摘要
目的:调查某学校发生的一起胃肠炎暴发疫情,分析传播途径和传染来源。方法:于2010年3月7日至25日,在该学校查看缺课登记表、医务室门诊日志,设立临时报告系统等方法收集胃肠炎病例,病例定义采用症状指数方法,症状指数大于3者为病例。开展病例对照研究,分析发病危险因素。并采集病例标本,食品留样,水样等标本进行诺如病毒和致病菌检测。结果:共收集到20个病例,其中5例病例2型诺如病毒检测阳性。食物和饮水中未发现致病菌和诺如病毒。病例对照研究发现,洗手次数大于5次为发病的保护因素。结论:在校外感染的首例病例为本次疫情传染源,首例病例未及时隔离为疫情蔓延的主要原因。
Objective To identify the cause and risk factors of a gastroenteritis outbreak in a school in Zhejiang province.Methods Gastroenteritis cases were identified through reviewing absenteeism registration book,clinical registration book,and a temporary reporting systemSymptom index larger than 3 was used as a criteria to define casesRetrospective cohort study was conducted to analyze risk factorsSpecimens,samples of food left,water samples were collected for detection of Norovirus and bacteria.Results A total of 20 cases were identified,of which 5 cases were positive of type 2 NorovirusNo pathogens were detected in food and drinking waterCase-control study found that hand-washing more than 5 times was a protective factor for the disease.Conclusion First case infected outside school was the source of outbreak,and delayed isolation of the first case was the main reason of the spread of the disease.
出处
《中国农村卫生事业管理》
2012年第1期68-70,共3页
Chinese Rural Health Service Administration
关键词
诺如病毒
胃肠炎
暴发
Norovirus
gastroenteritis
outbreak
