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Risk Assessment of Escherichia coli Infection from Use of Interactive Waterscape Facilities
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 Title & Authors
Risk Assessment of Escherichia coli Infection from Use of Interactive Waterscape Facilities
Zo, Young-Gun;
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 Abstract
Objectives: With the goal of quantifying the risk of children contracting gastroenteritis while playing at interactive waterscape facilities and evaluating the adequacy of current water quality regulations, risk assessment was performed with Escherichia coli as pathogen. Methods: Abundances of E. coli in the waters of interactive water features in South Korea were acquired from survey reports. A gamma distribution describing the volume of water swallowed by children during swimming activities was adopted. Exposure rate and risk were calculated by Monte Carlo simulation and dose-response models for various pathogenic E. coli. Results: E. coli was detected in 25 out of 40 facilities, with range of ~1,600 CFU/100 ml. The abundance fitted an exponential distribution. Simulated exposures ranged CFU, varying greater along E. coli abundance than the volume of water. Risk of children being infected by enterohemorrhagic E. coli was high, with range of ~0.85. When E. coli abundance was <200 CFU/100 ml, which is the current government threshold, the risk decreased to <0.43. Although the guideline successfully reduced the risk of adults being infected by a less virulent E. coli strains (<0.03), the risk for children could not be quantified due to lack of dose-response models for those pathogens for children. Conclusions: Under the current guideline, children are at risk of being infected if water is contaminated with by enterohemorrhagic E. coli. For other E. coli strains, the risk appears to be considerably less. The result warrants need for developing dose-response models for children for each pathogenic E. coli strain.
 Keywords
Escherichia coli;Exposure;Interactive fountain;Risk assessment;
 Language
Korean
 Cited by
1.
도심지내 분수유형별 음이온 분포 및 상관성 분석,김정호;박승환;김원태;윤용한;

Journal of Environmental Science International, 2013. vol.22. 12, pp.1599-1610 crossref(new window)
2.
물놀이형 수경시설의 수질과 항생제 내성 대장균 분포에 관한 연구,윤상훈;김선경;김난희;위환;이세행;조광운;김동수;조영관;

한국환경보건학회지, 2014. vol.40. 3, pp.225-233 crossref(new window)
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Anion Distribution and Correlation Analysis by Fountain Type in Urban, Journal of Environmental Science International, 2013, 22, 12, 1599  crossref(new windwow)
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