Hygiene risk of waterborne pathogenic viruses in rural communities using onsite sanitation systems and shallow dug wells
Hygiene risk of waterborne pathogenic viruses in rural communities using onsite sanitation systems and shallow dug wells
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DOI：
10.1016/j.scitotenv.2020.141775
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发表时间：
2021-01-15
影响因子：
9.8
通讯作者：
Gimhana, Kasun
中科院分区：
文献类型：
--
作者：
Otaki, Yurina;Otaki, Masahiro;Gimhana, Kasun
通过确定威尔斯和OSS管理之间的安全后退距离，我们评估了现场卫生系统（OSS）对斯里兰卡农村饮用水威尔斯的卫生影响。虽然以前的研究使用了细菌指标，如E。大肠杆菌来评估开放源码软件的影响，这些参数不能评估水传播致病病毒（如轮状病毒）的卫生风险。因此，选择辣椒温和斑点病毒作为人类特异性粪便病毒污染的指标。从病毒的角度来看，不仅井和最近的OSS之间的水平距离可以合理地代表卫生安全，而且OSS污泥管理可以减轻威尔斯的污染，即使在距离OSS很短的距离。定量微生物风险评估表明，与国际标准相比，轮状病毒的感染风险极高。由于适当管理开放源码软件是减少病毒风险的关键，因此有必要向不了解这种管理的重要性和必要性的居民伸出援手。(C)2020爱思唯尔B.V.保留所有权利。
We evaluated the hygienic influence of onsite sanitation systems (OSSs) on drinking water wells in rural Sri Lanka by determining the safe setback distance between wells and the management of OSSs. Although previous studies have used bacterial indicators such as E. coli to evaluate the OSS impact, these parameters cannot assess the hygiene risk for waterborne pathogenic viruses (e.g. rotaviruses). Therefore, pepper mild mottle virus was selected as an indicator of human-specific faecal virus contamination. From a viral perspective, not only can the horizontal distance between a well and the nearest OSS reasonably represent hygiene safety, but the OSS sludge management can mitigate the contamination of wells even at short distances from the OSSs. Quantitative microbial risk assessment suggests that the infection risk of rotavirus was extremely high compared to the international standard. As proper management of OSSs would be key to reducing viral risk, it is necessary to reach out to the residents who are unaware of the importance and necessity of such management. (C) 2020 Elsevier B.V. All rights reserved.