Abstract：Objective To analyze the epidemiological characteristics of clustering epidemics of varicella in schools and kindergartens in Guangzhou City from 2013 to 2018 so as to provide a basis for formulating varicella prevention and control strategy. Methods Descriptive epidemiological methods were used to analyze the data about clustering epidemics of varicella reported by each district of Guangzhou City in 2013-2018. Results A total of 1,876 clustering epidemics of varicella occurring in schools and kindergartens were reported in Guangzhou City from 2013 to 2018, with the average attack rate of 0.63%. The incidence peak occurred during March-June as well as from October to January of next year. The proportions of clustering epidemics of varicella occurring in schools, kindergartens, primary schools, middle schools, and colleges & other institutions accounted for 28.04%, 56.45%, 13.33% and 2.19%, respectively. Statistically significant differences were found in the average number of cases per outbreak, the number of classes involving into outbreaks, the attack rate and outbreak duration amongst the urban, suburban and rural areas (all P<0.05). The above-mentioned indexes were all lower in the urban area than in the suburban and rural areas. There were statistically significant differences in the number of classes involving into outbreaks, the attack rate and outbreak duration between conducting and not conducting contingency vaccination (all P<0.05). The above-mentioned indexes were all lower in outbreaks with contingency vaccination than in outbreaks without contingency vaccination. Conclusions Kindergartens and primary schools are the key units for prevention and control of clustering epidemics of varicella; and hence, strengthening the prevention and control work in these units are necessary. Contingency vaccination can minimize the scale of outbreak and shorten the duration of outbreak. The results suggest that contingency vaccination should be launched as soon as possible in kindergartens and schools with clustering epidemic of varicella.
贺晴, 李美霞, 许建雄, 陆剑云. 2013—2018年广州市学校和托幼机构水痘聚集性疫情的流行病学分析[J]. 实用预防医学, 2021, 28(1): 32-34.
HE Qing, LI Mei-xia, XU Jian-xiong, LU Jian-yun. Epidemiological analysis on clustering epidemics of varicella in schools and kindergartens in Guangzhou City, 2013-2018. , 2021, 28(1): 32-34.
2021, Vol. 28 
