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目的分析2011—2013年常州市学校诺如病毒感染暴发事件流行病学特征,为优化预防控制措施提供科学依据。方法应用描述流行病学方法,对常州市学校诺如病毒感染暴发事件及相关信息进行分析。结果 2011—2013年常州市共发生学校诺如病毒感染暴发事件7起,感染性腹泻病例505例,临床症状主要为呕吐、腹泻、腹痛等,事件主要发生在小学,暴发事件具有明显的季节性,秋冬季罹患率(6.21%)高于春夏季(2.83%)。病毒分型主要为诺如病毒Ⅱ型。结论常州市2011—2013年疫情主要发生在秋冬季,以学校等集体单位为主,要优化防控措施,控制疾病暴发。
Objective To analyze the epidemiological characteristics of norovirus infection in schools in Changzhou from 2011 to 2013 and provide a scientific basis for the optimization of prevention and control measures. Methods Describing epidemiological methods and analyzing the outbreak of Norovirus infection and related information in Changzhou school. Results In 2011-2013, there were 7 outbreaks of norovirus infection in school in Changzhou City, 505 cases of infectious diarrhea. The main clinical symptoms were vomiting, diarrhea, abdominal pain, etc. The events mainly occurred in primary schools and the outbreaks were obviously seasonal , The attack rate in autumn and winter (6.21%) is higher than that in spring and summer (2.83%). The virus typing is mainly Norovirus type II. Conclusion The epidemic situation in Changzhou City during 2011-2013 mainly occurred in autumn and winter, mainly in collective units such as schools, so as to optimize prevention and control measures and control disease outbreaks.