Flaviviridae

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Fla·vi·vi·ri·dae

(flā'vī-vī'ri-dē),
A family of enveloped single-stranded positive sense RNA viruses 40-60 mm in diameter formerly classified as the "group B" arboviruses, including yellow fever and dengue viruses; maintained in nature by transmission from arthropod vectors to vertebrate hosts.

Flaviviridae

Virology A large group of small viruses that have their entire life cycle in cytoplasm, without an intermediate DNA form Examples Dengue, Omsk hemorrhagic, St Louis encephalitis, West Nile, yellow fever viruses