Objective To analyze the epidemiological characteristics of dengue fever in Jiangxi province,China from 2011 to 2019, and to provide a theoretical basis for formulating prevention and control strategies against dengue fever in Jiangxi province. Methods Descriptive epidemiological method was used to analyze the monitoring data of dengue fever in Jiangxi province from 2011 to 2019. The Chi-square test and Mann-Whitney U test were used to compare data differences. Joinpoint software was employed to perform trend analysis. Results From 2011 to 2019, a total of 1 352 cases of dengue fever were reported in Jiangxi province,including 250 (18.49%) imported cases and 1 102 (81.51%) local cases. The imported cases were reported mainly from June to October, while the local cases from August to October. Among all patients,there were 707 male and 645 female patients, with a male-to-female ratio of 1.09:1. The male-to-female ratio in the imported cases (3.24:1) was significantly higher than that in the local cases (0.88:1) (χ2=25.927, P<0.001). The patients were mostly aged between 30 and 69 years, with a median age of 45 years. The imported cases had a significantly younger median age than the local cases (35 vs. 48 years, Z=-10.304, P<0.001). Most of the cases were engaged in farming,housework or unemployment,and commercial service,accounting for 71.97% of the total cases. The difference in occupational distribution between the imported cases and local cases was statistically significant (χ2=716.261, P<0.001). The total cases involved 84 counties or districts in 11 cities with subordinate districts across Jiangxi province,and local cases were reported in 23 counties or districts in 7 cities with subordinate districts. The median time interval from onset to diagnosis was 5 days (interquartile range:3 to 7 days;range:the day of onset to 71 days). The time from onset to diagnosis was longer in the imported cases than in the local cases. Of the 250 imported cases,55 were imported from within China,with the most cases from Guangdong province (67.27%);and 195 were imported from abroad,with the most cases from Cambodia (65.64%). Conclusion The epidemic trend of dengue fever in Jiangxi province is on the rise, imposing an increasing challenge to the prevention and control of dengue fever. Relevant control measures should be strengthened to prevent a wider outbreak.
XIA Guang-hui, TANG Song, YANG Fu-qiang, ZONG Jun, PAN Huan-hong
. Epidemiological characteristics of dengue fever in Jiangxi province,China,2011-2019[J]. Chinese Journal of Vector Biology and Control, 2022
, 33(3)
: 400
-404
.
DOI: 10.11853/j.issn.1003.8280.2022.03.016
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