Analysis of the duration of Noravirus shedding among infected kindergarten children during an outbreak
10.16835/j.cnki.1000-9817.2020.05.034
- VernacularTitle:一起托幼机构诺如病毒聚集性疫情病例排毒时间分析
- Author:
WANG Yaxin, SHEN Xiaoting, WANG Chenxi, CHEN Yuanfang, ZHANG Jianling, ZHAO Xuetao, LIU Jingyi, WU Qiangsong
1
Author Information
1. Microbiology laboratory, Xuhui Center for Disease Control and Prevention, Shanghai(200237), China
- Publication Type:Journal Article
- Keywords:
Enterovirus infections;
Disease outbreaks;
Time;
Epidemiologic studies;
Child
- From:
Chinese Journal of School Health
2020;41(5):762-764
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the duration of Norovirus (NoV) shedding among infected school children during a NoV outbreak in a kindergarten,and to provide scientitic basis for epidemic prevention and control.
Methods:Specimens and epidemiological data were collected from suspected cases, and specimens were detected using real-time RT-PCR to determine whether or not infecting with NoV. Specimens were collected every 3-7 days from NoV-infected children until specimens became negative for NoV.
Results:A total of 14 suspected cases were reported, and 12 of them were infected with NoV. The average duration of NoV shedding was (26.58±17.94)d. The specimens among 9 from 12 Nov-infected cases were positive at 7 days, 8 NoV-intected cased remained positive at 14 days and 7 Non-infected cased at least 21 days.
Conclusion:Since NoV shedding duration among NoV-infected children tends to longer than their isolation time during outbreaks, reinforcement of hygiene practices among these school children is especially necessary to reduce the risk of virus secondary transmissions after their return to school.
