Epidemiological characteristics of mumps before and after adjustment of immunization strategy in Hebi City,2004-2023
Objective To analyze the epidemiological characteristics of mumps in Hebi City from 2004 to 2023,before and after the adjustment of immunization strategy and explore the influencing factors of the incidence of mumps,so as to provide scientific basis for the prevention and control of mumps.Methods The incidence data of mumps in Hebi City from 2004 to 2023 were collected and stratified by immunization strategy adjustments.Descriptive epidemiology and trend analysis using trend-x2 test were employed to examine the epidemiological features and incidence trends.Results A total of 5 990 mumps cases were reported from 2004 to 2023,with incidence rates ranging from 4.53/105 to 60.96/105,and an average annual incidence of 19.37/105,demonstrating a significant downward trend(x2trend=619.114,P＜0.05).The average annual incidence during the early immunization phase(2004-2008),one-dose immunization period(2009-2018),and the two-dose immunization period(2019-2023)was 29.19/105,18.34/105,and 12.51/105,respectively,with a consistent decline(x2trend=457.027,P＜0.05).Incidence in Qibin District,Shancheng District,Xunxian District,and Heshan District also showed a decreasing trend(x2trend value was 877.261,368.870,205.652 and 78.966,all P＜0.05).Seasonal peaks were observed in April-June and December-January.The incidence rate in males(23.89/1 05)was higher than in females(14.58/105)(x2=345.589,P＜0.05).Most of the cases were students under 15 years,nursery children,and scattered children,with a median age of onset at 8 years.The peak age of onset shifted from the 6-year-old group to the 8-year-old group following of immunization strategy adjustments.Conclusions Mumps incidence in Hebi City has significantly decreased from 2004 to 2023.Strengthening prevention and control measures in schools and kindergartens,enhancing mumps vaccine monitoring and revaccination efforts,conducting herd immunity assessments,and adjusting immunization strategies in a timely manner are recommended to further control mumps incidence and prevalence.
NETL
NSTL
万方数据
