In this study, two strains of microaerophilic Gram-negative rod bacterium were isolated from the affected swine tissues like lung,trachea,tonsil.

• 本文从广东省具有上述临床症状的不同患病猪群的病灶中分离到两株革兰氏阴性细小杆菌，通过培养特性试验和生化试验初步证明该两株分离物为Hps野毒株，命名为TP株和HN株。