Europäische Vakzinstämme des Fortplanzungs-Atmungs-Syndromsvirus des Sweins (PRRSV)

摘要

The present invention is concerned with European strains of the Porcine Reproductive Respiratory Syndrome (PRRS) virus, having as a unique feature that they are non-infectious to macrophages, and to methods for the production of such strains. The invention also provides vaccines for the protection of pigs against PRRS, based on these strains, as well as methods for the production of such vaccines.