2016-2019年北京市通州区食源性疾病监测中致泻性大肠埃希菌流行特征分析

目的 了解北京市通州区食源性疾病监测病例中致泻性大肠埃希菌(diarrhoeagenic Escherichia coli,DEC)流行特征,为DEC相关食源性疾病的防控提供参考依据.方法 对2016-2019年北京市通州区食源性疾病主动监测的1 675例患者的粪便标本进行DEC菌株分离与鉴定,对DEC感染病例流行特征...

Epidemic characteristics of diarrhoeagenic Escherichia coli in foodborne disease surveillance in Tongzhou District of Beijing, 2016-2019

Objective To understand the epidemic features of diarrhoeagenic Escherichia coli (DEC) in foodborne diseasesurveillance cases in Tongzhou District, Beijing, and to provide references for prevention and control of DEC related foodborne diseases. Methods DEC strains were isolated and identified from stool samples of 1,675 patients actively monitored forfoodborne diseases in Tongzhou District, Beijing from 2016 to 2019, and the epidemiological characteristics of DEC infection cases were analyzed. Results The overall detection rate of DEC was 12.96%, and the dominant bacterial group was enteroaggregative Escherichia coli (EAEC), accounting for 51.61% (112/217). Over time, the overall DEC detection rate increased year by year, with July and August being the peak months for DEC detection. There was no gender difference in DEC infection cases. DECinfection rate in urban areas was higher than that in townships. The total infection rate of DEC in patients aged ≤ 3 years was the highest (14.20%). The group aged ≥ 60 years showed a high incidence of enterotoxigenicEscherichia coli (ETEC) infection (4.94%), and the age difference was statistically significant. Meat and meat products were the main food category of suspected food exposure in the DEC cases, accounting for 28.65%. Conclusion The dominant bacteria species found in DEC in Tongzhou District from 2016 to 2019 was EAEC. The months detected with the highest incidence were July-August. There were differences in the age and residence among the infected cases. Meat and meat products were the main exposed food. Surveillance should be strengthened continuously.