• A large heterogeneous group of RNA viruses divisible into groups on the basis of the virions
    They have been recovered from arthropods, bats, and rodents
    Most are borne by arthropods
    They are linked by the epidemiologic concept of transmission between vertebrate hosts by arthropod vectors (mosquitoes, ticks, sandflies, midges, etc.) that feed on blood
    They can cause mild fevers, hepatitis, hemorrhagic fever, and encephalitis (synset 101331827)

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