Overview An ARBOvirus is an ARthropd BOrne virus transmitted by arthropods such as mosquitoes, fleas, and ticks Examples include flaviviruses yellow fever dengue fever West Nile virus St. Louis encephalitis Zika virus togaviruses Western equine encephalitis virus Eastern equine encephalitis virus chikungunya virus bunyaviruses California encephalitis virus Crimean-Congo hemorrhagic fever Rift Valley fever Vectors Ixodes tick Borrelia burgdorferi Babesia Ehrlichia Dermacentor tick (dog tick) Francisella tularensis Louse Rickettsia prowazekii Mite Orientia tsutsugumushi Aedes genus mosquitos Zika virus yellow fever chikungunya dengue fever