Flavivirus

virus genus

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Last updated

July 19, 2026

Quick Summary

Flaviviruses are a genus of viruses within the family Flaviviridae. These viruses have enveloped, spherical particles (virions) measuring 40 to 60 nanometers in diameter. Their genetic material is a single strand of positive-sense RNA.1

The family Flaviviridae includes three genera: Flavivirus, Hepacivirus, and Pestivirus. Flaviviruses are typically transmitted by insects or arachnids and are responsible for significant human diseases such as yellow fever, dengue fever, tick-borne encephalitis, and Japanese B encephalitis. Notable examples include the Yellow fever virus, Hepatitis C virus, and West Nile virus.12

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flavivirus
Flaviviridae contains three genera: Flavivirus, Hepacivirus, and Pestivirus. Species of Flaviviridae are transmitted by either insects or arachnids and cause severe diseases such as yellow fever, dengue, tick-borne encephalitis, and Japanese B encephalitis.
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Flaviviridae contains three genera: Flavivirus, Hepacivirus, and Pestivirus. Species of Flaviviridae are transmitted by either insects or arachnids and cause severe diseases such as yellow fever, dengue, tick-borne encephalitis, and Japanese B encephalitis.
Read More