kestaga 20-tahuline üheahelaline RNA-viirus, kestaga ikosaeedriline üheahelaline RNA-viirus, verdimevate putukate vahendusel leviv viirus, any of a large group of RNA viruses (formerly group B arboviruses) belonging to the genus flavivirus, family Togaviridae, any of a group of RNA viruses, mostly having arthropod vectors, which cause a number of serious human diseases including yellow fever, dengue, various types of encephalitis, and hepatitis C