2023年重庆市荣昌区一起小学校附属幼儿园诺如病毒暴发疫情调查分析
Investigation and analysis of an outbreak of norovirus in a primary school affiliated kindergarten in Rongchang District of Chongqing in 2023
邓亚莲 1熊华利2
作者信息
- 1. 重庆市荣昌区疾病预防控制中心,重庆 402460
- 2. 重庆市荣昌区卫生健康委员会,重庆 402460;重庆市荣昌区精神卫生中心,重庆 402460
- 折叠
摘要
目的 对2023年2月重庆市荣昌区一起诺如病毒引发的暴发疫情进行回顾性分析,探讨疫情发生原因和疫情处置经验,为疫情防控提供参考意见.方法 分析2023年2月1起发生在重庆市荣昌区一小学校附属幼儿园的诺如病毒暴发疫情,采用描述性流行病学方法分析疫情的流行病学特征、感染情况,采集疑似病例的肛拭子、外环境样本,通过实时荧光定量聚合酶链反应(Real time polymerase chain reaction,RT-PCR)检测诺如病毒核酸.结果 共搜索到病例15例,罹患率为15.96％(15/94),病例均为幼儿园学生,病例临床症状主要有呕吐(100％,15/15)、腹泻(93.33％,14/15)、恶心(66.67％,10/15)、腹痛(60.00％,9/15)、发热(6.67％,1/15)和头痛(6.67％,1/15);年龄3～6岁,男女性别比为0.66:1,疫情持续时间3d,采集人员肛拭子16人份,人员标本阳性检出率为62.50％(10/16),采集物表环境样32份,环境标本阳性检出率为53.13％(17/32).经RT-PCR检测27份阳性样本均为诺如病毒G Ⅱ型.结论 该起疫情是由诺如病毒呕吐物处理不当,继而通过人际传播引起的GⅡ型诺如病毒暴发疫情.学校应加强诺如病毒等传染病的健康教育和宣传,加强疫情监测,加强校园消毒,做好与家长的沟通和舆情监测工作.
Abstract
Objective To retrospectively analyze an outbreak caused by norovirus happend in a primary school affiliated kindergarten in Rongchang District of Chongqing.Methods A Norovirus outbreak that occurred in February 2023 in a primary school affiliated kindergarten in Rongchang District of Chongqing were analyzed.Descriptive epidemiological methods were used to analyze the epidemiological characteristics and infection status of the epidemic.Samples of anal test strips and external environment wipes were collected,and real-time polymerase chain reaction was used to detect norovirus nucleic acid.Results A total of 15 cases were found and the attack rate was 15.96％(15/94).All the cases were infants aged 3-6 years old,the clinical symptoms of the case mainly include vomiting(100％,15/15),diarrhea(93.33％,14/15),nausea(66.67％,10/15),abdominal pain(60.00％,9/15),fever(6.67％,1/15),headache(6.67％,1/15),and the male to female sex ratio was 0.66:1.The epidemic lasted for 3 days,16 samples of anal test paper were collected,and the positive detection rate of human specimens was 62.50％(10/16),32 samples of environmental surface samples were collected,and the positive detection rate of environmental specimens was 53.13％(17/32).All 27 positive samples were G Ⅱ type by real-time polymerase chain reaction.Conclusions The G Ⅱ norovirus outbreak was caused by improper handling of norovirus vomit and then human-to-human transmission.Schools should strengthen health education and publicity of infectious diseases such as norovirus,strengthen epidemic surveillance,strengthen campus disinfection,and do a good job of communication with parents and public opinion monitoring.
关键词
重庆市/诺如病毒/暴发/调查分析Key words
Chongqing/norovirus/outbreak/investigation and analysis引用本文复制引用
出版年
2024
NETL
NSTL
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