Analysis on epidemiological characteristics of pertussis in Chenghua District of Chengdu City from 2013 to 2022
Objective To analyze the incidence and epidemiological characteristics of pertussis in Chenghua District of Chengdu City,and to provide scientific basis for controlling pertussis epidemic and optimizing immunization strategies.Methods The data of pertussis cases in Chenghua District of Chengdu City from 2013 to 2022 were collected from the Chinese Disease Control and Prevention Information System and case investigation data of pertussis in this District.Descriptive epidemiological methods were used to analyze the epidemiological characteristics of pertussis.Chi-square test was used to compare the rates,and P＜0.05 was considered to be statistically significant.Results A total of 218 cases of pertussis were reported in Chenghua District of Chengdu City from 2013 to 2022.The average annual reported incidence rate was 2.097/105,and the incidence rates showed an overall increasing trend(x2trend=166.474,P＜0.001).The incidence of pertussis was seasonal,and the peak was from February to August.The incidence rate of the group less than 1 year old was 106.038/105,which was the highest in all age groups.85.32％of the cases were reported by 6 hospitals.Conclusions The reported incidence of pertussis in Chenghua District of Chengdu City showed an increasing trend from 2013 to 2022.Most cases were children less than 1 year old.It is suggested to improve the pertussis surveillance system and optimize pertussis immunization strategies.
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