Bahk Young Yil, Cho Pyo Yun, Ahn Sung Kyu, Park Sangjung, Jheong Won Hwa, Park Yun-Kyu, Shin Ho-Joon, Lee Sang-Seob, Rhee Okjae, Kim Tong-Soo
Department of Biotechnology, College of Biomedical and Health Sciences, Konkuk University, Chungju 27478, Korea.
Protist Resources Research Division, Nakdonggang National Institute of Biological Resources Sciences, Sangju 37242, Korea.
Korean J Parasitol. 2018 Apr;56(2):205-210. doi: 10.3347/kjp.2018.56.2.205. Epub 2018 Apr 30.
Waterborne parasitic protozoa, particularly and spp., are common causes of diarrhea and gastroenteritis worldwide. The most frequently identified source of infestation is water, and exposure involves either drinking water or recreation in swimming pools or natural bodies of water. In practice, studies on oocysts and cysts in surface water are challenging owing to the low concentrations of these microorganisms because of dilution. In this study, a 3-year monitoring of , and was conducted from August 2014 to June 2016 at 5 surface water sites including 2 lakes, 1 river, and 2 water intake plants. A total of 50 water samples of 40 L were examined. oocysts were detected in 22% of samples and cysts in 32%. Water at the 5 sampling sites was all contaminated with oocysts (0-36/L), cysts (0-39/L), or both. The geometric mean concentrations of and were 1.14 oocysts/L and 4.62 cysts/L, respectively. Thus, effective monitoring plans must take into account the spatial and temporal parameters of contamination because they affect the prevalence and distribution of these protozoan cysts in local water resources.
水源性寄生原生动物，尤其是隐孢子虫属和贾第虫属，是全球腹泻和肠胃炎的常见病因。最常见的感染源是水，接触途径包括饮用水或在游泳池或天然水体中进行娱乐活动。实际上，由于这些微生物因稀释而浓度较低，对地表水中的隐孢子虫卵囊和贾第虫包囊进行研究具有挑战性。在本研究中，于2014年8月至2016年6月对包括2个湖泊、1条河流和2个取水厂在内的5个地表水站点进行了为期3年的隐孢子虫、贾第虫和结肠小袋纤毛虫监测。共检测了50份40升的水样。22%的样本中检测到隐孢子虫卵囊，32%的样本中检测到贾第虫包囊。5个采样点的水均被隐孢子虫卵囊（0 - 36个/升）、贾第虫包囊（0 - 39个/升）或两者污染。隐孢子虫和贾第虫的几何平均浓度分别为1.14个卵囊/升和4.62个包囊/升。因此，有效的监测计划必须考虑污染的空间和时间参数，因为它们会影响这些原生动物包囊在当地水资源中的流行率和分布。
