Generalities:

Flaviviridaeis a family of viruses spread primarily by arthropod vectors (especially ticks and mosquitoes). Includes the following genres:
Genus Flavivirus: The type species is the yellow fever virus, it also includes the West Nile, Dengue virus and Zika virus. A total of 67 viruses have been identified in humans and animals.

Transmission:

It is transmitted mainly by arthropods: ticks, mosquitoes, lice, bedbugs...