Epidemiological analysis on bud-events of Norovirus-associated infectious diarrhea in Shanghai, 2018
10.3760/cma.j.cn112338-20190613-00431
- VernacularTitle:上海市2018年诺如病毒感染性腹泻苗子事件流行病学分析
- Author:
Yi HE
1
;
Yinhao LU
;
Xiaoyan HUANG
;
Wenjia XIAO
;
Fangfang TAO
;
Huanyu WU
;
Chunyan LUO
;
Zhengan YUAN
Author Information
1. 复旦大学公共卫生学院，上海 200032；上海市疾病预防控制中心 200336
- Keywords:
Norovirus;
Bud event;
Surveillance
- From:
Chinese Journal of Epidemiology
2020;41(4):547-551
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the epidemiological characteristics related to Norovirus-associated infectious diarrhea bud events in Shanghai, and to discuss the value of bud events surveillance, so as to help Norovirus-associated infectious diarrhea control, prevention and to improve the surveillance system on bud events.Methods:Data related to 142 Norovirus-associated infectious diarrhea bud events were gathered from 16 districts of Shanghai areas in 2018 and were analyzed.Results:There were 2 peaks, April and November for 142 Norovirus-associated infectious diarrhea bud events reported in 2018. 98.59 % (140/142) of the bud events occurred in schools and kindergartens. 80.28 % (114/142) of the bud events would involve 6-19 cases per each event. The median time duration between the onset date of the first case and the reporting date of the event was 2 days and the median event duration was 7 days. The bud event scale and regional incidence of bud events as well as the reporting timelines were influential factors on the duration of the bud events. Conclusions:Two peaks, spring and winter bud events of the Norovirus-associated infectious diarrhea were seen in Shanghai in 2018. Schools and kindergartens were to be prioritized locations for control and prevention of Norovirus-associated infectious diarrhea bud events. Surveillance system was proved to have contributed to the early detection, reporting and control of bud events.
