An investigation of a human brucellosis outbreak in Qixia City, Yantai City, Shandong Province
10.3760/cma.j.cn231583-20230825-00040
- VernacularTitle:山东省烟台市栖霞市1起人间布鲁氏菌病暴发疫情调查分析
- Author:
Xiuwei LIU
1
;
Jingtao LIN
;
Shuting HOU
;
Nannan ZHANG
;
Shaobo LYU
;
Tao LIU
Author Information
1. 山东省烟台市疾病预防控制中心传染病防制科，烟台 264003
- Publication Type:Journal Article
- Keywords:
Brucellosis;
Epidemiology;
Outbreak;
Exposure factors
- From:
Chinese Journal of Endemiology
2024;43(12):1017-1020
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate a human brucellosis outbreak in a breeding farm in Qixia City, Yantai City, Shandong Province, and analyze the main exposure factors.Methods:Through the Infectious Disease Report Information Management System of the China Disease Prevention and Control Information System, information on a human brucellosis outbreak in a breeding farm in Qixia City in 2019 was queried. The data was sourced from the Qixia Center for Disease Control and Prevention, and a retrospective analysis was conducted on the epidemic situation, case situation, epidemiological investigation results, etc.Results:A total of 7 cases were detected in this outbreak, including 6 males and 1 female. The age range was 49 to 63 years old, with a median of 51 years old. There were 2 breeding workers, 1 management personnel, 3 veterinarians, and 1 sheep manure processing worker. The onset time was concentrated in May and June. The main clinical manifestations were fever (4/7), fatigue (4/7), muscle and joint pain (4/7), and hyperhidrosis (3/7). Serological testing was performed on 846 sheep in the breeding farm, among which 83 were positive for Brucella, the positive rate was 9.81% (83/846). The infected sheep with unknown quarantine status were the main source of infection. High-risk exposure behaviors include not taking effective protective measures in sheep feeding, delivery, breeding, treatment, waste disposal, etc. Conclusion:The source of infection for this epidemic is infected sheep with unknown quarantine status, and the main exposure factor is personal unprotected contact with infected sheep.
