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  • Title: Bovine viral diarrhea virus in swine: characteristics of virus recovered from naturally and experimentally infected swine.
    Author: Fernelius AL, Amtower WC, Lambert G, McClurkin AW, Matthews PJ.
    Journal: Can J Comp Med; 1973 Jan; 37(1):13-20. PubMed ID: 4265548.
    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.
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