How does someone have the dengue virus in their blood if they not been bitten by Aedes mosquito?

It is impossible for someone to have the dengue virus in their blood if they haven't been bitten by an Aedes mosquito. The dengue virus is transmitted exclusively through the bites of female Aedes mosquitoes. When an infected mosquito bites a person, the virus enters the person's bloodstream and causes the symptoms of dengue fever.