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Risk Assessment of Escherichia coli Infection from Use of Interactive Waterscape Facilities

수경시설 물놀이에 따른 대장균 감염의 위해도 분석

  • Received : 2012.01.17
  • Accepted : 2012.02.14
  • Published : 2012.02.29

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 ${\sim}1.9{\times}10^{10}$ 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

References

  1. Ministry of Environment Korea. Study on Measures for Management of Water Quality in Waterscape Facilities: Ministry of Environment, Korea; 2010.
  2. Kim I-H, Heo H-C, Huh K-Y. Evaluating user's behavior and satisfaction on pop-jet fountain of Namgaram Park in Jinju. Journal of Korean Society for People, Plants and Environment. 2009; 12(3): 53-67.
  3. Centers for Disease Control and Prevention. Outbreak of cryptosporidiosis associated with a water sprinkler fountain--Minnesota, 1997. MMWR Morb Mortal Wkly Rep. 1998; 47(40): 856-860.
  4. Centers for Disease Control and Prevention. Outbreak of gastroenteritis associated with an interactive water fountain at a beachside park--Florida, 1999. MMWR Morb Mortal Wkly Rep. 2000; 49(25): 565-568.
  5. Centers for Disease Control and Prevention. Cryptosporidiosis outbreaks associated with recreational water use-five states, 2006. MMWR Morb Mortal Wkly Rep. 2007; 56(29): 729-732.
  6. Centers for Disease Control and Prevention. Outbreak of cryptosporidiosis associated with a splash park - Idaho, 2007. MMWR Morb Mortal Wkly Rep. 2009; 58(22): 615-618.
  7. Bancroft JE, Keifer SB, Keene WE. Shigellosis from an interactive fountain: implications for regulation. J Environ Health. 2010; 73(4): 16-20.
  8. Eisenstein L, Bodager D, Ginzl D. Outbreak of giardiasis and cryptosporidiosis associated with a neighborhood interactive water fountain--Florida, 2006. J Environ Health. 2008; 71(3): 18-22; quiz 49-50.
  9. Ministry of Environment Korea. Guideline for Management of Water Quality in Interactive Waterscape Facilities; 2010.
  10. Korean Association for Safe Communities. Press Release: 8 times more E. coli than the standard found among pop-jet fountains in children parks in Seoul; 2011.
  11. Nett RJ, Toblin R, Sheehan A, Huang WT, Baughman A, Carter K. Nonhygienic behavior, knowledge, and attitudes among interactive splash park visitors. J Environ Health. 2010; 73(4): 8-14.
  12. Delignette-Muller ML, Cornu M. Quantitative risk assessment for Escherichia coli O157:H7 in frozen ground beef patties consumed by young children in French households. Int J Food Microbiol. 2008; 128(1): 158-164. https://doi.org/10.1016/j.ijfoodmicro.2008.05.040
  13. Wade TJ, Calderon RL, Brenner KP, Sams E, Beach M, Haugland R, et al. High sensitivity of children to swimming-associated gastrointestinal illness: results using a rapid assay of recreational water quality. Epidemiology. 2008; 19(3): 375-383. https://doi.org/10.1097/EDE.0b013e318169cc87
  14. Song J-H, Chae S-C, Kang B-I, Yu D-C, Jeong S-D, Lee M-S, et al. A Survey of Water Quality of the Swimming Pool Fountains in Jeollabuk-do. Division of Water Research Jeollabukdo Institute of Health and Enviornmental Research; 2010.
  15. Lee SD. A study on predicting the range of cooling effect and the diffusion of water particles that are generated from a fountain. Journal of the Environmental Sciences. 2011; 20(7): 819-828. https://doi.org/10.5322/JES.2011.20.7.819
  16. Zhou Y, Benson JM, Irvin C, Irshad H, Cheng Y-S. Particle size distribution and inhalation dose of shower water under selected operating conditions. Inhal Toxicol. 2007; 19(4): 333-342. https://doi.org/10.1080/08958370601144241
  17. Schets FM, Schijven JF, de Roda Husman AM. Exposure assessment for swimmers in bathing waters and swimming pools. Water Res. 2011; 45(7): 2392- 2400. https://doi.org/10.1016/j.watres.2011.01.025
  18. Teunis P, Takumi K, Shinagawa K. Dose response for infection by Escherichia coli O157:H7 from outbreak data. Risk Anal. 2004; 24(2): 401-407. https://doi.org/10.1111/j.0272-4332.2004.00441.x
  19. Teunis PF, Ogden ID, Strachan NJ. Hierarchical dose response of E. coli O157:H7 from human outbreaks incorporating heterogeneity in exposure. Epidemiol Infect. 2008; 136(6): 761-770.
  20. Haas CN, Rose C, Gerba CP. Quantitative Microbial Risk Assessment. New York, N. Y.: John Wiley and Sons, Inc.; 1999.
  21. Powell MR, Ebel E, Schlosser W, Walderhaug M, Kause J. Dose-response envelope for Escherichia coli O157:H7. Quantitative Microbiol. 2000; 2(2): 141-163. https://doi.org/10.1023/A:1011557402204
  22. R Development Core Team. R: A language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing; 2011.
  23. Delignette-Muller ML, Pouillot R, Denis J-B, Dutang C. fitdistrplus: help to fit of a parametric distribution to non-censored or censored data. Vienna, Austria: R Foundation for Statistical Computing; 2010.

Cited by

  1. Anion Distribution and Correlation Analysis by Fountain Type in Urban vol.22, pp.12, 2013, https://doi.org/10.5322/JESI.2013.22.12.1599

Acknowledgement

Supported by : 경성대학교