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Assessing the water quality impacts of two Category-5 hurricanes on St. Thomas, Virgin Islands.
Water Research ( IF 11.4 ) Pub Date : 2019-12-24 , DOI: 10.1016/j.watres.2019.115440 Sunny C Jiang 1 , Muyue Han 1 , Srikiran Chandrasekaran 1 , Yingcong Fang 1 , Christina A Kellogg 2
Water Research ( IF 11.4 ) Pub Date : 2019-12-24 , DOI: 10.1016/j.watres.2019.115440 Sunny C Jiang 1 , Muyue Han 1 , Srikiran Chandrasekaran 1 , Yingcong Fang 1 , Christina A Kellogg 2
Affiliation
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Managing waterborne and water-related diseases is one of the most critical factors in the aftermath of hurricane-induced natural disasters. The goal of the study was to identify water-quality impairments in order to set the priorities for post-hurricane relief and to guide future decisions on disaster preparation and relief administration. Field investigations were carried out on St. Thomas, U.S. Virgin Islands as soon as the disaster area became accessible after the back-to-back hurricane strikes by Irma and Maria in 2017. Water samples were collected from individual household rain cisterns, the coastal ocean, and street-surface runoffs for microbial concentration. The microbial community structure and the occurrence of potential human pathogens were investigated in samples using next generation sequencing. Loop mediated isothermal amplification was employed to detect fecal indicator bacteria, Enterococcus faecalis. The results showed both fecal indicator bacteria and Legionella genetic markers were prevalent but were low in concentration in the water samples. Among the 22 cistern samples, 86% were positive for Legionella and 82% for Escherichia-Shigella. Enterococcus faecalis was detected in over 68% of the rain cisterns and in 60% of the coastal waters (n = 20). Microbial community composition in coastal water samples was significantly different from cistern water and runoff water. Although identification at bacterial genus level is not direct evidence of human pathogens, our results suggest cistern water quality needs more organized attention for protection of human health, and that preparation and prevention measures should be taken before natural disasters strike.
中文翻译：
评估两个5级飓风对维尔京群岛圣托马斯的水质影响。
在飓风引发的自然灾害发生后，管理与水有关的疾病和与水有关的疾病是最关键的因素之一。该研究的目的是确定水质损害，以便确定飓风后救济的优先事项，并指导有关灾难准备和救济管理的未来决策。在2017年Irma和Maria连续遭受飓风袭击后，灾区一经进入，就在美属维尔京群岛圣托马斯进行了实地调查。水样是从沿海沿海海洋的单个雨水箱中收集的，以及用于微生物浓缩的街道径流。使用下一代测序技术对样品中的微生物群落结构和潜在人类病原体的发生进行了研究。采用环介导的等温扩增来检测粪便指示菌粪肠球菌。结果表明，粪便指示菌和军团菌遗传标志物均普遍存在，但水样中的浓度较低。在22个水箱样本中，军团菌阳性86％，埃希氏菌志贺氏菌82％。在超过68％的雨水箱和60％的沿海水域中检出了粪肠球菌（n = 20）。沿海水样中的微生物群落组成与蓄水池水和径流水显着不同。尽管在细菌属水平上鉴定并不是人类病原体的直接证据，但我们的研究结果表明，水箱水质需要更多有组织的关注来保护人类健康，
更新日期：2019-12-25
中文翻译：
评估两个5级飓风对维尔京群岛圣托马斯的水质影响。
在飓风引发的自然灾害发生后，管理与水有关的疾病和与水有关的疾病是最关键的因素之一。该研究的目的是确定水质损害，以便确定飓风后救济的优先事项，并指导有关灾难准备和救济管理的未来决策。在2017年Irma和Maria连续遭受飓风袭击后，灾区一经进入，就在美属维尔京群岛圣托马斯进行了实地调查。水样是从沿海沿海海洋的单个雨水箱中收集的，以及用于微生物浓缩的街道径流。使用下一代测序技术对样品中的微生物群落结构和潜在人类病原体的发生进行了研究。采用环介导的等温扩增来检测粪便指示菌粪肠球菌。结果表明，粪便指示菌和军团菌遗传标志物均普遍存在，但水样中的浓度较低。在22个水箱样本中，军团菌阳性86％，埃希氏菌志贺氏菌82％。在超过68％的雨水箱和60％的沿海水域中检出了粪肠球菌（n = 20）。沿海水样中的微生物群落组成与蓄水池水和径流水显着不同。尽管在细菌属水平上鉴定并不是人类病原体的直接证据，但我们的研究结果表明，水箱水质需要更多有组织的关注来保护人类健康，
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