Bovine Virus Diarrhoea Virus in Semen from Acutely Infected Bulls

The occurrence of bovine virus diarrhoea/muscosal disease in Iran

Epidemiology of bovine virus diarrhoea virus.

A better understanding of the epidemiology and pathogenesis of bovine virus diarrhoea virus (BVDV) has emerged in recent years. Fetal infections and in particular those resulting in birth of persistently infected calves are of central importance for the epidemiology of BVDV. A prevalence of persistently infected, viraemic animals of about 1% is found in Denmark and elsewhere by examination of r...

Control of bovine virus diarrhoea virus.

Bovine virus diarrhoea (BVD) virus is ubiquitous in cattle populations throughout the world. Strategies for controlling BVD virus infections are continually evolving. Current control procedures are based on identification and elimination of persistently infected cattle, which are a primary source of virus for non-infected cattle, and immunisation with killed or modified live virus vaccines. Add...

Electron microscopy of bovine virus diarrhoea virus.

Bovine virus diarrhoea virus (BVDV) has been (tentatively) identified by electron microscopy in purified virus preparations, in infected cell cultures and in tissues and cells from infected animals. These studies have revealed a spherical membrane-bound particle with a diameter of 40-60 nm. The membrane is smooth, bilaminar and surrounds a dense or semi-dense core of 20-25 nm. The core particle...

Bovine virus diarrhoea virus: an introduction.

In view of the recently established genome organisation of pestiviruses, their classification as members of the togavirus family is no longer tenable. They should rather be provisionally considered as a new genus of the Flaviviridae, irrespective of differences in the nonstructural genes. Like other positive-stranded RNA viruses, pestiviruses are highly variable; apart from point mutations, rec...