摘要
目的 探讨诺如病毒感染疫情的流调处置方法和经验,为有效防控诺如病毒感染疫情提供依据.方法 采用现场流行病学调查2023年2月9日在市中区A学校发生的诺如病毒感染聚集性疫情.结果 该起疫情共计搜索到18例诺如病例,涉及3个班级,主要分布在四年级3班和四年级4班,罹患率分别为17.4％(8/46)和19.1％(9/47).主要临床症状有呕吐、腹痛、发热.首末例发病时间分别为2月8日9:00和2月9日18:00.7份病例粪便标本均检出诺如病毒GⅡ型.结论 本疫情为1起诺如病毒GⅡ型感染引起的学校聚集疫情.
Abstract
Objective To explore the methods and experience of epidemic control and management of norovirus in-fection to provide evidence for effective prevention and control of norovirus infection.Methods On February 9,2023,an on-site epidemiological investigation of the cluster outbreak of norovirus infection in School A,Shizhong District was conducted.Results A total of 18 norovirus cases were found in this outbreak,involving 3 classes,mainly in Class 3,Grade 4,and Class 4,Grade 4,with prevalence rates of 17.4％(8/46)and 19.1％(9/47),respectively.The main clinical symptoms were vomiting,abdominal pain,and fever.The onset of the first and last cases was at 9:00 on February 8 and 18:00 on February 9,respectively.Norovirus G Ⅱ was detected in stool samples from all 7 cases.Conclusion This outbreak is a school cluster outbreak caused by norovirus G Ⅱ infection.
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