Poisoned pork respiratory coronavirus for the production of preventive medicine against swine respiratory diseases

摘要

The present invention relates to attenuated swine respiratory coronavirus strains. More particularly, the present invention relates to swine respiratory coronavirus strains produced by attenuating a porcine respiratory coronavirus isolate in a cell in a continuous system, such as a porcine infectious gastroenteritis, a pathogenic porcine respiratory coronavirus, Other Respiratory Diseases It concerns respiratory coronavirus strains that are attenuated in advance to prevent damage by the human body.