Persistent infections and immunological aspects of BVD virus in beef cattle
DOI:
https://doi.org/10.21423/bovine-vol0no23p52-55Keywords:
cattle diseases, Diagnosis, Epidemiology, immunity, mucosal disease, Reviews, Viral diseasesAbstract
Bovine viral diarrhea (BVD) was first described in 1946 in New York dairy cattle. Bovine viral diarrhea virus (BVDV) is a common infection of cattle with serum neutralizing antibody present in 50 to 90 percent of the world population.
BVD has manifested itself in a wide variety of clinical entities. This variability has perplexed producers, veterinary practitioners and researchers for years. Recent findings associated with persistent infections have further demonstrated the complexity of the disease. An understanding of these findings is important in assessing the effects of clinical BVD. This paper summarizes for the practitioner, the current information about persistent infections and other immunological aspects of BVD.