| Literature DB >> 4265548 |
A L Fernelius, W C Amtower, G Lambert, A W McClurkin, P J Matthews.
Abstract
A noncytopathogenic field strain of bovine viral diarrhea virus (BVDV) was isolated from an Iowa farm brood sow and from her hysterectomy-derived, colostrum-deprived (HDCD) piglets. This field isolant was fully virulent for a neonatal calf. The NADL strain of BVDV was passaged through a series of HDCD piglets with no resultant loss of virulence for neonatal calves. Most of the BVD viral isolants recovered from pigs had been changed from a cytopathogenic biotype to a noncytopathogenic biotype. Circumstantial evidence points to swine as "carrier" hosts of BVDV.Entities:
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Year: 1973 PMID: 4265548 PMCID: PMC1319716
Source DB: PubMed Journal: Can J Comp Med ISSN: 0008-4050