Epidemic characteristics of brucellosis in Jinan City,2015-2022
Objective To understand the epidemic characteristics of human brucellosis in Jinan City from 2015 to 2022,and to provide a basis for the development of brucellosis prevention and control strategies.Methods We collected the data on brucellosis cases and case epidemiological surveys in Jinan City during 2015-2022,and descriptive epidemiological methods were used to analyze the epidemic characteristics of brucellosis.Results A total of 2,015 cases of brucellosis were reported in Jinan City from 2015 to 2022,among which the incidence rates in 2015-2016 showed an increasing trend,while the incidence rates in 2016-2022 showed an overall decreasing trend year by year(Trend Z=6.514,P＜0.001).The average annual incidence rate was 3.34/100,000.No death case was found.Cases were reported in each month,the peak incidence season was in spring and summer,and a total of 1,380 cases were reported in March-August,accounting for 68.49％of the total number of the cases.The cases were mainly distributed in Zhangqiu District,Licheng District,Changqing District,Shanghe County and Pingyin County,with a total of 1,591 cases reported,accounting for 78.96％of the total number of the cases.The number of male cases was more than that of female cases,with a male-to-female sex ratio of 2.7:1.The median of age of onset was 53 years.Farmers accounted for 85.46％of the total cases(1,722/2,015).The median of time interval between onset and confirmed diagnosis was 16 days.Conclusion Comprehensive prevention and control measures should be further implemented in Jinan City,and brucellosis prevention and treatment should be enhanced so as to effectively control the epidemic of the disease.
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