广州市2003-2007年学校诺如病毒胃肠炎疫情分析

Epidemiological Analysis on Norovirus Gastroenteritis Outbreaks in Schools of Guangzhou City from 2003 to 2007

目的了解广州市2003-2007年学校诺如病毒胃肠炎流行特征,为制定预防控制策略提供科学依据。方法采用描述流行病学方法,对广州市2003-2007年发生在学校的诺如病毒胃肠炎爆发疫情资料进行分析。结果2003-2007年广州市共报告14起学校诺如病毒胃肠炎疫情,共有病例547例。10-12月为发病高峰,男、女性别比为1.21:1,病例主要分布在小学和中学。感染来源尚不清楚,传染途径可能以消化道为主。结论小学和中学等人群聚集的单位容易发生诺如病情胃肠炎疫情,应及时采取预防控制措施。

Objective To perform an epidemiological study of Norovirus gastroenteritis in schools of Guangzhou city from 2003 to 2007, and to develop strategies for the prevention and control of Norovirus gastroenteritis. Methods Descriptive epidemiology was used to study Norovirus gastroenteritis outbreaks in schools from 2003 to 2007 in Guangzhou. Results There were 14 outbreaks of N0rovirus gastroenteritis and 547 cases in Guangzhou from 2003 to 2007. The epidemic reached a peak from October to December, and the sex ratio was 1.21： 1. Most cases occurred in primary and secondary schools. The origin of infection was dimness and the transnfission may through digestive tract. Conclusion The Norovirus gastroenteritis tends to occur in outbreaks and the units which have collective public are the high risk units, such as primary and secondary schools. Taking control measures as soon as possible can avoid diffusing.