石亚锋, 张建群, 符凌辉, 黄邵军, 罗学辉. 2015-2020年浙江省余姚市沙门菌感染流行特征分析[J]. 疾病监测, 2023, 38(2): 181-186. DOI: 10.3784/jbjc.202201130688
引用本文: 石亚锋, 张建群, 符凌辉, 黄邵军, 罗学辉. 2015-2020年浙江省余姚市沙门菌感染流行特征分析[J]. 疾病监测, 2023, 38(2): 181-186. DOI: 10.3784/jbjc.202201130688
Shi Yafeng, Zhang Jianqun, Fu Linghui, Huang Shaojun, Luo Xuehui. Epidemiological characteristics of Salmonella infection in Yuyao, Zhejiang, 2015–2020[J]. Disease Surveillance, 2023, 38(2): 181-186. DOI: 10.3784/jbjc.202201130688
Citation: Shi Yafeng, Zhang Jianqun, Fu Linghui, Huang Shaojun, Luo Xuehui. Epidemiological characteristics of Salmonella infection in Yuyao, Zhejiang, 2015–2020[J]. Disease Surveillance, 2023, 38(2): 181-186. DOI: 10.3784/jbjc.202201130688

2015-2020年浙江省余姚市沙门菌感染流行特征分析

Epidemiological characteristics of Salmonella infection in Yuyao, Zhejiang, 2015–2020

  • 摘要:
      目的  了解2015—2020年浙江省余姚市沙门菌感染季节性、人群分布和暴露食品状况,为采取防控措施提供科学依据。
      方法  采集哨点医院(余姚市妇幼保健院)2015—2020年食源性疾病患者的粪便或肛拭子样品共2104份进行细菌培养,并对分离的沙门菌进行血清学分型,采用圆分布法分析沙门菌感染的季节性,描述性分析沙门菌感染病例的性别、年龄、职业等分布情况,并对暴露食品进行统计分析。
      结果  共检出234株沙门菌,年平均检出率为11.12%。 234株沙门菌分为36个血清型,以鼠伤寒沙门菌(38.89%)和肠炎沙门菌(11.97%)为主。 圆分布法分析显示,7月15日为检出高峰日,每年5月进入检出高峰期,7月达顶峰,一直持续到9月,存在明显季节性。 沙门菌检出率最高的年龄组为1~5岁(18.49%),其次为0~1岁组(16.51%)和5~10岁组(10.64%)。 暴露食品中蛋与蛋制品、粮食类及其制品、水果类及其制品沙门菌检出率较高(P<0.05)。
      结论  余姚市食源性沙门菌的检出率较高,存在明显的季节性,婴幼儿和学龄前儿童是主要检出人群,各类暴露食品中均有检出,要加强预防食品被沙门菌污染。

     

    Abstract:
      Objective  To understand the seasonality, population distribution and pathogenic food of salmonella infection in Yuyao from 2015 to 2020, and provide scientific evidence for the prevention and control of salmonellosis.
      Methods   A total of 2104 stool samples or anal swabs samples were collected from the patients with foodborne diseases in Yuyao Maternity and Child Healthcare Center (a sentinel hospital) from 2015 to 2020 for the culture and isolation of Salmonella , and the isolated Salmonella strains were serotyped. Circular distribution method was used to analyze the seasonality of Salmonella infection. The gender, age and population distribution of Salmonella infection were descripted, and pathogenic food were identified.
      Results  A total of 234 Salmonella strains were detected, the averages annual positive rate was 11.12%. The Salmonella detected belonged to 36 serotypes. Salmonella Typhimurium(38.89%) and Salmonella Enteritidis (11.97%) were predominant. Circular distribution analysis indicated that the annual detection rate peaked during May-July and high detection lasted to September. The peak day was 15th July from the analysis of circular distribution.The detection rate was highest in 1–5 years old group (18.49%), followed by 0–1 year old group (16.51%), 5–10 years old groups (10.64%). The detection rates of Salmonella were high in eggs or egg product, grain or grain product, fruit or fruit product (P<0.05).
      Conclusion  The detection rates of Salmonella in food was high in Yuyao. The seasonality of Salmonella detection was obvious. Infants and preschool aged children were the susceptible population to Salmonella infection. Salmonella was detected in all main foods. It is necessary to strengthen the prevention of food contamination by Salmonella.

     

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