[Finny]

Mosquitoes don't create the Denque; they can only pick it up from someone who's infected.

Source, please?

[Bob]

Source, please?

Ask and ye shall receive:

How is dengue contracted?

The virus is contracted from the bite of a striped Aedes aegypti mosquito that has previously bitten an infected person.

(emphasis mine)

Excerpted from:

MedicineNet.com site