Tracking Extended-spectrum β-lactamase-Producing and Colistin-Resistant Escherichia Coli in Pig Abattoirs: Impacts on Food Safety.

IF 1.9 2区 农林科学 Q3 FOOD SCIENCE & TECHNOLOGY
Imporn Saenkankam, Prasert Apiwatsiri, Natthapong Supimon, Waree Niyomtham, David J Hampson, Nuvee Prapasarakul
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Abstract

The ongoing increase in antimicrobial resistance (AMR) in Escherichia coli, particularly the emergence of extended-spectrum β-lactamase (ESBL)-producing and colistin-resistant strains in livestock, is a significant public health concern. The effectiveness of pig abattoir management, specifically through Hazard Analysis and Critical Control Points (HACCP) protocols, in reducing antimicrobial-resistant contamination continues to be scrutinized. This study investigated the prevalence, characteristics, and critical contamination points of ESBL-producing E. coli (ESBL-Ec) and colistin-resistant ESBL-Ec across the slaughtering processes in two pig abattoirs in Thailand-one operating under HACCP standards and the other certified solely under Good Manufacturing Practices. A higher prevalence of ESBL-Ec was found in the non-HACCP facility (67.98%) compared with the HACCP facility (52.04%), especially in pig carcasses. Skin and carcass washing in HACCP facilities effectively decreased bacterial contamination. Conversely, non-HACCP facilities should implement measures such as cleaning skin with disinfectants at the lairage, regularly monitoring and adjusting the final washing protocol, and strict sterilization of chopping plates to effectively control contamination points. Most ESBL-Ec isolates were multidrug-resistant and carried blaCTX-M group 1 or group 9 genes. Additionally, 12.6% of these isolates were resistant to colistin, with the mcr-1 gene predominantly identified. ST10 was the dominant clone of mcr-carrying ESBL-Ec across various slaughtering stages and sample types. These findings highlight the importance of implementing HACCP protocols to reduce contamination, enhance food safety, and mitigate public health risks. Ongoing AMR monitoring to find critical points along the slaughtering process is essential to reduce sources of AMR transmission to consumers.

猪屠宰场产β-内酰胺酶和耐粘菌素大肠杆菌的广谱追踪:对食品安全的影响
大肠杆菌中抗菌素耐药性(AMR)的持续增加,特别是牲畜中产生广谱β-内酰胺酶(ESBL)和耐粘菌素菌株的出现,是一个重大的公共卫生问题。猪屠宰场管理的有效性,特别是通过危害分析和关键控制点(HACCP)协议,在减少抗菌素耐药性污染方面继续受到审查。本研究调查了泰国两个屠宰场屠宰过程中产生esbl的大肠杆菌(ESBL-Ec)和抗粘菌素的ESBL-Ec的流行程度、特征和关键污染点,其中一个屠宰场在HACCP标准下运行,另一个在良好生产规范下运行。非HACCP设施中ESBL-Ec的患病率(67.98%)高于HACCP设施(52.04%),特别是在猪尸体中。在HACCP设施中清洗皮肤和胴体可有效减少细菌污染。反之,非haccp设施应实施在猪场用消毒剂清洁皮肤、定期监测和调整最终洗涤方案、对菜板严格消毒等措施,有效控制污染点。大多数ESBL-Ec菌株具有多重耐药,携带blaCTX-M第1组或第9组基因。此外,12.6%的分离株对粘菌素耐药,主要鉴定出mcr-1基因。在不同屠宰阶段和样品类型中,ST10是携带mcr的ESBL-Ec的优势克隆。这些发现强调了实施HACCP协议对于减少污染、加强食品安全和减轻公共卫生风险的重要性。持续监测抗菌素耐药性以发现屠宰过程中的关键点,对于减少抗菌素耐药性向消费者传播的来源至关重要。
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来源期刊
Foodborne pathogens and disease
Foodborne pathogens and disease 医学-食品科技
CiteScore
5.30
自引率
3.60%
发文量
80
审稿时长
1 months
期刊介绍: Foodborne Pathogens and Disease is one of the most inclusive scientific publications on the many disciplines that contribute to food safety. Spanning an array of issues from "farm-to-fork," the Journal bridges the gap between science and policy to reduce the burden of foodborne illness worldwide. Foodborne Pathogens and Disease coverage includes: Agroterrorism Safety of organically grown and genetically modified foods Emerging pathogens Emergence of drug resistance Methods and technology for rapid and accurate detection Strategies to destroy or control foodborne pathogens Novel strategies for the prevention and control of plant and animal diseases that impact food safety Biosecurity issues and the implications of new regulatory guidelines Impact of changing lifestyles and consumer demands on food safety.
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