A quantitative risk assessment of waterborne infectious disease in the inundation area of a tropical monsoon region
Flooding and inundation are annual events that occur during the rainy season in Cambodia, and inundation has a strong relationship with human health. This study simulated the coliform bacteria distribution using a hydraulic model and estimated the impact of inundation on public health using a dose–r...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Springer Verlag
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/6253 |
| _version_ | 1848745022893064192 |
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| author | Kazama, S. Aizawa, T. Watanabe, T. Sarukkalige, Priyantha Ranjan Gunawardhana, L. Amano, A. |
| author_facet | Kazama, S. Aizawa, T. Watanabe, T. Sarukkalige, Priyantha Ranjan Gunawardhana, L. Amano, A. |
| author_sort | Kazama, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Flooding and inundation are annual events that occur during the rainy season in Cambodia, and inundation has a strong relationship with human health. This study simulated the coliform bacteria distribution using a hydraulic model and estimated the impact of inundation on public health using a dose–response model. The model parameters were calibrated using field survey data from Cambodia and obtained good agreement with the coliform group count distribution. The results suggest that the impact of inundation on human health is most noticeable in residential areas. The annual average risk of infection during medium-sized flood events is 0.21. The risk due to groundwater use ranges from 0.12 to 0.17 in inundation areas and reaches as high as 0.23 outside the inundation areas. The risk attributed to groundwater use is therefore higher than that for surface water use (0.02–0.06), except in densely populated areas at the city center. There is a high risk for infection with waterborne disease in residential areas, and the annual average risk during small flood events is 0.94. An assessment of possible countermeasures to reduce the risk shows that the control of inundation may bring more risk to public health in Cambodia. Shallower inundation water (<0.3 m) leads to a higher risk of infection, but if the depth is greater than 2 m, the risk is low in residential areas.The simulated results explain the spatial distributions of infection risk, which are vitally important for determining the highest priority places with relatively high risk and will be helpful for decision makers when considering the implementation of countermeasures. |
| first_indexed | 2025-11-14T06:10:45Z |
| format | Journal Article |
| id | curtin-20.500.11937-6253 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:10:45Z |
| publishDate | 2012 |
| publisher | Springer Verlag |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-62532017-09-13T16:06:09Z A quantitative risk assessment of waterborne infectious disease in the inundation area of a tropical monsoon region Kazama, S. Aizawa, T. Watanabe, T. Sarukkalige, Priyantha Ranjan Gunawardhana, L. Amano, A. The Mekong River Hydrological model The Mekong River – Concentration of coliform bacteria – Dose-response model – Hydrological model Concentration of coliform bacteria Dose-response model Flooding and inundation are annual events that occur during the rainy season in Cambodia, and inundation has a strong relationship with human health. This study simulated the coliform bacteria distribution using a hydraulic model and estimated the impact of inundation on public health using a dose–response model. The model parameters were calibrated using field survey data from Cambodia and obtained good agreement with the coliform group count distribution. The results suggest that the impact of inundation on human health is most noticeable in residential areas. The annual average risk of infection during medium-sized flood events is 0.21. The risk due to groundwater use ranges from 0.12 to 0.17 in inundation areas and reaches as high as 0.23 outside the inundation areas. The risk attributed to groundwater use is therefore higher than that for surface water use (0.02–0.06), except in densely populated areas at the city center. There is a high risk for infection with waterborne disease in residential areas, and the annual average risk during small flood events is 0.94. An assessment of possible countermeasures to reduce the risk shows that the control of inundation may bring more risk to public health in Cambodia. Shallower inundation water (<0.3 m) leads to a higher risk of infection, but if the depth is greater than 2 m, the risk is low in residential areas.The simulated results explain the spatial distributions of infection risk, which are vitally important for determining the highest priority places with relatively high risk and will be helpful for decision makers when considering the implementation of countermeasures. 2012 Journal Article http://hdl.handle.net/20.500.11937/6253 10.1007/s11625-011-0141-5 Springer Verlag fulltext |
| spellingShingle | The Mekong River Hydrological model The Mekong River – Concentration of coliform bacteria – Dose-response model – Hydrological model Concentration of coliform bacteria Dose-response model Kazama, S. Aizawa, T. Watanabe, T. Sarukkalige, Priyantha Ranjan Gunawardhana, L. Amano, A. A quantitative risk assessment of waterborne infectious disease in the inundation area of a tropical monsoon region |
| title | A quantitative risk assessment of waterborne infectious disease in the inundation area of a tropical monsoon region |
| title_full | A quantitative risk assessment of waterborne infectious disease in the inundation area of a tropical monsoon region |
| title_fullStr | A quantitative risk assessment of waterborne infectious disease in the inundation area of a tropical monsoon region |
| title_full_unstemmed | A quantitative risk assessment of waterborne infectious disease in the inundation area of a tropical monsoon region |
| title_short | A quantitative risk assessment of waterborne infectious disease in the inundation area of a tropical monsoon region |
| title_sort | quantitative risk assessment of waterborne infectious disease in the inundation area of a tropical monsoon region |
| topic | The Mekong River Hydrological model The Mekong River – Concentration of coliform bacteria – Dose-response model – Hydrological model Concentration of coliform bacteria Dose-response model |
| url | http://hdl.handle.net/20.500.11937/6253 |