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US 4,810,634 AGranted
Pseudorabies virus mutants incapable of producing glycoprotein X
AssigneeThe Upjohn Company
InventorsLeonard E. Post, Darrell R. Thomsen
Life of this patent
Estimating the term…
Abstract
Provided are a virus vaccine, comprising a properly incapacitated virus lacking an antigen of the wild-type virus which is useful for serologically distinguishing between vaccinated and infected animals, methods for distinguishing between vaccinated and infected animals and multivalent vaccines.
Claims8
A non-naturally occurring pseudorabies virus, characterized in that upon replication it produces no glycoprotein X (gX) as a result of the viral DNA being altered or deleted.
Dependencies are inferred from the claim text.