Investigation on Norovirus prevalence in catering companies and train station in Beijing during non-epidemic season in 2019
10.3760/cma.j.cn112150-20200728-01063
- VernacularTitle:2019年北京市非流行季餐饮服务单位诺如病毒污染状况研究
- Author:
Yang ZHENG
1
;
Lei JIA
;
Baiwei LIU
;
Zhiyong GAO
;
Yi TIAN
;
Xiaoli WANG
;
Hanqiu YAN
;
Quanyi WANG
Author Information
1. 北京市疾病预防控制中心传染病地方病控制所 北京市预防医学研究中心，北京 100013
- Keywords:
Norovirus;
Asymptomatic infections;
Contamination status;
Cross-sectional study
- From:
Chinese Journal of Preventive Medicine
2021;55(7):875-878
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the prevalence of Norovirus infection among kitchen workers in Beijing, and the contamination status of Norovirus in catering companies and train station.Methods:A cross-sectional survey was conducted to collect anal swab specimens and environmental specimens from catering companies in 16 districts of Beijing and in 3 big train stations. Norovirus nucleic acid was detected by fluorescence quantitative PCR. The contamination status of Norovirus in the environment and the asymptomatic infection status of kitchen workers was analyzed in this study.Results:A total of 650 catering companies were investigated. 1 302 anal swabs or stool specimens and 2 600 environmental swabs were collected and tested. Among the 644 catering companies out of train stations, 1 290 anal swabs or stool specimens and 2 576 environmental swabs were collected and tested. The asymptomatic infection rate of Norovirus was 0.85% (11/1 290) among kitchen workers of the catering companies out of the train stations, while the positive rate of norovirus contamination in the environment was 0.04% (1/2 576). Norovirus was not detected in the specimens collected from the kitchen workers and the environment of the catering companies in train stations.Conclusion:During the non-epidemic season of Norovirus in 2019, the infection rate of Norovirus among kitchen workers in Beijing is low, and the environment is contaminated by Norovirus.
