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目的通过分析承德市某中学一起诺如病毒感染性腹泻暴发疫情的流行病学特征,为制定防控措施提供依据。方法采用现场流行病学调查方法 ,搜索病例并进行个案调查。结果 2008年10月6-13日该校共报告诺如病毒感染幸腹泻病例144例,罹患率为5.01%。平均潜伏期多在24~48h,最短12h,最长72h。净实验室检测及调查结果分析,为诺如病毒引起的群体性腹泻暴发疫情,经采取对现患病例集中管理就地隔离治疗的综合防治措施后,疫情得到控制。结论该次疫情为诺如病毒引起感染性腹泻事件,在诺如病毒感染性腹泻好发季节,应继续加强对集体单位、学校诺如病毒感染性腹泻疫情监测,积极开展健康教育,有效预防诺如病毒感染性腹泻疫情的发生。
Objective To analyze the epidemiological characteristics of an outbreak of Norovirus virus diarrhea in a middle school in Chengde City and provide the basis for the development of prevention and control measures. Methods The method of field epidemiology was used to search cases and conduct case studies. Results In October 6-13, 2008, a total of 144 cases of Norovirus infected with diarrhea were reported. The attack rate was 5.01%. The average incubation period was more in 24 ~ 48h, the shortest 12h, the longest 72h. Net laboratory testing and analysis of the survey results showed that outbreaks of Nosocomial Diarrhea caused by Norovirus were controlled after comprehensive prevention and treatment measures were put in place for centralized treatment and isolation of existing cases. Conclusions The outbreak was caused by norovirus as infectious diarrhea. In the infectious season of norovirus infectious diarrhea, we should continue to strengthen the monitoring of epidemic of infectious norovirus in collective units and schools, actively carry out health education, and effectively prevent constipation Such as the virus outbreaks of infectious diarrhea.