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[目的]回顾分析本市某老年公寓暴发一起以呕吐、腹泻为主要症状的胃肠炎疫情,为胃肠炎暴发处理提供依据。[方法]收集整理暴发疫情调查资料,根据临床、流行病学和实验室检验结果进行分析。[结果]该老年公寓共发生32例胃肠炎病例,罹患率为21.77%;采用预防措施后无续发病例,采集18件病人粪便标本中ELASA检出诺如病毒阳性5件,阳性率27.8%;RT-PCR检出诺如病毒7件阳性,阳性率38.9%,基因测序分析研究证实为诺如病毒GGⅡ/4型。[结论]该起腹泻疫情为诺如病毒感染所致,对现场进行消毒预防续发病例的发生是非常有效的。
[Objective] To retrospectively analyze the epidemic situation of gastroenteritis with vomiting and diarrhea as the main symptom in an elderly apartment in our city, and provide basis for treatment of gastroenteritis outbreak. [Method] The survey data of outbreaks were collected and analyzed according to the clinical, epidemiological and laboratory test results. [Results] A total of 32 cases of gastroenteritis occurred in the elderly apartments, with an attack rate of 21.77%. No recurrences were found after prophylaxis. Of the 18 cases, ELASA was detected in 5 positive samples of stool samples and the positive rate was 27.8 %; RT-PCR detection of Norovirus 7 were positive, the positive rate of 38.9%, gene sequencing analysis confirmed that Norovirus GG Ⅱ / 4 type. [Conclusion] The epidemic of diarrhea was caused by norovirus infection, which was very effective in the field of disinfection and prevention of recurrence.