Anisakis simplex larvae is the most important causative agent of anisakiasis.
异尖线虫病的主要致病源是简单异尖线虫幼虫。
Both Russia and Kazakhstan reported outbreaks of avian influenza in poultry in late July, and confirmed H5N1 as the causative agent in early August.
俄罗斯和哈萨克斯坦均于7月下旬报告了家禽中禽流感暴发并于8月初确认H5N1为病原体。
Following confirmation of Marburg virus as the causative agent, on 21 March, WHO sent its senior epidemiologists to Uige to assess the situation and organize an initial emergency response.
在确认马尔堡病毒为致病病原体之后，世卫组织于3月21日向威热派出其高级流行病学家以评估事态和组织初期紧急应对。
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