composition, vaccine and method for protecting a porcine animal from infection with a prrs virus, transfected host cell, method for making a genetically modified and attenuated prrs virus

摘要

COMPOSITION, VACCINE AND METHOD FOR PROTECTING A PIG ANIMAL FROM PRRS VIRUS INFECTION, TRANSFECTED HOST CELL, METHOD FOR MAKING A GENETICALLY MODIFIED AND ATHENSED PRRS VIRUS. The present invention relates to a genetically modified PRRS virus and a polynucleotide encoding it. Vaccines comprising the genetically modified virus and polynucleotides are also provided.