Patent 7722878 was granted and assigned to Boehringer Ingelheim on May, 2010 by the United States Patent and Trademark Office.
Vaccines effective against PRRSV include at least one portion of PRRSV ORF1. Such vaccines, upon administration, provoke an immune response in PRRSV-susceptible animals. Moreover, compositions in accordance with the present invention provide immune response up to and including protective immunity against PRRSV as well as reduce the severity of PRRSV and/or incidence of PRRSV. Selected portions of ORF1 can be used singularly, in combination with one another, in combination with other PRRSV ORFs, and in combination with other PRRSV vaccines.