Epidemiological and clinical characteristics of leptospirosis in Wenzhou City from 2019 to 2023
10.3760/cma.j.cn231583-20250113-00028
- VernacularTitle:2019—2023年温州市钩端螺旋体病流行病学及临床特征分析
- Author:
Xiaoyu SUN
1
;
Junqi YANG
1
;
Jiangfeng LI
1
;
Zhaorong NI
1
;
Huasen XIE
1
Author Information
1. 温州市疾病预防控制中心（温州市卫生监督所），温州 325001
- Publication Type:Journal Article
- Keywords:
Leptospira;
Epidemiology;
Surveillance
- From:
Chinese Journal of Endemiology
2025;44(11):906-912
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the epidemiological and clinical characteristics of leptospirosis in Wenzhou City, and to provide a scientific basis for formulating prevention and control strategies of leptospirosis in Wenzhou City.Methods:Information on leptospirosis case from 2019 to 2023 was collected from the China Information System for Disease Control and Prevention. Descriptive epidemiological methods were used to analyze the three-dimensional distribution and clinical manifestations of leptospirosis.Results:From 2019 to 2023, the annual average incidence rate of leptospirosis in Wenzhou City was 0.43/100 000, and the annual average mortality was 0.01/100 000. The incidence rate was the highest in 2021 (0.74/100 000), and there was a statistically significant difference in the incidence rate over the five years ( χ2 = 35.48, P < 0.001). Cases were reported in all regions in Wenzhou City except for Dongtou District and Longgang City, with Yongjia County had the highest number of cases (114 cases). The impact rate of streets/townships was 35.14% (65/185), among them Yongjia County had the highest impact rate of steets/townships (86.36%, 19/22). The onset season was from August to October (88.83%, 159/179), with a male to female ratio of 4.97 ∶ 1.00 (149/30). The age group of 61 - 70 years old was the most affected (39.66%, 71/179), and farmers were the main occupation (70.95%, 127/179). Twenty-six point eighty-two per cent (48/179) of the cases had a clear history of animal contact within one month before onset, and 68.16% (122/179) had a history of contact with contaminated water. The main clinical type was influenza-typhoid type (23.46%, 42/179), with the main clinical manifestations being fever (84.92%, 152/179), chills (55.87%, 100/179), and fatigue (62.57%, 112/179). Twelve point twenty-nine per cent 12.29% (22/179), 8.38% (15/179), and 22.91% (41/179) of cases showed conjunctival congestion, lymph node enlargement, and gastrocnemius muscle tenderness, respectively. Clinical outcomes showed that 73.74% (132/179) of the cases recovered or improved, and 3 cases died. Conclusions:From 2019 to 2023, the overall prevalence of leptospirosis in Wenzhou City is at a low level, but there are deaths that need to be taken seriously. In order to control the disease, continuous monitoring should be carried out, health education for relevant populations should be strengthened, and the risk of leptospirosis should be reduced.
