韩国家禽屠宰场沙门氏菌的特征:屠宰过程中汤普森沙门氏菌 ST292 的携带传播。

IF 1.5 3区 农林科学 Q2 VETERINARY SCIENCES
Yewon Cheong, Jun Bong Lee, Se Kye Kim, Jang Won Yoon
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引用次数: 0

摘要

重要性:世界各地不断有报告称爆发与禽肉有关的沙门氏菌疫情。因此,屠宰场禽肉的沙门氏菌污染是减少人类疾病爆发的关键控制点之一:本研究考察了韩国整个屠宰过程中沙门氏菌的携带污染情况:从 2018 年到 2019 年,从分布在全国的 9 个屠宰场收集了 1,097 份样本。如前所述,利用 invA 基因特异性聚合酶链反应鉴定了 177 株沙门氏菌分离物。对分离菌株的血清型、系统发育和抗菌药耐药性进行了研究:结果:在 117 个分离株中,93 个被分型为姆班达卡沙门氏菌(36 个,30.8%)、汤普森沙门氏菌(33 个,28.2%)和 Infantis 沙门氏菌(24 个,20.5%)。有趣的是,等位基因分析表明,所有姆班达卡沙门氏菌分离物都属于序列类型(ST)413,而所有汤普森沙门氏菌分离物都是 ST292。此外,几乎所有属于 ST292 的 S. Thompson 分离物(97.0%,32/33 个分离物)都具有多重耐药性,并拥有主要的毒力基因,其产物是完全毒力所必需的。这两种血清型在整个屠宰过程中分布广泛。脉冲场凝胶电泳分析表明,7 种 S. Infantis 的系统发育相关性为 100%,表明它们在屠宰过程中是按顺序传播的:本研究为沙门氏菌在屠宰过程中的携带传播提供了更多证据。ST292 S. Thompson 是一种潜在的沙门氏菌致病克隆,可能与韩国爆发的食源性疾病有关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characterization of Salmonella species from poultry slaughterhouses in South Korea: carry-over transmission of Salmonella Thompson ST292 in slaughtering process.

Importance: Salmonella outbreaks linked to poultry meat have been reported continuously worldwide. Therefore, Salmonella contamination of poultry meats in slaughterhouses is one of the critical control points for reducing disease outbreaks in humans.

Objective: This study examined the carry-over contamination of Salmonella species through the entire slaughtering process in South Korea.

Methods: From 2018 to 2019, 1,097 samples were collected from the nine slaughterhouses distributed nationwide. One hundred and seventeen isolates of Salmonella species were identified using the invA gene-specific polymerase chain reaction, as described previously. The serotype, phylogeny, and antimicrobial resistance of isolates were examined.

Results: Among the 117 isolates, 93 were serotyped into Salmonella Mbandaka (n = 36 isolates, 30.8%), Salmonella Thompson (n = 33, 28.2%), and Salmonella Infantis (n = 24, 20.5%). Interestingly, allelic profiling showed that all S. Mbandaka isolates belonged to the lineage of the sequence type (ST) 413, whereas all S. Thompson isolates were ST292. Moreover, almost all S. Thompson isolates (97.0%, 32/33 isolates) belonging to ST292 were multidrug-resistant and possessed the major virulence genes whose products are required for full virulence. Both serotypes were distributed widely throughout the slaughtering process. Pulsed-field gel electrophoretic analysis demonstrated that seven S. Infantis showed 100% identities in their phylogenetic relatedness, indicating that they were sequentially transmitted along the slaughtering processes.

Conclusions and relevance: This study provides more evidence of the carry-over transmission of Salmonella species during the slaughtering processes. ST292 S. Thompson is a potential pathogenic clone of Salmonella species possibly associated with foodborne outbreaks in South Korea.

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来源期刊
Journal of Veterinary Science
Journal of Veterinary Science 农林科学-兽医学
CiteScore
3.10
自引率
5.60%
发文量
86
审稿时长
1.3 months
期刊介绍: The Journal of Veterinary Science (J Vet Sci) is devoted to the advancement and dissemination of scientific knowledge concerning veterinary sciences and related academic disciplines. It is an international journal indexed in the Thomson Scientific Web of Science, SCI-EXPANDED, Sci Search, BIOSIS Previews, Biological Abstracts, Focus on: Veterinary Science & Medicine, Zoological Record, PubMed /MEDLINE, Index Medicus, Pubmed Central, CAB Abstracts / Index Veterinarius, EBSCO, AGRIS and AGRICOLA. This journal published in English by the Korean Society of Veterinary Science (KSVS) being distributed worldwide.
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