지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Objectives: Cryptosporidium, a protozoan parasite, has been recognized as a frequent cause of waterborne disease due to its extremely strong resistance against chlorine disinfection. Although there has as yet been no report of a Cryptosporidium outbreak through drinking water in Korea, it is important to estimate the health risk of Cryptosporidium in water supply systems because of the various infection cases in human and domestic animals and frequent detection reports on their oocysts in water environments.
Methods: This study evaluated the annual infection risk of Cryptosporidium in tap water using the quantitative microbial risk assessment technique. Exposure assessment was performed upon the results of a national survey on Cryptosporidium on the water sources of 97 large-scale water purification plants in Korea, water treatment efficacy, and daily unboiled tap water consumption. The estimates of the US Environmental Protection Agency on the mean likelihood of infection from ingesting one oocyst were applied for effect assessment.
Results: Using probabilistic methods, mean annual infection risk of Cryptosporidiosis by the intake of tap water was estimated to fall within the range of 2.3×10-4 to 1.0×10-3 (median 5.7×10-4). The risk in using river sources was predicted to be four times higher than with lake sources. With 0.5-log higher removal efficacy, the risk was estimated to be 1.8×10-4, and could then be lowered by one-third.
Conclusions: These estimations can be compared with acceptable risk and then used to determine the adequacy and priority of various drinking water quality strategies such as the establishment of new treatment technology.
목차
등록된 정보가 없습니다.
참고문헌 (23)
참고문헌 신청
Chai JY / 1996 / An epidemiological survey of Cryptosporidium parvum infection in randomly selected inhabitants of Seoul and Chollanam-do / Korean J Parasitol 34 (2) : 113 ~
Chai JY / 1998 / Two endemic foci of heterophyids and other intestinal fluke infection in southern and western coastal areas in Korea / Korean J Parasitol 36 (3) : 155 ~ 161
Craun GF / 2010 / Causes of outbreaks associated with drinking water in the United States from 1971 to 2006 / Clin Microbiol Rev 23 (3) : 507 ~ 528
Inomata A / 2006 / Contamination of raw and drinking water by protozoan parasites and an attempt on risk assessment of infection caused by drinking water consumption / Ann R
Joint FAO/WHO Codex Alimentarius Commission / 1999 / Commission. Principles and Guidelines for the Conduct of Microbiological Risk Assessment : CAC/GL-30 (1999)
Chai JY / 1998 / Two endemic foci of heterophyids and other intestinal fluke infection in southern and western coastal areas in Korea / Korean J Parasitol 36 (3) : 155 ~ 161
Craun GF / 2010 / Causes of outbreaks associated with drinking water in the United States from 1971 to 2006 / Clin Microbiol Rev 23 (3) : 507 ~ 528
Inomata A / 2006 / Contamination of raw and drinking water by protozoan parasites and an attempt on risk assessment of infection caused by drinking water consumption / Ann R
Joint FAO/WHO Codex Alimentarius Commission / 1999 / Commission. Principles and Guidelines for the Conduct of Microbiological Risk Assessment : CAC/GL-30 (1999)
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