Porcine Reproductive and Respiratory Syndrome Isolates and Methods of Use
AssigneeBoehringer Ingelheim Vetmedica GmbH
InventorsMichael Roof, Eric Vaughn, Wesley Johnson
Life of this patent
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Abstract
A method of predicting the virulence of a new or uncharacterized PRRS virus strain is provided wherein the strain is injected into swine and allowed to replicate for a period of from about 3-15 days. During this period, the rate of virus growth and/or the magnitude of viremia is determined, and this data is compared with a corresponding growth rate and/or viremia magnitude of a PRRS virus strain of known virulence, as a measure of the virulence of the new or uncharacterized strain.
Claims6
1-12. (canceled)
A Porcine reproductive and respiratory syndrome (PRRS) virus isolate Abst-1 deposited under ATCC No. PTA-6320.
An immunogenic composition comprising an attenuated porcine reproductive and respiratory syndrome (PRRS) virus isolate and a pharmacologically compatible carrier, said attenuated isolate being Abst-1 (ATCC No. PTA-6320).
The immunogenic composition of claim 17 which is a modified live vaccine.
A Porcine reproductive and respiratory syndrome (PRRS) virus isolate SDSU 73 deposited under ATCC No. PTA-6322.
Dependencies are inferred from the claim text.