Epidemic characteristics of major acute infectious disease clusters/outbreaks in Changping District of Beijing,2016-2021
Objective To analyze the distribution characteristics of major acute infectious disease clusters/outbreaks in Changping District of Beijing from 2016 to 2021,and to provide a basis for early detection of the epidemics and taking targeted prevention and control measures in advance.Methods The epidemiological and pathogenic data about fever,vomiting/diarrhea,hand-foot-mouth disease(HFMD)clusters or outbreaks in Changping District from 2016 to 2021 were collected,and descriptive epidemiological methods were used to analyze the composition,time,place,etiology and other distribution characteristics of the epidemics.Results From 2016 to 2021,a total of 670 clusters/outbreaks were reported in Changping District,and most of them were clusters(95.22％).In the clusters reported,the proportion of HFMD was the highest(46.08％).In the outbreaks reported,the proportion of vomiting/diarrhea was the highest(50.0％).The median reporting interval for all the clusters/outbreaks was 2 days,and the duration of the epidemic 2 days.The reporting interval of the epidemic was positively correlated with the duration of the epidemics,with correlation coefficients being rfever=0.426,rvomiting/diarrhea=0.519,and rHFMD=0.720(all P＜0.001)respectively.Childcare institutions and primary schools were the main places where the epidemic occurred,accounting for 55.07％and 27.91％of the total number of reported epidemics respectively.May-July and November-December were the peak periods for epidemic reporting each year,with 64.18％of fever outbreaks occurring from December to January of the next year,77.88％of vomiting/diarrhea outbreaks occurring in November-December and March-June,and 50.0％of HFMD outbreaks concentrating in May-July.Conclusion From 2016 to 2021,the clusters/outbreaks of key acute infectious diseases in Changping District were mainly influenza,HFMD and norovirus infection related fever,HFMD and vomiting/diarrhea.Early detection and timely reporting could shorten the duration of the epidemic.The epidemics were mainly occurred in primary and secondary schools as well as kindergartens.Targeted prevention and control measures should be taken in combination with seasonal characteristics.
key acute infectious diseasedisease clusteroutbreak of the epidemicepidemic characteristicepidemic prevention and control
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