2015-2020年江苏省食源性疾病主动监测沙门氏菌情况分析

Analysis of salmonella in active surveillance of foodborne diseases in Jiangsu Province in 2015-2020

目的研究2015—2020年江苏省食源性疾病主动监测中沙门氏菌的感染率、血清型分布、病因性食品来源,以了解江苏省食源性疾病中沙门氏菌的感染情况。方法从江苏省13个设区市的哨点医院中,采集符合病例定义的标本68656份,检测分离出1920株沙门氏菌,进行了血清学分型、发病季节变化趋势、患者性别、年龄和相关病因性食品溯源等研究,并对结果进行了统计分析。结果1920株沙门氏菌广泛分布于124个血清型,菌型呈现多态性分布,以鼠伤寒沙门氏菌(占比25.10%)、肠炎沙门氏菌(占比23.49%)为主导菌株;发病季节以夏季为主;发病年龄以3岁以下婴幼儿为主;男性病例占比更高;可疑病因性食品以肉与肉制品(占比17.64%)、乳与乳制品(占比11.98%)为主。结论相关部门应加大对肉类和乳类食品的市场监管力度,持续做好对沙门氏菌疾病的主动监测,提高食品安全隐患的早期识别、预警和控制能力,减少食源性疾病的发生。

Objective To study the infection rate,serotype distribution and etiological food of salmonella in active surveillance of foodborne diseases in Jiangsu Province from 2015 to 2020,so as to understand the infection of salmonella in foodborne diseases in Jiangsu Province.Methods A total of 68656 cases were collected from sentinel hospitals in 13 districts and cities in Jiangsu Province,and 1920 strains of salmonella were detected and isolated.The serological typing,seasonal variation trend,patient gender,age and traceability of etiological food were studied and statistically analyzed.Results The 1920 salmonella strains were widely distributed in 124 serotypes,and the serotypes showed polymorphic distribution,with salmonella typhimurium(accounting for 25.10%)and salmonella enteritidis(accounting for 23.49%)as the dominant strains.The season of onset was mainly summer.The onset age was mainly infants under 3 years old.The proportion of male cases was higher.Meat and meat products(accounting for 17.64%)and milk and dairy products(accounting for 11.98%)were the main type of suspected pathogenic foods.Conclusion Relevant departments should strengthen the market supervision of meat and dairy foods,continue to actively monitor salmonella diseases,improve the ability of early identification,early warning and control of food safety hazards,and reduce the occurrence of foodborne diseases.