Abstract：Objective To analyze the vomiting and diarrhea symptoms-induced school absenteeism data collected from surveillance system for school absenteeism due to illness, to investigate the epidemic characteristics of vomiting and diarrhea symptoms in school absenteeism due to illness in primary and middle schools in Minhang district of Shanghai, and to provide evidence for better preventing and controlling aggregation epidemic of vomiting and diarrhea on campus. Methods The surveillance data regarding school absenteeism due to vomiting and diarrhea symptoms in primary and middle schools in Minhang district of Shanghai in the second semester of 2018 academic year were collected from the new version of Network Direct Reporting System for Illness-induced Absenteeism in Shanghai. Descriptive epidemiology method was used to analyze the epidemic characteristics of school absenteeism due to vomiting and diarrhea symptoms and the features of clustered potential events. Results We monitored totally 85 days in 161 schools in Minhang district in the second semester of 2018 academic year, and 3,599 person-days were absent due to vomiting and diarrhea symptoms, with a school absence rate of 0.27‰. The rate of school absenteeism due to vomiting and diarrhea symptoms was found to be the highest in March(0.35‰), showing a statistically significant difference as compared with those in other months(χ2=1,181.840, P=0.000). The rate of vomiting and diarrhea symptoms-induced school absenteeism in pupils was the highest (0.35‰), with statistically significant differences among students from primary, middle and secondary vocational schools (χ2=313.468, P=0.000). The rate of vomiting and diarrhea symptoms-induced school absenteeism in first-grade pupils was the highest (0.44‰), with statistically significant differences among pupils from different grades (χ2=105.827, P=0.000). The time distribution of clustered bud-events was consistent with that of the school absence rate, but the regional distribution was different. 48.75% of the cases in bud-events resumed on-campus classes after 3 days. Conclusions The symptoms of vomiting and diarrhea are common reasons for school absenteeism among primary and middle school students, with a high rate of school absence; and hence, it is impossible to identify the first case of clustered epidemic. Prevention and control of clustered epidemic on campus should focus on timely reporting and standardized disposal of vomiting.
成玉萍, 温晓飒. 上海市闵行区中小学呕吐腹泻因病缺课监测分析[J]. 实用预防医学, 2020, 27(8): 926-929.
CHENG Yu-ping, WEN Xiao-sa. Surveillance and analysis of school absenteeism due to vomiting and diarrhea in primary and middle schools in Minhang district of Shanghai. , 2020, 27(8): 926-929.
2020, Vol. 27 
