2023年重庆市一起聚餐引起跨区霍乱疫情的调查分析

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Abstract： Objective：To identify the cause of cholera outbreak and provide reference for the handling of the cholera epidemic.Method： Through on-site epidemiological investigation，hygiene investigation and laboratory testing，the suspicious food and the dangerous links of contamination were identified.Result： There was 1 confirmed case and 1 asymptomatic carrier in this epidemic. There were no deaths. The infection rate was 0.67% .The positive rate of population samples was 1.46% ，that of environmental samples was 4.80% ，and that of food samples was 2.44% Among them，Vibrio cholerae was detected in1 sample of the same batch of soft-sheled turtles froma meal and 2 samples of the environment where the soft-shelled turtles were stored. Conclusion：This epidemic is caused by a dinerparty.The possblecauseof the disease mightbe thecontaminationof tablewareorfoodbysoft-shelled turtles. In the future，relevant departments should strengthen the hygiene guidanceand managementofrural dinners，enhance the coordination between medical treatment and prevention as wellas regional collaboration， intensify monitoring， early warning and risk assessment，and strengthen laboratory construction todiagnose and handle cholera epidemics in a timely and rapid manner.

Keywords： O139 serogroup Vibrio cholerae; banquet; aquatic products; infectious disease investigation

霍乱是由 ΔO1 或 O139 血清群霍乱弧菌引起的急性肠道传染病，是我国法定甲类传染病之一[1-3]，呈现出发病急、传播快、波及范围广、能引起大范围乃至世界性大流行等特征。（剩余5136字）