Annual (2023) taxonomic update of RNA-directed RNA polymerase-encoding negative-sense RNA viruses (realm Riboviria: kingdom Orthornavirae: phylum Negarnaviricota)

Abstract

In April 2023, following the annual International Committee on Taxonomy of Viruses (ICTV) ratification vote on newly proposed taxa, the phylum Negarnaviricota was amended and emended. The phylum was expanded by one new family, 14 new genera, and 140 new species. Two genera and 538 species were renamed. One species was moved, and four were abolished. This article presents the updated taxonomy of Negarnaviricota as now accepted by the ICTV.

Do birds play a role in the transmission of Toscana virus? Initial isolation results from birds in northernmost Türkiye

“…In the present study, conducted in Samsun wetland in northern Türkiye, located on the Black Sea bird migration routes, we investigated the existence of several significant arboviruses in birds, particularly Orthoflavivirus, Orthonairovirus, Alphavirus CCHF is endemic in Türkiye, which has had the highest number of CCHF patients in recent years (Ergönül et al, 2006;Hekimoglu et al, 2012;Uyar et al, 2011). Although the exact involvement of birds in CCHFV is unclear, it is known that they disseminate the virus by carrying infected ticks (Briese et al, ;Estrada-Peña et al, 2007;Lindeborg et al, 2012;Palomar et al, 2013;Schmaljohann et al, 2006). CCHFV transmission by ticks carried by migratory birds between Africa and Europe has been determined both by genetic analysis and the developmental stages of the ticks on migratory birds in these regions (De Liberato et al, 2018;Leblebicioglu et al, 2014).…”

“…Toscana virus (TOSV) belongs to the species Phlebovirus toscanaense within the genus Phlebovirus, which belongs to the family Phenuiviridae (Kuhn et al, 2023). TOSV mainly manifests itself with flu-like symptoms, arthritis and neural-system symptoms (encephalitis, meningitis).…”

ICTV Virus Taxonomy Profile: Phenuiviridae 2023

“…Members of the genera Coguvirus , Mechlorovirus , Rubodvirus and Tenuivirus are transmitted by either arthropods or grafting, and infect plants associated with diseases of agricultural importance. Members of the genera Entoviru s, Laulavirus and Lentinuvirus have been found in fungi [4–6].…”

The absence of superinfection exclusion of Borna disease virus 2 maintains genomic polymorphisms in persistently infected cells

“…Viruses of the genus Orthobornavirus within the family Bornaviridae have been documented to infect a wide range of vertebrate species, including mammals and avians (1–3). Currently, the genus comprises 25 viruses belonging to 9 different viral species (4). Among these, Orthobornavirus bornaense consists of two mammalian viruses: Borna disease virus 1 (BoDV-1), the prototype of the family Bornaviridae , and BoDV-2, a genetically closely related virus to BoDV-1.…”