Abstract:
Objective To analyze the incidence, diagnosis and infection source of human brucellosis in Beijing, and provide evidence for the prevention and control of human brucellosis.
Methods Epidemiological investigations were conducted for the brucellosis cases reported in Beijing from 2018 to 2022. Descriptive epidemiology methods were used to analyze the incidence, diagnosis and infection sources of human brucellosis in Beijing.
Results A total of 452 human brucellosis cases were reported in Beijing from 2018 to 2022. The average annual incidence rate was 0.21/100 000. The incidence rate was higher in men than women (χ2=106.294, P<0.001). Most cases occurred between March and August with peak in May, and the incidence decreased in autumn and winter. Symptoms in general system (82.22%), osteoarticular system (57.27%) and endocrine system (36.26%) were most common, including fever (72.98%), muscle and joint pain (57.27%), weakness (48.50%) and hidrosis (36.26%). The median of interval between onset and diagnosis was 31 day. Acute cases accounted for 81.96%. The infection routes were mainly feeding and trading cattle and sheep (42.48%).
Conclusion Most human brucellosis cases were acute ones and occurred in spring and summer in Beijing. The infections mainly occurred in the process of feeding and trading cattle and sheep. It is necessary to conduct consecutive health education in populations with occupational exposure to Brucella and improve the diagnosis of human brucellosis in medical institutions. Multi-sectoral collaboration is important for the prevention and control of human brucellosis.
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