Epidemiological characteristics of brucellosis in Jiaxing City from 2010 to 2021
XIANG Zelin1, GU Weiling2, FU Xiaofei1, QI Yunpeng1, ZHA Yiwei1, LIU Yang1, LIU Yanqing1, GUO Feifei1, YAN Yong2, ZHOU Wanling1
1. Department of Communicable Disease Control and Prevention, Jiaxing Center for Disease Control and Prevention, Jiaxing, Zhejiang 314050, China; 2. Jiaxing Center for Disease Control and Prevention, Jiaxing, Zhejiang 314050, China
Abstract：Objective To investigate the epidemiological characteristics of human brucellosis in Jiaxing City from 2010 to 2021, so as to provide insights into the development of the brucellosis control strategy. Methods The epidemiological and clinical data of brucellosis patients and epidemiological data of brucellosis outbreaks in Jiaxing City from 2010 to 2021 were collected from Chinese Disease Control and Prevention Information System, and the epidemiological features and outbreaks of brucellosis were analyzed descriptively. Results Totally 160 brucellosis patients were reported in Jiaxing City from 2010 to 2021, and the incidence of brucellosis appeared a tendency towards a rise (χ2trend=28.564, P=0.002), with annual mean incidence of 0.29/105. No deaths due to brucellosis occurred in Jiaxing City from 2010 to 2021. Brucellosis cases were reported each month, which were concentrated in the first and second quarters, and the greatest number was seen in May (27 cases, 16.88%). The brucellosis cases were predominantly reported in Tongxiang City (114 cases, 71.25%), and 75.00% were male (120 cases) and 70.63% were occupational populations (113 cases). The patients had a median (interquartile range) age of 57 (12) years at onset, and the median duration (interquartile range) from onset to definitive diagnosis was 18 (28) days. The clinical manifestations mainly included fever and weakness, and a total of 18 Brucella melitensis isolates and one B. bovis isolate were cultured. Conclusions The incidence of brucellosis was rising in Jiaxing City from 2010 to 2021. The brucellosis patients were predominantly reported in Tongxiang City in the first and second quarters, and young, middle-aged men and occupational populations were at a high risk of brucellosis.
