Assessing Pathogen Risk to Swimmers at Non-Sewage Impacted Recreational Beaches
Assessing Pathogen Risk to Swimmers at Non-Sewage Impacted Recreational Beaches
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DOI：
10.1021/es903523q
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发表时间：
2010-04-01
影响因子：
11.4
通讯作者：
Ashbolt, Nicholas J.
中科院分区：
文献类型：
--
作者：
Schoen, Mary E.;Ashbolt, Nicholas J.
使用定量微生物风险评估(QMRA)预测游泳者在休闲海滩上来自新鲜污水和非污水粪便来源的胃肠道疾病的风险。QMRA估计了意外摄入含有特定浓度粪便指示细菌的娱乐用水的患病概率，在这里，肠球菌的几何平均限值为35 CFU 100毫升(-1)，来自混合来源或单个来源。以海鸥为例，以非污水粪便来源为例，预测的患病概率中位数低于疾病基准0.01。当粪便来源改为处理不佳的污水时，预测患病概率中值与患病基准之间的相关性很小。对于受到海鸥和污水废物混合影响的水域，排泄物指标的主要来源并不总是预测的主要风险来源。
The risk of gastrointestinal illness to swimmers from fresh sewage and non-sewage fecal sources at recreational beaches was predicted using quantitative microbial risk assessment (QMRA). The QMRA estimated the probability of illness for accidental ingestion of recreational water with a specific concentration of fecal indicator bacteria, here the geometric mean enterococci limit of 35 cfu 100 mL(-1), from either a mixture of sources or an individual source. Using seagulls as an example non-sewage fecal source, the predicted median probability of illness was less than the illness benchmark of 0.01. When the fecal source was changed to poorly treated sewage, a relativity small difference between the median probability of illness and the illness benchmark was predicted. For waters impacted by a mixture of seagull and sewage waste, the dominant source of fecal indicator was not always the predicted dominant source of risk.