virulent contagious disease 中文意思是什麼
virulent contagious disease
解釋
溫疫- virulent : adj. 1. 有劇毒的，致死的，有毒害的。2. 病毒的，致病性強的；惡性的。3. 有惡意的，惡毒的。adv. -ly
- contagious : adj. 1. 傳染病的；傳染性的；會蔓延的，有感染力的。2. 為對付傳染病用的。adv. -ly ,-ness n.
- disease : n. 1. 病，疾病；【植物；植物學】病害。2. （精神等的）病態，弊病。3. （酒等的）變質；（食物等的）腐敗。4. 〈廢語〉不安。
-
Newcastle disease is a highly contagious and economically most important disease of poultry. the disease also inflicts many other avian species. the disease varies in degree of severity ranging from mild, inapparent infecion to severe disease. based on the severity of the disease in chickens, the causative agent of the disease, newcastle disease virus ( ndv ), is divided into three pathotypes : ( 1 ) the lentogenic strains, which cause mild inapparent infection ; ( 2 ) the mesogenic strains, which cause mild respiratory symptoms with low mortality ; ( 3 ) the velogenic strain, which are highly virulent and cause high mortality
新城疫（ newcastledisease ， nd ）是由新城疫病毒（ newcastlediseasevirus ， ndv ）引起的侵害禽類的急性高度接觸性傳染病，是家禽傳染性疾病中危害最嚴害的疫病之一，由於對世界養禽業危害極大，故被國際獸疫局確定為類傳染病。在傳染性疾病的預防中，疫苗是減少易感人群而被最廣泛採用和最有效的途徑。
分享友人