 4 Group B Arbovirus)
the 4 viruses are antigenically close to each other however, they only give partial cross protection after being infected by any of them
Aedes Aegypti
Bite of the Female Aedes Aegypti (day biting, low flying, breeds in stagnant water, in urban areas). Why female? It is because that they use the blood obtained for laying of eggs. It is the primary vector for the transmission of dengue.
Sources:
Infected Persons – virus is present in the blood of patients during the acute phase of the disease and will become a reservoir of the virus
Standing water will serve as a breeding place for the mosquitoes
Mode of transmission
By the bit of an infective Aedes Aegypti mosquito