1·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。
2·Following medical reports of a novel immunodeficiency syndrome in 1981, the search for a causative agent was on.
下列医疗报告一种新型免疫缺陷综合症于1981年，寻找病原体是。
3·Plasmodium is a protozoan which causes malaria; it is the causative agent of the disease.
疟原虫是引起疟疾的原生动物；是疾病的病原体。
4·The medicine produced by utilizing the invention can be very easy to come into the focal cells to achieve the purposes of treating and eliminating causative agent.
利用本发明制成的药物能够非常容易进入到病灶细胞达到治疗和消除病原体的目的。