Epidemiological characteristics and prevention strategies of pertussis in Shaodong City,Hunan Province,2019-2023
Objective To understand the epidemic characteristics of pertussis in Shaodong City,Hunan Province in 2019-2023,to analyze the monitoring data,and to provide a reference basis for improving prevention and control strategies.Methods The continuous monitoring data regarding pertussis incidence,epidemiological characteristics,vaccination status and vaccine protection effect in Shaodong City during 2019-2023 were analyzed with descriptive analysis,and the prevention and control strategies were proposed.Results The number of pertussis cases in Shaodong City in 2023 reached 151,and most of the cases were children,accounting for 99.34％of the total cases.The proportion of cases aged under 1 year old accounted for 30.46％,showing a decrease compared with those in 2019-2022.The proportions of cases aged 3-5 years and 6-12 years were 30.46％and 29.14％respectively,showing an increase compared with those in 2019-2022.The vaccination rates of most age groups were above 90％,but the vaccination rates of the third dose of basic immunization in the 1-year-old group and the booster immunization in the 2-year-old group and the 3-year-old group were all below 90％.Conclusion The infection rates of pertussis in Shaodong City during 2019-2023 showed an increasing trend year by year,and most of the cases were infants as well as young children.Immunization is the best way to protect,and the immunization program still needs to be further improved.
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