Patent ID: 7335473

Claim:
A method of producing an immunogenic composition, the method comprising: introducing a purified preparation containing a polynucleotide encoding at least one polypeptide encoded by one or more open reading frames (ORFs) of ORFs 1-7 of a mystery swine disease virus, wherein the mystery swine disease virus is the isolate Lelystad Agent (CDI-NL-2.91) deposited Jun. 5, 1991 with the Institut Pasteur, Collection Nationale de Cultures De Microorganismes (C.N.C.M.) 25, rue du Docteur Roux, 75724--Paris Cedex 15, France, deposit number I-1102, into a suitable host cell; culturing said suitable host cell; and isolating one of the following therefrom: a suitable host cell containing said polypeptide; virus; viral protein; viral polynucleic acid; or mixtures thereof.