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首页> 美国卫生研究院文献>Eurosurveillance >An unusual outbreak of norovirus associated with a Halloween-themed swimming pool party in England 2016
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An unusual outbreak of norovirus associated with a Halloween-themed swimming pool party in England 2016

机译：2016年一场异常的诺如病毒爆发与英格兰的万圣节主题泳池派对有关

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摘要

In October 2016, an outbreak of norovirus occurred among attendees of a Halloween-themed party at a public swimming pool in the south-east of England. Norovirus genogroup II was confirmed in 11 cases. In the retrospective cohort study of pool users, 68 individuals (37 female and 31 male), with a median age of 11 years (range: 0–50 years), met the case definition of developing diarrhoea or vomiting between 6 and 72 h after the pool visit. Multivariable analysis showed that increasing age was associated with a reduced risk of illness (odds ratio = 0.91; 95% confidence interval: 0.83–0.99). Pool behaviours (swallowing water) and the timing of visit (attending pool party after automatic dosing system was switched off) were independently associated with increased risk. Environmental investigations revealed that the automatic dosing system was switched off to reduce chlorine levels to an intended range of 0.5–1 parts per million to facilitate the use of a commercial red dye. There was a lack of compliance with the operator's own pool operating procedures, particularly on maintaining effective chlorine levels in pool water, recording of test results and recording of actions undertaken. This outbreak highlights the risks of lowering chlorine levels when using pool water colourants.
机译：2016年10月，在英格兰东南部的公共游泳池举行的以万圣节为主题的派对的参与者中爆发了诺如病毒。确认诺如病毒基因组II为11例。在一项针对泳池使用者的回顾性队列研究中，有68名患者（37名女性和31名男性），中位年龄为11岁（范围：0至50岁），符合在6至72小时后出现腹泻或呕吐的病例定义。泳池参观。多变量分析表明，年龄的增长与患病风险的降低相关（几率= 0.91； 95％的置信区间：0.83-0.99）。泳池行为（吞咽水）和就诊时间（自动加药系统关闭后参加泳池派对）与增加的风险独立相关。环境调查表明，自动加药系统已关闭，以将氯含量降低到百万分之0.5-1份的预期范围，以便利使用商业红色染料。缺乏遵守操作员自己的泳池操作程序的规定，特别是在维持泳池水中有效氯含量，记录测试结果和记录所采取措施方面。这次暴发凸显了使用泳池水着色剂时降低氯含量的风险。

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