Abstract：Objective To investigate the epidemiological characteristics of school foodborne disease outbreaks in Hunan Province during 2006-2020, to analyze the dynamic changes and explore the causes so as to provide a basis for effectively improving prevention and control of school foodborne diseases. Methods A descriptive epidemiological analysis was conducted on the data of school foodborne disease outbreaks in Hunan Province from 2006 to 2020, which were reported by the Information System for Public Health Emergency Management from China Information System for Disease Prevention and Control. The seasonal decomposition index model was used for time series analysis, and the fitting degree and application value of the model were evaluated. Results During 2006-2020, a total of 260 incidents of foodborne diseases in schools in Hunan Province werereported, involving 398,876 persons, with an incidence rate of 3.08%. There were 79 incidents of food poisoning (accounting for 30.38%, with 3,085 reported cases) and 181 incidents of foodborne intestinal infectious diseases (accounting for 69.62%, with 9,196 reported cases). Most reported incidents occurred in 2018 (n=37, 14.23%). Most reported cases occurred in 2006 (n=1,745, 14.21%). The differences in the incidence rates of different years were statistically significant (χ2=3,458.51, P<0.05). Thirteen cities and one prefecture in Hunan Province all reported school foodborne disease outbreaks. Most of the reported incidents and most of the reported cases occurred in Changsha City, with a total of 36 reported incidents (13.84%) and 1,943 reported cases (15.82%).The incidence rates of foodborne diseases in schools in different regions showed statistically significant differences (χ2=2,103.58, P<0.05), with the highest incidence rate in Zhangjiajie (8.13%). Foodborne disease incidents were reported in all types of schools, with the largest number of incidents reported in primary and middle schools (each n=86, 33.07%). There were statistically significant differences in the incidence rates of foodborne diseases in different types of schools (χ2=3,259.15, P<0.05), with the highest incidence rate in kindergartens (12.83%). P values of LJung-box Q18 were all greater than 0.05, suggesting that the time series model had good fittingaccuracy. Conclusion The reported incidents and cases of school foodborne diseases in Hunan Province from 2006 to 2020 showed overall volatility. The majority of the incidents of school foodborne diseases occurred in Central and Northern Hunan, and pupils and middle school students were the high-risk groups. The time series analysis modelhasgoodfitting effect with the actual dataand a certain application value in predicting the trend of foodborne diseases in schools.
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2023, Vol. 30 
