Epidemiological analysis of major vector-borne diseases in Weifang from 2011 to 2023
Objective To analyze the epidemiological characteristics of major vector-borne diseases in Weifang from 2011 to 2023,so as to provide a basis for developing strategies for the prevention and control of these diseases.Methods Collected surveillance data of major vector-borne diseases and demographic information in Weifang were used to conducted time-series analysis of disease onset,mapping of case distribution,and statistical inference.Joinpoint regression analysis was employed to calculate the annual percentage change(APC)and average annual percentage change(AAPC).Results The overall analysis of the incidence trend of major vector-borne infectious diseases in Weifang City from 2011 to 2023 showed no statistically significant differences,but a downward trend was observed from 2014 to 2023,with an APC of-10.3％(-13.8％to-6.7％).The incidence of hemorrhagic fever with renal syndrome and typhus showed an overall downward trend,with AAPCs of-10.1％(-15.3％to-4.7％)and-12.3％(-17.6％to-6.7％),respectively.The incidence levels of the other five infectious diseases remained relatively stable overall,with scrub typhus showing a downward trend from 2014 to 2023,whose APC was-10.3％(-17.8％to-2.3％).The top three regions with the highest incidence rates were Linqu(8.62 per 100 000),Qingzhou(6.52 per 100 000),and Zhucheng(6.39 per 100 000).Both dengue fever and malaria cases were imported from abroad,with dengue fever mainly from Southeast Asian countries(6 cases,66.67％)and malaria mainly from Africa(70 cases,95.89％).The male-to-female ratio of cases was 1.69∶1(3 191 males to 1 883 females),with the primary affected age group being 26-75 years old,accounting for 89.59％of the total reported cases.The top three occupational groups affected were farmers(87.45％),workers(3.15％),and those engaged in housework or unemployed(1.93％).Conclusion From 2011 to 2023,the overall incidence of major vector-borne diseases in Weifang shows a declining trend.The incidence exhibits clear seasonality influenced by vector breeding and activity,with the primary affected groups being those with occupational exposure.Targeted prevention and control strategies should be developed based on the characteristics of different diseases.
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