Epidemic characteristics of severe fever with thrombocytopenia syndrome in Tiantai County, Zhejiang Province
10.3760/cma.j.cn231583-20250120-00044
- VernacularTitle:浙江省天台县发热伴血小板减少综合征流行特征分析
- Author:
Haiyan HU
1
;
Xikai CHEN
;
Yingjun CHEN
;
Shanshan CHU
;
Tianlan PANG
;
Luwei WANG
;
Dingling CHEN
;
Yusheng CHEN
Author Information
1. 浙江省天台县疾病预防控制中心检验科，台州 318000
- Publication Type:Journal Article
- Keywords:
Severe fever with thrombocytopenia syndrome;
Dabie bandavirus;
Epidemic characteristics
- From:
Chinese Journal of Endemiology
2025;44(9):752-757
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the epidemic characteristics of severe fever with thrombocytopenia syndrome (SFTS) in Tiantai County Zhejiang Province, and provide a scientific basis for prevention and control of SFTS.Methods:The case data of SFTS in Tiantai County from 2014 to 2024 were collected through the Chinese Disease Control and Prevention Information System, and descriptive epidemic method was employed to analyze its epidemic and clinical characteristics.Results:From 2014 to 2024, a total of 114 SFTS cases were reported in Tiantai County, with an average annual incidence rate of 2.21/100 000. The peak incidence occurred in 2021 (3.40/100 000, 16 cases). Nine cases died, with a mortality rate of 7.89% (9/114). The male-to-female ratio was 1.00∶0.97 (58∶56). The high-risk population was middle-aged and elderly people aged over 50 years old, accounting for 91.23% (104/114). The occupation was mainly farmers, accounting for 92.98% (106/114). The incidence of SFTS had obvious seasonality, with a peak from April to September, accounting for 83.33% (95/114). The average onset date was calculated to be June 25th, and the peak period was from April 19th to August 31st. The distribution of cases was mainly in Tantou Town (34 cases), Shiliang Town (23 cases), Yongxi Township (17 cases), and Pingqiao Town (12 cases), accounting for 75.44% (86/114). From 2014 to 2024, the affected areas had gradually expanded from 1 township/subdistrict to 13 townships/subdistricts, showed a phenomenon of migration from east to west. Among the 114 patients with SFTS, the initial symptom was fever. The proportion of neuropsychiatric symptoms, atrial fibrillation and heart failure in the death group was significantly higher than those in the survival group (χ 2 = 19.24, 16.44, 23.90, P < 0.001). Conclusion:From 2014 to 2024, the incidence of SFTS in Tiantai County fluctuates with obvious seasonal and regional migration characteristics.
