Epidemiological characteristics of dengue fever in Fujian Province,2009-2023
Objective To analyze the incidence trend and epidemiological characteristics of dengue fever in Fujian Province from 2009 to 2023,identify the high-incidence population and hotspot areas,and a scientific basis for formulating targeted prevention and control measures.Methods The surveillance data of dengue fever during 2009-2023 in Fujian Province were obtained from the National Disease Reporting Information System and analyzed using descriptive epidemiological methods,and the spatial autocorrelation analysis of dengue fever incidence at county/district levels was performed with ArcGlS 10.8.Results A total of 3 586 cases of dengue fever were reported in Fujian Province from 2009 to 2023,with an average annual incidence rate of 0.61/100 000,showing an overall increasing trend year by year(Z=18.35,P<0.001).Among them,there were 2 362 local cases and 1 224 imported cases,with a local/imported ratio of 1.93∶1(2 362/1 224).The local cases were mainly distributed in Fuzhou,Putian,and Nanping,accounting for 87.81%(2 074/2 362).The imported cases were mainly distributed in Quanzhou,Fuzhou,and Xiamen,accounting for 72.55%(888/1 224).The local/imported ratio in Fuzhou,Nanping,and Putian was 6.20∶1(1 557/251),3.92∶1(145/37),and 3.32∶1(372/112),respectively,all significantly higher than the provincial average level.The spatial distribution of the local cases showed a clustered pattern,with 12 hotspots of incidence,all located in the counties and districts under the jurisdiction of Fuzhou.The onset of the disease had obvious seasonality:imported cases from other countries or regions mainly occurred from July to September(accounting for 45.73%,519/1 135),imported cases from other provinces mainly occurred from August to November(accounting for 93.25%,83/89),and local cases mainly occurred from August to October(accounting for 97.50%,2 303/2 362).The gender ratio for local cases was 0.88∶1,and for imported cases,it was 3.04∶1.The average age of onset for local cases was 48 years old(Q1=32 years old,Q3=62 years old),while the average age for imported cases was 35 years old(Q1=28 years old,Q3=44 years old).Conclusions From 2009 to 2023,the dengue fever epidemic in Fujian Province showed a continuous upward trend,with spatiotemporal clustering of incidence.Therefore,prevention and control measures should be strengthened in key areas and populations during the high-incidence season.
Dengue feverepidemiological characteristichotspot analysisFujian Province
NETL
NSTL
万方数据
