Persistent Infection of Cattle with BVD Virus
Recent Findings on Origin, Prevalence and Relationship to Disease
DOI:
https://doi.org/10.21423/aabppro19847269Keywords:
BVD virus, mucosal disease, noncytopathic BYD viruse, cytopathic BYD viruseAbstract
The results of laboratory and field investigations indicate a link between persistent infection with BYD virus and mucosal disease. Both noncytopathic and cytopathic BYD viruses have been isolated from field cases of mucosal disease and mucosal disease has been experimentally produced in cattle persistently infected with noncytopathic BYD virus by superinfection with cytopathic BYD virus. The prevalence of persistent BYD virus infection is unknown but is probably high enough to be of concern. The persistently infected cow is a source of infection for other cattle, passes the persistent infection on to her offspring, and is at risk of developing mucosal disease.
