新兴传染病的定义是，在过去二十年中，人类中记录的发病率有所增加，或在不久的将来有上升的危险。新出现的病毒病原体包括杯状病毒，如诺沃克病毒和其他小圆结构病毒（SRSV）。SRSV还包括人类星形病毒、冠状病毒和人类肠道腺病毒。气单胞菌、分枝杆菌和幽门螺杆菌等几个细菌属也被确定为新出现的水传播病原体。 本文描述了通过中试规模的常规混凝、絮凝、沉淀和颗粒介质过滤去除几种新出现的病原体。本文的主要目的是展示哪些新出现的病原体最难去除，以及去除新出现的病原体与浊度控制的关系。包括18个参考文献、表格、图表。

Emerging infectious diseases are defined as those whose documented incidence in humanshas increased during the past twenty years, or threatens to rise in the near future. Emerging viral pathogens include the caliciviruses such as Norwalk virus and other small round structured viruses (SRSVs). SRSVs also include the human astroviruses, coronaviruses, and the human enteric adenoviruses. Several bacterial genera such as Aeromonas, Mycobacterium, and Helicobacter have also been identified as emerging waterborne pathogens. This paper describes the removal of several emerging pathogens by pilot-scale conventionalcoagulation, flocculation, sedimentation, and granular media filtration. The primary goal of the paperis to show which emerging pathogens were the most difficult to remove and how the removal of emerging pathogens is related to turbidity control. Includes 18 references, tables, figures.