Epidemiological characteristics of dengue fever in Fujian Province, 2009-2023
- Author:
XIE Zhonghang
;
WU Shenggen
;
ZHU Hansong
- Publication Type:Journal Article
- Keywords:
Dengue fever;
epidemiological characteristic;
hotspot analysis;
Fujian Province
- From:
China Tropical Medicine
2024;24(8):942-
- CountryChina
- Language:Chinese
-
Abstract:
Abstract: 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.
- Full text:202511071054259439610.Epidemiological characteristics of dengue fever in Fujian Province, 2009-2023.pdf
