The aetiology and pathogenesis of DN in western medicine is poorly understood, and there is no significant breakthrough on therapy.
现代医学对DN的病因及发病机理尚未完全阐明，治疗上亦无重大突破。
The aetiology, epidemiology, pathogenesis, clinical symptom and pathological change, clinical diagnosis and vaccination control of the disease were reviewed in this article.
文章综述了近年来副猪嗜血杆菌病的病原学，流行病学，致病机理，临床症状与病理变化，临床诊断和防治等方面的研究进展。
The aetiology, epidemiology, pathogenesis, clinical symptom and pathological change, clinical diagnosis and vaccination control of the disease were reviewed in this article.
文章综述了近年来副猪嗜血杆菌病的病原学，流行病学，致病机理，临床症状与病理变化，临床诊断和防治等方面的研究进展。
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