How Dengue Spreads

How dengue spreads?

Dengue fever is noncontagious i.e., not an airborne infection (an infected person cannot spread the infection to other persons but can be a source of dengue virus for mosquitoes for about 6 days from the start of symptoms).

Dengue virus is transmitted to humans through mosquito bites, a specific species of mosquito usually Aedes aegypti (but frequently Aedes albopictus) which bites during morning hours. The mosquito transmits disease by biting an infected person and then biting someone else, similar to the spread of chikungunya.
The incubation period (i.e., period from infection till the manifestation of symptoms) is 4 to 6 days, but may vary with a range of 3 to 14 days.
This disease is a vector borne infection i.e., mosquito is the vector (carrier) of the virus believed to cause this fever and the vector is common both in dengue and chikungunya.