Bovine Viral Diarrhea Virus

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Bovine Viral Diarrhea Virus
BVDV-CP7.JPG

Immunofluorescence image of BVDV (CP7 strain)

Systematics
Classification : Viruses
Area : Riboviria
Empire : Orthornavirae
Phylum : Kitrinoviricota
Class : Flasuviricetes
Order : Amarillovirales
Family : Flaviviridae
Genre : Pestivirus
Type : Bovine viral diarrhea virus 12
Taxonomic characteristics
Genome : (+) ss RNA
Baltimore : Group 4
Symmetry : no
Cover : available
Scientific name
Pestivirus A , B
Short name
BVDV-1 and BVDV-2
Left

The two virus species Pestivirus A (also Bovine Virus Diarrhea Virus 1 , BVDV-1 ) and Pestivirus B (also Bovine Virus Diarrhea Virus 2 , BVDV-2 ) belong to the genus Pestivirus , which only includes animal pathogens of the Flaviviridae family . The BVDV causes a dangerous diarrhea in cattle , especially calves, the bovine virus diarrhea ( mucosal disease ) . It occurs in a cell-damaging (cytopathic) and a non-cytopathic form. The two forms are based on two different genotypes that differ only in a single base pair. Genotype 1 (non-cytopathic BVDV) is much more common (Europe: 89% of the viruses detected, North America: 64%) than the more aggressive genotype 2 (cytopathic BVDV).

The BVDV is closely related to the causative agent of classical swine fever ( Pestivirus C ) and the border disease of sheep ( Pestivirus D ). It belongs to the single-stranded RNA viruses and has a round shape with a diameter of about 40 to 50 nanometers. It is already inactivated by mild disinfectants and surface-active substances (e.g. household cleaners) . Outside the host, it is inactivated after a short time in a warm environment, but in cold and damp conditions it can remain infectious for several weeks.

Web links

Individual evidence

  1. ICTV Master Species List 2018b.v2 . MSL # 34, March 2019
  2. a b c d ICTV: ICTV Taxonomy history: Yellow fever virus , EC 51, Berlin, Germany, July 2019; Email ratification March 2020 (MSL # 35)