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Peng S, Xiong H, Lu J, Luo F, Liu C, Zhou H, Tong W, Xia Z, Liu D. Epidemiological and Whole Genome Sequencing Analysis of Restaurant Salmonella Enteritidis Outbreak Associated with an Infected Food Handler in Jiangxi Province, China, 2023. Foodborne Pathog Dis 2024; 21:316-322. [PMID: 38354216 DOI: 10.1089/fpd.2023.0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024] Open
Abstract
In China, Salmonella is one of the most frequent causes of bacterial gastroenteritis, and food handlers in restaurants as an important contaminated source were rarely reported. In May 2023, an outbreak of Salmonella enterica serovar Enteritidis infection in a restaurant in Jiangxi Province, China, was investigated. Cases were interviewed. Stool samples from cases, anal swabs from restaurant employees, suspicious raw food materials, and semifinished food were collected and examined. Pulsed-field gel electrophoresis (PFGE) and whole genome sequencing (WGS) were performed to determine the relatedness of the pathogen isolates. Antimicrobial resistance genes and virulence genes of isolates were analyzed by WGS. The antimicrobial profile of the isolates was detected by broth microdilution, which involved 20 different antibiotics. Among the 31 patrons, 26 showed gastrointestinal symptoms. Five Salmonella Enteritidis strains were isolated from patients (2), semifinished food (2), and food handler (1). The results of PFGE and single-nucleotide polymorphism showed that these five isolates were identical clones. These findings demonstrated that this outbreak was a restaurant Salmonella Enteritidis outbreak associated with an infected food handler. The rates of resistance to nalidixic acid and colistin and intermediate resistance to ciprofloxacin were 100%, 80%, and 100%, respectively. These outbreak isolates harbored point mutation gyrA p.D87G. The cause of inconsistency between the genotype and phenotype of resistance was deeply discussed. A total of 107 virulence genes were found in each isolate, with many being associated with Salmonella pathogenicity island (SPI)-1 and SPI-2. As an overlooked contamination source, infected food handlers can easily cause large-scale outbreaks. This outbreak highlighted that the government should enhance the training and supervision of food hygiene and safety for food handlers to prevent foodborne outbreaks.
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Affiliation(s)
- Silu Peng
- Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, China
| | - Huomei Xiong
- Jiujiang Center for Disease Control and Prevention, Jiujiang, China
| | - Jun Lu
- Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, China
| | - Fei Luo
- Jiujiang Center for Disease Control and Prevention, Jiujiang, China
| | - Chengwei Liu
- Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, China
| | - Houde Zhou
- Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, China
| | - Wei Tong
- Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, China
| | - Zhilu Xia
- Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, China
| | - Daofeng Liu
- Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, China
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Cheng H, Zhao G, Xu Y, Zhao J, Huang X, Zhang X, Liu N, Wang L, Liu J, Wang J. Quantitative Risk Assessment of Salmonella in Breaded Pork Products in China. Foodborne Pathog Dis 2024; 21:109-118. [PMID: 38011665 DOI: 10.1089/fpd.2023.0077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023] Open
Abstract
Pork products were the most common media of Salmonella in China, breaded pork products as a very popular meat presently, whose Salmonella risk should be drawn to attention. Given that quantitative risk assessment is a more scientific method for risk evaluation, a quantitative risk assessment model of Salmonella in breaded pork products was first constructed from processing to consumption, and was used for assessing the risk and the effective interventions in this study. The data of Salmonella contamination in breaded pork products during processing were obtained from the actual detection data of samples from a representative meat processing plant. With combining the predictive microbial modeling and dose-response relationship, the risk of Salmonella in breaded pork products was charactered, and the probability of Salmonella infection per meal was found to be 5.585 × 10-9. Based on the results of sensitivity analysis, the curing and seasoning process was found to be the key control point for Salmonella contamination during the processing, and consumer behavior was the key control point affecting the probability of Salmonella infection from processing to consumption. The model was also applied for assessing the effectiveness of risk interventions, and among the nine interventions given, control of thawing temperature before cooking such as microwave thawing could reduce the risk of infection by 30.969-fold, while cooking the products thoroughly, Salmonella would not pose a pathogenic hazard to consumers. The model and the assessed results in this study may provide guidance on microbial control in producing process and safety consumption of breaded pork products.
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Affiliation(s)
- Huimin Cheng
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
- Food Processing and Safety, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Ge Zhao
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
- Key Laboratory of Animal Biosafety Risk Prevention and Control (South), Ministry of Agriculture and Rural Affairs, Qingdao, China
| | - Ying Xu
- Food Processing and Safety, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Jianmei Zhao
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Xiumei Huang
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Xiyue Zhang
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Na Liu
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Lin Wang
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Junhui Liu
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Junwei Wang
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
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Zheng C, Zhai Y, Qiu J, Wang M, Xu Z, Chen X, Zhou X, Jiao X. ZntA maintains zinc and cadmium homeostasis and promotes oxidative stress resistance and virulence in Vibrio parahaemolyticus. Gut Microbes 2024; 16:2327377. [PMID: 38466137 PMCID: PMC10936601 DOI: 10.1080/19490976.2024.2327377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 03/04/2024] [Indexed: 03/12/2024] Open
Abstract
Although metals are essential for life, they are toxic to bacteria in excessive amounts. Therefore, the maintenance of metal homeostasis is critical for bacterial physiology and pathogenesis. Vibrio parahaemolyticus is a significant food-borne pathogen that mainly causes acute gastroenteritis in humans and acute hepatopancreatic necrosis disease in shrimp. Herein, we report that ZntA functions as a zinc (Zn) and cadmium (Cd) homeostasis mechanism and contributes to oxidative stress resistance and virulence in V. parahaemolyticus. zntA is remarkably induced by Zn, copper, cobalt, nickel (Ni), and Cd, while ZntA promotes V. parahaemolyticus growth under excess Zn/Ni and Cd conditions via maintaining Zn and Cd homeostasis, respectively. The growth of ΔzntA was inhibited under iron (Fe)-restricted conditions, and the inhibition was associated with Zn homeostasis disturbance. Ferrous iron supplementation improved the growth of ΔzntA under excess Zn, Ni or Cd conditions. The resistance of ΔzntA to H2O2-induced oxidative stress also decreased, and its virulence was attenuated in zebrafish models. Quantitative real-time PCR, mutagenesis, and β-galactosidase activity assays revealed that ZntR positively regulates zntA expression by binding to its promoter. Collectively, the ZntR-regulated ZntA is crucial for Zn and Cd homeostasis and contributes to oxidative stress resistance and virulence in V. parahaemolyticus.
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Affiliation(s)
- Chengkun Zheng
- Jiangsu Key Laboratory of Zoonosis/Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, the Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education, Yangzhou University, Yangzhou, China
| | - Yimeng Zhai
- Jiangsu Key Laboratory of Zoonosis/Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, the Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education, Yangzhou University, Yangzhou, China
| | - Jun Qiu
- Jiangsu Key Laboratory of Zoonosis/Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, the Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education, Yangzhou University, Yangzhou, China
| | - Mengxian Wang
- Jiangsu Key Laboratory of Zoonosis/Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, the Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education, Yangzhou University, Yangzhou, China
| | - Zhengzhong Xu
- Jiangsu Key Laboratory of Zoonosis/Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, the Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education, Yangzhou University, Yangzhou, China
| | - Xiang Chen
- Jiangsu Key Laboratory of Zoonosis/Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Xiaohui Zhou
- School of Public Health and Emergency Management, Southern University of Science and Technology, Shenzhen, China
| | - Xinan Jiao
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, the Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education, Yangzhou University, Yangzhou, China
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Gao Y, Du P, Zhang P, Wang J, Liu Z, Fanning S, Wang Z, Li R, Bai L. Dynamic evolution and transmission of a bla NDM-1-bearing fusion plasmid in a clinical Escherichia coli. Microbiol Res 2023; 275:127450. [PMID: 37454426 DOI: 10.1016/j.micres.2023.127450] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/06/2023] [Accepted: 07/06/2023] [Indexed: 07/18/2023]
Abstract
Plasmids are the main driving forces for the rapid dissemination of blaNDM-1. In recent years, blaNDM-1-carrying fusion plasmids have been frequently reported. However, the evolutionary patterns of blaNDM-1-carrying fusion plasmids remain largely unknown. Herein, we reported a blaNDM-1-bearing fusion plasmid pZX35-269k possessing IncFII and IncA/C2 replicons from clinical ST349 E. coli 13ZX35. The backbone of pZX35-269k was structurally unstable, which was manifested in different types of structural dissociation during conjugation and passage, thereby forming various daughter plasmids. Moreover, the same events were observed in the clinical setting as well. We found that pZX35-269k exhibited highly identical to two plasmids (pZX30-70k and pZX30-192k) in 13ZX30, both of which were isolated from the same hospital. Sequence analysis highlighted that two plasmids in 13ZX30 evolved from pZX35-269k through homologous recombination of a 4856-bp fragment. Collectively, this study confirmed the transmission and structural evolution of a blaNDM-1-bearing fusion plasmid in both laboratory and clinical settings, and provided clear evidence of plasmid spread and evolution in clinical settings. Such versatile plasmids may represent a potential risk for the public health.
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Affiliation(s)
- Yanyun Gao
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu Province, People's Republic of China
| | - Pengcheng Du
- Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, and Beijing Key Laboratory of Emerging Infectious Diseases, Beijing, People's Republic of China
| | - Pei Zhang
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU014) of Chinese Academy of Medical Science, China National Center for Food Safety Risk Assessment, Beijing, People's Republic of China
| | - Juan Wang
- College of Veterinary Medicine, Northwest A&F University, No. 22 Xinong Road, 22, Yangling 712100 Shaanxi, People's Republic of China
| | - Ziyi Liu
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu Province, People's Republic of China
| | - Séamus Fanning
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU014) of Chinese Academy of Medical Science, China National Center for Food Safety Risk Assessment, Beijing, People's Republic of China; UCD-Centre for Food Safety, School of Public Health, Physiotherapy and Sports Science, University College Dublin, Belfield, Dublin D04 N2E5, Ireland
| | - Zhiqiang Wang
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu Province, People's Republic of China
| | - Ruichao Li
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu Province, People's Republic of China.
| | - Li Bai
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU014) of Chinese Academy of Medical Science, China National Center for Food Safety Risk Assessment, Beijing, People's Republic of China.
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Zhao G, Lou Z, Zhu Z, Lai X, Li J, Lou X, Huang L, Chen Q. Epidemiological and molecular evidence of foodborne poisoning outbreak caused by enterotoxin gene cluster-harboring Staphylococcus aureus of new sequence type 7591. Int J Infect Dis 2023; 135:132-135. [PMID: 37619662 DOI: 10.1016/j.ijid.2023.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/06/2023] [Accepted: 08/07/2023] [Indexed: 08/26/2023] Open
Abstract
OBJECTIVES This paper presented a detailed analysis of the epidemiology and molecular characteristics of staphylococcal food poisoning (SFP) that occurred in a hotel in Hangzhou. METHODS A total of 46 guests at the hotel underwent an epidemiological survey. Samples of stool from patients, vomit, swabs from the kitchen, leftover food items, and anal swabs from food handlers were taken and investigated for the presence of potential pathogenic bacteria. Molecular techniques and whole genome sequencing were performed to track the evolution of Staphylococcus aureus associated with the outbreak of SFP. RESULTS Forty-six individuals displayed gastrointestinal symptoms. Seventeen isolates of S. aureus were discovered to carry the seg, sei, sem, sen, seo, and selu genes found in a specific enterotoxin gene cluster (egc) operon, but without the presence of classical enterotoxins such as SEA ∼ SEE. All egc-positive isolates shared identical pulsed-field gel electrophoresis profiles and were classified under new ST7591 (Clonal Complex 72) with identical spa typing t148. In addition, some isolates of S. aureus obtained from food sources sold in Hangzhou over the past 3 years and carrying egc genes were grouped under the ST72 lineage (CC72). Through whole genome sequencing, a strong genetic connection was revealed between these egc-positive isolates and clinical ST72 S. aureus found in China. CONCLUSIONS S. aureus with non-classical egc enterotoxins was suggested to be a potential cause of SFP in humans.
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Affiliation(s)
- Gang Zhao
- Hangzhou Center for Disease Control and Prevention, Hangzhou, China
| | - Zhengqing Lou
- Hangzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhiyong Zhu
- Tonglu Center for Disease Control and Prevention, Hangzhou, China
| | - Xuying Lai
- Tonglu Center for Disease Control and Prevention, Hangzhou, China
| | - Jun Li
- Hangzhou Center for Disease Control and Prevention, Hangzhou, China
| | - Xiuqin Lou
- Hangzhou Center for Disease Control and Prevention, Hangzhou, China
| | - Liming Huang
- Hangzhou Center for Disease Control and Prevention, Hangzhou, China
| | - Qi Chen
- Hangzhou Center for Disease Control and Prevention, Hangzhou, China; Hangzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, China.
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Duan S, Yu Y, Guo Y, Lu D, Li N, Liu Z, Liang J, Jiang Y, Wang S, Fu P, Liu J, Liu H. Epidemiological Evaluation of Bacillus cereus-Induced Foodborne Outbreaks - China, 2010-2020. China CDC Wkly 2023; 5:737-741. [PMID: 37663900 PMCID: PMC10468372 DOI: 10.46234/ccdcw2023.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 08/13/2023] [Indexed: 09/05/2023] Open
Abstract
Introduction Bacillus cereus (B. cereus) is a common gram-positive bacterium that contaminates starch-rich food and can cause outbreaks of foodborne diseases. This study describes the characteristics of outbreaks caused by B. cereus in China during 2010-2020 and explore the possible reasons for changes in the number of outbreaks over time. Results of this analysis can efficiently help guide and allocate public resources to prevent B. cereus-caused foodborne diseases. Methods Descriptive statistical methods were used to analyze the data on B. cereus outbreaks in China during this period. The data were identified and reported at all levels in China through National Foodborne Disease Outbreak Surveillance System. Results From 2010 to 2020, a total of 419 foodborne outbreaks prompted by B. cereus were reported in China, leading to 7,892 cases, 2,786 hospital admissions, and 5 fatalities. The bulk of the outbreaks were recorded in the summer, primarily between May and September. The most recurrent food vehicle was linked with rice or flour-based products, notably those made with rice or fried rice. School canteens bore the brunt of the B. cereus outbreaks. In multifactor outbreaks, food contamination was identified as the most common culprit; while in instances where only one factor contributed, improper storage was most frequently implicated. Conclusion The prevalence of B. cereus outbreaks remained relatively consistent throughout the studied period. Understanding the types of foods, causative factors, and contributing elements leading to B. cereus outbreaks can help inform prevention strategies for foodborne illnesses. The majority of outbreaks were associated with rice- or flour-based foods in school canteens, suggesting contamination and improper storage during food preparation. Consequently, it is essential to prioritize continuous education for canteen staff on food safety, efficacious management, and proper practices. The implementation of comprehensive guidelines, encompassing multiple critical aspects, can potentially reduce the occurrence of B. cereus outbreaks.
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Affiliation(s)
- Shenggang Duan
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China
| | - Yue Yu
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China
| | - Yunchang Guo
- NHC Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU014) of Chinese Academy of Medical Sciences; China National Center for Food Safety Risk Assessment, Beijing, China
| | - Donglei Lu
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China
| | - Ning Li
- NHC Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU014) of Chinese Academy of Medical Sciences; China National Center for Food Safety Risk Assessment, Beijing, China
| | - Zhitao Liu
- Yunnan Provincial Center for Disease Control and Prevention, Kunming City, Yunnan Province, China
| | - Jinjun Liang
- Hunan Provincial Center for Disease Control and Prevention, Changsha City, Hunan Province, China
| | - Yuyan Jiang
- Guangxi Zhuang Autonomous Region Center for Disease Control and Prevention, Nanning City, Guangxi Zhuang Autonomous Region, China
| | - Santao Wang
- Shanxi Provincial Center for Disease Control and Prevention, Taiyuan City, Shanxi Province, China
| | - Ping Fu
- NHC Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU014) of Chinese Academy of Medical Sciences; China National Center for Food Safety Risk Assessment, Beijing, China
| | - Jikai Liu
- NHC Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU014) of Chinese Academy of Medical Sciences; China National Center for Food Safety Risk Assessment, Beijing, China
| | - Hong Liu
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China
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Cheng H, Zhao J, Zhang J, Wang Z, Liu Z, Ma X, Liang J, Li W, Fu P, Yang S, Guo Y. Attribution Analysis of Household Foodborne Disease Outbreaks in China, 2010-2020. Foodborne Pathog Dis 2023; 20:358-367. [PMID: 37506344 DOI: 10.1089/fpd.2022.0070] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023] Open
Abstract
Foodborne diseases have become a serious public health problem worldwide, and foodborne disease outbreaks have placed a heavy disease burden on China. Foodborne disease outbreaks occur most frequently among families in China. The objectives of this study were to analyze the cause of household foodborne disease outbreaks in China from 2010 to 2020 and to identify where preventive measures could be targeted. All data were obtained from the China Foodborne Disease Surveillance System Report. A total of 17,985 outbreaks, which resulted in 73,252 illnesses, 38,829 hospitalizations, and 1269 deaths, were reported in this period. Most household outbreaks of foodborne diseases occurred in May-October, and the highest number occurred in July (3620 outbreaks, 20%). The province with the highest number of outbreaks was Yunnan Province (4829 outbreaks), followed by Hunan Province (2264 outbreaks). The attribution analysis revealed that fungi (mainly poisonous mushrooms) were the most implicated food category, with 8873 (49.3%) cases. The second was poisonous plants and their products, with 1552 (8.6%) cases. Fungi were the primary etiologic agent, with 31,125 illnesses, accounting for 42.5% of the incidents. Inedibility and misuse (9423 outbreaks), unknown origin (2505 outbreaks), and improper processing (2365 outbreaks) were the main contributing factors causing outbreaks of foodborne diseases. The results show that southwest China was a high-risk area for household foodborne diseases. Therefore, public health institutions should strengthen supervision and food safety education of residents to reduce the outbreaks of household foodborne diseases.
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Affiliation(s)
- Han Cheng
- School of Public Health, Weifang Medical University, Weifang, China
| | - Jie Zhao
- School of Public Health, Weifang Medical University, Weifang, China
| | - Jing Zhang
- Weifang Center for Disease Control and Prevention, Shandong, China
| | - Zhiyuan Wang
- School of Public Health, Weifang Medical University, Weifang, China
| | - Zhitao Liu
- Yunnan Center for Disease Control and Prevention, Kunming, China
| | - Xiaochen Ma
- Beijing Center for Disease Control and Prevention, Beijing, China
| | - Jinjun Liang
- Hunan Center for Disease Control and Prevention, Changsha, China
| | - Weiwei Li
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Ping Fu
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Shuxiang Yang
- School of Public Health, Weifang Medical University, Weifang, China
| | - Yunchang Guo
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment, Beijing, China
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Long J, Du G, Chen J, Xie C, Xu J, Yuan J. Bacteria and poisonous plants/fungi were the primary causative hazards of foodborne disease outbreaks: A five-year survey from Guangzhou, Guangdong. Int J Food Microbiol 2023; 400:110264. [PMID: 37267840 DOI: 10.1016/j.ijfoodmicro.2023.110264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 04/17/2023] [Accepted: 05/21/2023] [Indexed: 06/04/2023]
Abstract
The burden of foodborne diseases is of serious concern. More effective and localized intervention policies for outbreak prevention and management are required; however, policy modification is hampered due to a lack of information on the epidemiological characteristics of outbreaks in Guangzhou. We collected data from 182 foodborne disease outbreaks reported in Guangzhou, China from 2017 to 2021 to investigate the epidemiological characteristics and associated factors. Nine outbreaks were serious enough to be labelled as level IV public health emergencies, all of which were associated with canteens. In terms of the number of outbreaks, morbidity and clinical medical needs, bacteria and poisonous plants/fungi were the primary causative hazards of outbreaks, and were found mostly in foodservice establishments (96 %, 95/99) and private homes (86 %, 37/43) respectively. Surprisingly, Vibrio parahaemolyticus was primarily identified in meat and poultry products rather than in aquatic products in these outbreaks. Patient specimens and food samples were among the most common sources of detected pathogens in foodservice establishments and private homes. Cross-contamination (35 %), improper processing (32 %) and equipment/utensil contamination (30 %) were the top three risk factors for outbreaks related to foodservice establishments, while accidental ingestion of poisonous food (78 %) was the most common risk factor in private homes. Based on the above epidemiological characteristics of the outbreaks, key foodborne disease intervention policy points should be to raise public awareness of harmful food and avoid risk behaviour, improve handler hygiene training, and strengthen the hygiene management and supervision of kitchens, especially canteens in collective units.
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Affiliation(s)
- Jiali Long
- Guangzhou Center for Disease Control and Prevention, Guangzhou, Guangdong, China.
| | - Guanghong Du
- Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jiandong Chen
- Guangzhou Center for Disease Control and Prevention, Guangzhou, Guangdong, China
| | - Chaojun Xie
- Huadu District Center for Disease Control and Prevention, Guangzhou, Guangdong, China
| | - Jianxiong Xu
- Guangzhou Center for Disease Control and Prevention, Guangzhou, Guangdong, China
| | - Jun Yuan
- Guangzhou Center for Disease Control and Prevention, Guangzhou, Guangdong, China.
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Liu J, Luo B, Zhou Y, Ma X, Liang J, Sang X, Lyu L, Chen W, Fu P, Liu H, Zhen S, Wang C, Wu Y, Huang Q, Liang X, Bai G, Lan Z, Zhang S, Wu Y, Li N, Guo Y. Prevalence and distribution of acute gastrointestinal illness in the community of China: a population-based face-to-face survey, 2014-2015. BMC Public Health 2023; 23:836. [PMID: 37158857 PMCID: PMC10165855 DOI: 10.1186/s12889-023-15337-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 02/28/2023] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND The true incidence of acute gastrointestinal illness in China is underrecognized by surveillance systems. The aims of this study were to estimate the incidence and prevalence of self-reported AGI in the community of China, and to investigate sociodemographic and epidemiological determinants of AGI. METHODS We conducted a 12-months cross-sectional population-based survey in eight provinces of China during 2014-2015. The survey determined the prevalence and incidence of acute gastrointestinal illness (AGI) in the total permanent resident population in China according to the census of the population in 2010. The random multilevel population sample was stratified by geographic, population, and socioeconomic status. We used a recommended case definition of AGI, with diarrhea (three loose or watery stools) and/or any vomiting in a four-week recall. A face-to-face survey was conducted by selecting the member in the household with the most recent birthday. RESULTS Among 56,704 sampled individuals, 948 (1,134 person-time) fulfilled the case definition; 98.5% reported diarrhea. This corresponds to 2.3% (95% CI:1.9%-2.8%) of an overall standardized four-week prevalence and 0.3 (95% CI: 0.23-0.34) episodes per person-year of annual adjusted incidence rate. There was no significant difference between males and females. The incidence rates were higher among urban residents, and in the spring and summer. In the whole study period, 50% of the cases sought medical care, of which 3.9% were hospitalized and 14.3% provided a biological sample for laboratory identification of the causative agent. Children aged 0-4 and young adults aged 15-24, people living in rural areas and people who traveled frequently had higher prevalence of AGI. CONCLUSION Results showed that AGI represents a substantial burden in China, and will contribute to the estimation of the global burden of AGI. Complemented with data on the etiologies of AGI, these estimates will form the basis to estimate the burden of foodborne diseases in China.
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Affiliation(s)
- Jikai Liu
- NHC Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU4) of Chinese Academy of Medical Science, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Baozhang Luo
- Shanghai Municipal Center for Disease Prevention and Control, Shanghai, China
| | - Yijing Zhou
- Jiangsu Provincial Center for Disease Prevention and Control, Nanjing, China
| | - Xiaochen Ma
- Beijing Center for Disease Prevention and Control, Beijing, China
| | - Junhua Liang
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Xianglai Sang
- Gansu Provincial Center for Disease Control and Prevention, Lanzhou, China
| | - Le Lyu
- Jilin Provincial Center for Disease Control and Prevention, Changchun, China
| | - Wen Chen
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu, China
| | - Pengyu Fu
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, China
| | - Hong Liu
- Shanghai Municipal Center for Disease Prevention and Control, Shanghai, China
| | - Shiqi Zhen
- Jiangsu Provincial Center for Disease Prevention and Control, Nanjing, China
| | - Chao Wang
- Beijing Center for Disease Prevention and Control, Beijing, China
| | - Yangbo Wu
- Beijing Center for Disease Prevention and Control, Beijing, China
| | - Qiong Huang
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Xiaocheng Liang
- Gansu Provincial Center for Disease Control and Prevention, Lanzhou, China
| | - Guangda Bai
- Jilin Provincial Center for Disease Control and Prevention, Changchun, China
| | - Zhen Lan
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu, China
| | - Shufang Zhang
- Henan Provincial Center for Disease Control and Prevention, Zhengzhou, China
| | - Yongning Wu
- NHC Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU4) of Chinese Academy of Medical Science, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Ning Li
- NHC Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU4) of Chinese Academy of Medical Science, China National Center for Food Safety Risk Assessment, Beijing, China.
| | - Yunchang Guo
- NHC Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU4) of Chinese Academy of Medical Science, China National Center for Food Safety Risk Assessment, Beijing, China.
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10
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Wen CY, Liang X, Liu J, Zhao TY, Li X, Zhang Y, Guo G, Zhang Z, Zeng J. An achromatic colorimetric nanosensor for sensitive multiple pathogen detection by coupling plasmonic nanoparticles with magnetic separation. Talanta 2023; 256:124271. [PMID: 36681038 DOI: 10.1016/j.talanta.2023.124271] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/07/2022] [Accepted: 01/13/2023] [Indexed: 01/15/2023]
Abstract
Rapid screening of multiple pathogens will greatly improve the efficiency of pandemic prevention and control. Colorimetric methods exhibit the advantages of convenience, portability, low cost, time efficiency, and free of sophisticated instruments, yet usually have difficulties in simultaneous detection and suffer from monotonous color changes with low visual resolution and sensitivity. Hence, coupled three kinds of plasmonic nanoparticles (NPs) with magnetic separation, we developed an achromatic colorimetric nanosensor with highly enhanced visual resolution for simultaneous detection of SARS-CoV-2, Staphylococcus aureus, and Salmonella typhimurium. The achromatic nanosensor was composed of SARS-CoV-2-targeting red gold NPs, S. aureus-targeting yellow silver NPs and S. typhimurium-targeting blue silver triangle NPs mixed as black color. In the detection, three corresponding magnetic probes were added into the above mixture. In the presence of a target pathogen, it would be recognized and combined with corresponding colored reporters and magnetic probes to form sandwich complexes, which were removed by magnetic separation, and the sensor changed from black to a chromatic color (the color of the reporters remained in supernatant). Consequently, different target pathogen induced different color. For example, SARS-CoV-2, S. aureus, and S. typhimurium respectively produced green, purple, and orange. While coexistence of S. aureus and S. typhimurium produced red, and coexistence of S. aureus and SARS-CoV-2 produced blue, etc. Therefore, by observing the color change or measuring the absorption spectra, multiple pathogen detection was achieved conveniently. Compared with most colorimetric sensors, this achromatic nanosensor involved rich color change, thus significantly enhancing visual resolution and inspection sensitivity. Therefore, this sensor opened a promising avenue for efficient monitoring and early warning of food safety and quality.
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Affiliation(s)
- Cong-Ying Wen
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Xinyi Liang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Jianting Liu
- Huangdao Customs of the People's Republic of China, 266580, PR China
| | - Tian-Yu Zhao
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Xiang Li
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Yu Zhang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Gengchen Guo
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Zhuoran Zhang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Jingbin Zeng
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China.
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11
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Li Y, Kou J, Han X, Qiao J, Zhang W, Man S, Ma L. Argonaute-triggered visual and rebuilding-free foodborne pathogenic bacteria detection. JOURNAL OF HAZARDOUS MATERIALS 2023; 454:131485. [PMID: 37149945 DOI: 10.1016/j.jhazmat.2023.131485] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/15/2023] [Accepted: 04/23/2023] [Indexed: 05/09/2023]
Abstract
Foodborne pathogenic bacteria are recognized as the main causes of microbial contamination in food safety. Early screening and ultrasensitive detection of foodborne pathogenic bacteria is critical procedure to guarantee food safety. Argonaute is emerging as a new tool for detection owing to the programmability and high specificity. We reported a Novel and One-step cleavage method based on Argonaute by integrating Tag-specific primer extension and Exonuclease I (Exo I) for the first time, termed as NOTE-Ago. In this method, the invA of Salmonella typhi and nuc gene of Staphylococcus aureus were amplified using Tag-specific primer and the remaining primers were digested by Exo I. Then amplicons were served as the guide DNA for PfAgo. Consequently, the fluorophore-quencher reporter could be cleaved via PfAgo, resulting in changes in fluorescent intensity. With this strategy, target nucleic acid could be dexterously converted into fluorescent signals. The NOTE-Ago assay could detect 1 CFU/mL with a dynamic range from 1 to 108 CFU/mL. The satisfactory selectivity of NOTE-Ago assay further facilitated its application for detecting S. typhi- and S. aureus-contaminated food samples. This work enriches the toolbox of Argonaute-based detection and provides a one-step cleavage and rebuilding-free method for ultrasensitive detection of bacteria.
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Affiliation(s)
- Yaru Li
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Jun Kou
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Xiao Han
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Jiali Qiao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wenlu Zhang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Shuli Man
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China.
| | - Long Ma
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China.
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12
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Bassal R, Davidovich-Cohen M, Yakunin E, Rokney A, Ken-Dror S, Strauss M, Wolf T, Sagi O, Amit S, Moran-Gilad J, Treygerman O, Karyo R, Keinan-Boker L, Cohen D. Trends in the Epidemiology of Non-Typhoidal Salmonellosis in Israel between 2010 and 2021. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20095626. [PMID: 37174146 PMCID: PMC10178198 DOI: 10.3390/ijerph20095626] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/18/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023]
Abstract
Non-typhoidal salmonellosis (NTS) is one of the most common foodborne diseases worldwide. In this study, we aimed to analyze trends in the epidemiology of NTS in the last decade in Israel. Laboratory-confirmed cases of NTS at eight sentinel laboratories were reported to the Israel Sentinel Laboratory-Based Surveillance Network, integrated with the serotype identification performed at the Salmonella National Reference Laboratory of the Ministry of Health. The decrease in NTS incidence since 1999 continued between 2010 and 2014 (16.1 per 100,000 in 2014) and was interrupted by a rise between 2015 and 2017 (39.1 per 100,000 in 2017) associated with outbreaks of Salmonella Enteritidis. The incidence of NTS dropped again thereafter (21.4 per 100,000 in 2021). The 0-4 age group was the most affected by NTS (55.5% of the cases) throughout the surveillance period. The age-adjusted incidence rates were consistently high in the summer months (June-September) and low in the winter months (December-February). The overall decrease in the incidence of NTS in Israel since 1999 was temporarily interrupted in the last decade by country-wide outbreaks involving emerging or re-emerging Salmonella serotypes. Control measures should be enhanced for all risk points of food chain transmission of Salmonella spp. to further reduce the NTS morbidity in Israel.
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Affiliation(s)
- Ravit Bassal
- Israel Center for Disease Control, Ministry of Health, Sheba Medical Center, Ramat Gan 52621, Israel
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Maya Davidovich-Cohen
- Salmonella National Reference Center, Public Health Laboratories-Jerusalem (PHL-J) Public Health Services, Ministry of Health, Jerusalmem 34410, Israel
| | - Eugenia Yakunin
- Salmonella National Reference Center, Public Health Laboratories-Jerusalem (PHL-J) Public Health Services, Ministry of Health, Jerusalmem 34410, Israel
| | - Assaf Rokney
- Salmonella National Reference Center, Public Health Laboratories-Jerusalem (PHL-J) Public Health Services, Ministry of Health, Jerusalmem 34410, Israel
| | - Shifra Ken-Dror
- Microbiology Laboratory, Haifa and Western Gallilee, Clalit Health Services, Nesher 36888, Israel
| | - Merav Strauss
- Microbiology Laboratory, Emek Medical Center, Afula 18341, Israel
| | - Tamar Wolf
- Central Laboratory, Maccabi Health Services, Rehovot 76703, Israel
| | - Orli Sagi
- Clinical Microbiology Laboratory, Soroka University Medical Center, Beer-Sheva 84105, Israel
- The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Sharon Amit
- Microbiology Laboratories, Sheba Medical Center, Ramat Gan 52621, Israel
| | - Jacob Moran-Gilad
- Clinical Microbiology Laboratory, The Department of Clinical Microbiology and Infectious Diseases, Hadassah University Hospital, Jerusalem 91120, Israel
| | - Orit Treygerman
- Central Laboratory, Meuhedet Health Services, Lod 71293, Israel
| | - Racheli Karyo
- Central Laboratory, Clalit Health Services, Tel Aviv 61581, Israel
| | - Lital Keinan-Boker
- Israel Center for Disease Control, Ministry of Health, Sheba Medical Center, Ramat Gan 52621, Israel
- School of Public Health, University of Haifa, Haifa 34988, Israel
| | - Dani Cohen
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
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13
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Guo Y, Yu X, Wang J, Hua D, You Y, Wu Q, Ji Q, Zhang J, Li L, Hu Y, Wu Z, Wei X, Jin L, Meng F, Yang Y, Hu X, Long L, Hu S, Qi H, Ma J, Bei W, Yan X, Wang H, He Z. A food poisoning caused by ST7 Staphylococcal aureus harboring sea gene in Hainan province, China. Front Microbiol 2023; 14:1110720. [PMID: 37007521 PMCID: PMC10060626 DOI: 10.3389/fmicb.2023.1110720] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
ST7 Staphylococcus aureus is highly prevalent in humans, pigs, as well as food in China; however, staphylococcal food poisoning (SFP) caused by this ST type has rarely been reported. On May 13, 2017, an SFP outbreak caused by ST7 S. aureus strains occurred in two campuses of a kindergarten in Hainan Province, China. We investigated the genomic characteristics and phylogenetic analysis of ST7 SFP strains combined with the 91 ST7 food-borne strains from 12 provinces in China by performing whole-genome sequencing (WGS). There was clear phylogenetic clustering of seven SFP isolates. Six antibiotic genes including blaZ, ANT (4′)-Ib, tetK, lnuA, norA, and lmrS were present in all SFP strains and also showed a higher prevalence rate in 91 food-borne strains. A multiple resistance plasmid pDC53285 was present in SFP strain DC53285. Among 27 enterotoxin genes, only sea and selx were found in all SFP strains. A ФSa3int prophage containing type A immune evasion cluster (sea, scn, sak, and chp) was identified in SFP strain. In conclusion, we concluded that this SFP event was caused by the contamination of cakes with ST7 S. aureus. This study indicated the potential risk of new emergencing ST7 clone for SFP.
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Affiliation(s)
- Yahui Guo
- Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, China
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
- Beijing Chaoyang District Center for Disease Control and Prevention, Beijing, China
| | - Xiaojie Yu
- Hainan Provincial Center for Disease Control and Prevention, Haikou, China
| | - Jixiao Wang
- Hainan Provincial Center for Disease Control and Prevention, Haikou, China
| | - De Hua
- Hainan Provincial Center for Disease Control and Prevention, Haikou, China
| | - Yuanhai You
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Qingbo Wu
- Hainan Provincial Center for Disease Control and Prevention, Haikou, China
| | - Qinglong Ji
- Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Jianzhong Zhang
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Liefei Li
- Hainan Provincial Center for Disease Control and Prevention, Haikou, China
| | - Yuan Hu
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Zhonghui Wu
- Hainan Provincial Center for Disease Control and Prevention, Haikou, China
| | - Xiaoyue Wei
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Lianqun Jin
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Fanliang Meng
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Yuhua Yang
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Xiaofeng Hu
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Lijin Long
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Songnian Hu
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Heyuan Qi
- Microbial Resource and Big Data Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Juncai Ma
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- Microbial Resource and Big Data Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Wenwen Bei
- Hainan Provincial Center for Disease Control and Prevention, Haikou, China
| | - Xiaomei Yan
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
- *Correspondence: Xiaomei Yan,
| | - Haibin Wang
- Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, China
- Beijing Chaoyang District Center for Disease Control and Prevention, Beijing, China
- Haibin Wang,
| | - Zilong He
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Interdisciplinary Innovation Institute of Medicine and Engineering, School of Engineering Medicine, Beihang University, Beijing, China
- Zilong He,
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14
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Wen CY, Zhao LJ, Wang Y, Wang K, Li HW, Li X, Zi M, Zeng JB. Colorimetric and photothermal dual-mode lateral flow immunoassay based on Au-Fe 3O 4 multifunctional nanoparticles for detection of Salmonella typhimurium. Mikrochim Acta 2023; 190:57. [PMID: 36652031 PMCID: PMC9847459 DOI: 10.1007/s00604-023-05645-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 01/02/2023] [Indexed: 01/19/2023]
Abstract
Au-Fe3O4 multifunctional nanoparticles (NPs) were synthesized and integrated with lateral flow immunoassay (LFIA) for dual-mode detection of Salmonella typhimurium. The Au-Fe3O4 NPs not only combined excellent local surface plasmon resonance characteristics and superparamagnetic properties, but also exhibited good photothermal effect. In the detection, antibody-conjugated Au-Fe3O4 NPs first captured S. typhimurium from complex matrix, which was then loaded on the LFIA strip and trapped by the T-line. By observing the color bands with the naked eyes, qualitative detection was performed free of instrument. By measuring the photothermal signal, quantification was achieved with a portable infrared thermal camera. The introduction of magnetic separation achieved the enrichment and purification of target bacteria, thus enhancing the detection sensitivity and reducing interference. This dual-mode LFIA achieved a visual detection limit of 5 × 105 CFU/mL and a photothermal detection limit of 5 × 104 CFU/mL. Compared with traditional Au-based LFIA, this dual-mode LFIA increased the detection sensitivity by 2 orders of magnitude and could be directly applied to unprocessed milk sample. Besides, this dual-mode LFIA showed good reproducibility and specificity. The intra-assay and inter-assay variation coefficients were 3.0% and 7.9%, and with this dual-mode LFIA, other bacteria hardly produced distinguishable signals. Thus, the Au-Fe3O4 NPs-based LFIA has potential to increase the efficiency of pandemic prevention and control. Au-Fe3O4 nanoparticle proved to be a promising alternative reporter for LFIA, achieving multifunctions: target purification, target enrichment, visual qualitation, and instrumental quantification, which improved the limitations of traditional LFIA.
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Affiliation(s)
- Cong-Ying Wen
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580 People’s Republic of China
| | - Ling-Jin Zhao
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580 People’s Republic of China
| | - Ying Wang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580 People’s Republic of China
| | - Kun Wang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580 People’s Republic of China
| | - Hui-Wen Li
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580 People’s Republic of China
| | - Xiang Li
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580 People’s Republic of China
| | - Min Zi
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580 People’s Republic of China
| | - Jing-Bin Zeng
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580 People’s Republic of China
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15
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Lin Y, Huang L, Tu Y, Huang B, Zhang S, Chen Y, Li W. Case report of Salmonella derby septicemia complicated with co-occurrence of disseminated intravascular coagulation and thrombotic microangiopathy. BMC Infect Dis 2022; 22:914. [PMID: 36476209 PMCID: PMC9730593 DOI: 10.1186/s12879-022-07913-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 12/01/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Both disseminated intravascular coagulation and thrombotic microangiopathy are complications of sepsis as Salmonella septicemia, respectively. They are related and have similar clinical characteristics as thrombopenia and organ dysfunctions. They rarely co-occur in some specific cases, which requires a clear distinction. CASE PRESENTATION A 22-year-old woman had just undergone intracranial surgery and suffered from Salmonella derby septicemia with multiorgan involvement in the hospital. Laboratory workup demonstrated coagulation disorder, hemolytic anemia, thrombocytopenia, and acute kidney injury, leading to the co-occurrence of disseminated intravascular coagulation and secondary thrombotic microangiopathy. She received antibiotics, plasma exchange therapy, dialysis, mechanical ventilation, fluids, and vasopressors and gained full recovery without complications. CONCLUSION Disseminated intravascular coagulation and secondary thrombotic microangiopathy can co-occur in Salmonella derby septicemia. They should be treated cautiously in diagnosis and differential diagnosis. Thrombotic microangiopathy should not be missed just because of the diagnosis of disseminated intravascular coagulation. Proper and timely identification of thrombotic microangiopathy with a diagnostic algorithm is essential for appropriate treatment and better outcomes.
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Affiliation(s)
- Yingxin Lin
- grid.440601.70000 0004 1798 0578Department of Intensive Care, Peking University Shenzhen Hospital, Shenzhen, China
| | - Lei Huang
- grid.440601.70000 0004 1798 0578Department of Intensive Care, Peking University Shenzhen Hospital, Shenzhen, China
| | - Yunliang Tu
- grid.440601.70000 0004 1798 0578Department of Intensive Care, Peking University Shenzhen Hospital, Shenzhen, China
| | - Bin Huang
- grid.440601.70000 0004 1798 0578Department of Intensive Care, Peking University Shenzhen Hospital, Shenzhen, China
| | - Sheng Zhang
- grid.440601.70000 0004 1798 0578Department of Intensive Care, Peking University Shenzhen Hospital, Shenzhen, China
| | - Yingqun Chen
- grid.440601.70000 0004 1798 0578Department of Intensive Care, Peking University Shenzhen Hospital, Shenzhen, China
| | - Weijia Li
- grid.440601.70000 0004 1798 0578Department of Intensive Care, Peking University Shenzhen Hospital, Shenzhen, China
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16
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Zhao J, Cheng H, Wang Z, Fu P, Guo Y, Yang S. Attribution Analysis of Foodborne Disease Outbreaks Related to Meat and Meat Products in China, 2002-2017. Foodborne Pathog Dis 2022; 19:839-847. [PMID: 36257634 DOI: 10.1089/fpd.2022.0028] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
This study aimed to understand the epidemiological characteristics of foodborne disease outbreaks related to meat and meat products in China from 2002 to 2017. Data collected from the National Foodborne Diseases Surveillance System and searched databases were analyzed. From 2002 to 2017, China reported 2815 outbreaks caused by foodborne diseases related to meat and meat products, resulting in 52,122 illnesses and 25,361 hospitalizations, and 96 deaths. Outbreaks were markedly seasonal and concentrated from May to September, accounting for 66.93%. Outbreaks were concentrated mainly in China's eastern coastal and southern regions. Unidimensional attribution analysis revealed that livestock meat was the most commonly implicated food category causing the outbreaks, accounting for 28.67%. Bacteria were the most common pathogenic cause of outbreaks, accounting for 51.94%. Clostridium botulinum was the most common pathogenic cause of death, accounting for 34.38%. Improper processing was the most common contributing factor, accounting for 27.89%. Households were the most common food preparation location causing the outbreak, accounting for 34.39%. Two-dimensional and multidimensional attribution analysis found that Salmonella contamination occurred in different locations and regions, mainly caused by various contributing factors and improper processing. Nitrite poisoning is caused by improper processing in households in East China. Bacterial causes were the commonest agents associated with foodborne diseases related to meat and meat products, and improving the safety and quality of meat and meat product should be a priority.
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Affiliation(s)
- Jie Zhao
- School of Public Health, Weifang Medical University, Weifang, China
| | - Han Cheng
- School of Public Health, Weifang Medical University, Weifang, China
| | - Zhiyuan Wang
- School of Public Health, Weifang Medical University, Weifang, China
| | - Ping Fu
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Yunchang Guo
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Shuxiang Yang
- School of Public Health, Weifang Medical University, Weifang, China
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Cai G, Wang Y, Zhang Y, Zheng L, Lin J. Magnetorheological elastomer and smartphone enable microfluidic biosensing of foodborne pathogen. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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18
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Genomic and Transcriptomic Analysis Reveal Multiple Strategies for the Cadmium Tolerance in Vibrio parahaemolyticus N10-18 Isolated from Aquatic Animal Ostrea gigas Thunberg. Foods 2022; 11:foods11233777. [PMID: 36496584 PMCID: PMC9741282 DOI: 10.3390/foods11233777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 11/05/2022] [Accepted: 11/16/2022] [Indexed: 11/25/2022] Open
Abstract
The waterborne Vibrio parahaemolyticus can cause acute gastroenteritis, wound infection, and septicemia in humans. Pollution of heavy metals in aquatic environments is proposed to link high incidence of the multidrug-resistant (MDR) pathogen. Nevertheless, the genome evolution and heavy metal tolerance mechanism of V. parahaemolyticus in aquatic animals remain to be largely unveiled. Here, we overcome the limitation by characterizing an MDR V. parahaemolyticus N10-18 isolate with high cadmium (Cd) tolerance using genomic and transcriptomic techniques. The draft genome sequence (4,910,080 bp) of V. parahaemolyticus N10-18 recovered from Ostrea gigas Thunberg was determined, and 722 of 4653 predicted genes had unknown function. Comparative genomic analysis revealed mobile genetic elements (n = 11) and heavy metal and antibiotic-resistance genes (n = 38 and 7). The bacterium significantly changed cell membrane structure to resist the Cd2+ (50 μg/mL) stress (p < 0.05). Comparative transcriptomic analysis revealed seven significantly altered metabolic pathways elicited by the stress. The zinc/Cd/mercury/lead transportation and efflux and the zinc ATP-binding cassette (ABC) transportation were greatly enhanced; metal and iron ABC transportation and thiamine metabolism were also up-regulated; conversely, propanoate metabolism and ribose and maltose ABC transportation were inhibited (p < 0.05). The results of this study demonstrate multiple strategies for the Cd tolerance in V. parahaemolyticus.
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Zhao G, Yang T, Cheng H, Wang L, Liu Y, Gao Y, Zhao J, Liu N, Huang X, Liu J, Zhang X, Xu Y, Wang J, Wang J. Establishment and Application of a Predictive Growth Kinetic Model of Salmonella with the Appearance of Two Other Dominant Background Bacteria in Fresh Pork. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227673. [PMID: 36431773 PMCID: PMC9696609 DOI: 10.3390/molecules27227673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/25/2022] [Accepted: 11/01/2022] [Indexed: 11/09/2022]
Abstract
To better guide microbial risk management and control, growth kinetic models of Salmonella with the coexistence of two other dominant background bacteria in pork were constructed. Sterilized pork cutlets were inoculated with a cocktail of Salmonella Derby (S. Derby), Pseudomonas aeruginosa (P. aeruginosa), and Escherichia coli (E. coli), and incubated at various temperatures (4-37 °C). The predictive growth models were developed based on the observed growth data. By comparing R2 of primary models, Baranyi models were preferred to fit the growth curves of S. Derby and P. aeruginosa, while the Huang model was preferred for E. coli (all R2 ≥ 0.997). The secondary Ratkowsky square root model can well describe the relationship between temperature and μmax (all R2 ≥ 0.97) or Lag (all R2 ≥ 0.98). Growth models were validated by the actual test values, with Bf and Af close to 1, and MSE around 0.001. The time for S. Derby to reach a pathogenic dose (105 CFU/g) at each temperature in pork was predicted accordingly and found to be earlier than the time when the pork began to be judged nearly fresh according to the sensory indicators. Therefore, the predictive microbiology model can be applied to more accurately predict the shelf life of pork to secure its quality and safety.
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Affiliation(s)
- Ge Zhao
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
| | - Tengteng Yang
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Huimin Cheng
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Lin Wang
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
| | - Yunzhe Liu
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
| | - Yubin Gao
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
| | - Jianmei Zhao
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
| | - Na Liu
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
| | - Xiumei Huang
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
| | - Junhui Liu
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
| | - Xiyue Zhang
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
| | - Ying Xu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Jun Wang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
- Correspondence: (J.W.); (J.W.)
| | - Junwei Wang
- Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, China Animal Health and Epidemiology Center, Qingdao 266032, China
- Correspondence: (J.W.); (J.W.)
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20
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Li YJ, Yang YF, Zhou YJ, Zhang RH, Liu CW, Liu H, Li XG, Chen W, Chen Y, Wu YN. Estimating the burden of foodborne gastroenteritis due to nontyphoidal Salmonella enterica, Shigella and Vibrio parahaemolyticus in China. PLoS One 2022; 17:e0277203. [PMID: 36342937 PMCID: PMC9639838 DOI: 10.1371/journal.pone.0277203] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 10/21/2022] [Indexed: 11/09/2022] Open
Abstract
To estimate the incidence of foodborne gastroenteritis caused by nontyphoidal Salmonella enterica, Shigella, and Vibrio parahaemolyticus in China, population surveys and sentinel hospital surveillance were implemented in six provinces from July 2010 to July 2011, and a multiplier calculation model for the burden of disease was constructed. The multiplier for salmonellosis and V. parahaemolyticus gastroenteritis was estimated at 4,137 [95% confidence interval (CI) 2,320–5,663], and for shigellosis at 4,356 (95% CI 2,443–5,963). Annual incidence per 100,000 population was estimated as 245 (95% CI 138–336), 67 (95% CI 38–92), and 806 (95% CI 452–1,103) for foodborne salmonellosis, shigellosis, and V. parahaemolyticus gastroenteritis, respectively, indicating that foodborne infection caused by these three pathogens constitutes an important burden to the Chinese healthcare system. Continuous implementation of active surveillance of foodborne diseases, combined with multiplier models to estimate disease burden, makes it possible for us to better understand food safety status in China.
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Affiliation(s)
- Yan-Jun Li
- NHC Key Laboratory of Food Safety Risk Assessment, Research Unit of Food Safety, Chinese Academy of Medical Sciences (No. 2019RU014), China National Center for Food Safety Risk Assessment, Beijing, People's Republic of China
| | - Yun-Fan Yang
- NHC Key Laboratory of Food Safety Risk Assessment, Research Unit of Food Safety, Chinese Academy of Medical Sciences (No. 2019RU014), China National Center for Food Safety Risk Assessment, Beijing, People's Republic of China
| | - Yi-Jing Zhou
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, People's Republic of China
| | - Rong-Hua Zhang
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Cheng-Wei Liu
- Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, People's Republic of China
| | - Hong Liu
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, People's Republic of China
| | - Xiu-Gui Li
- Guangxi Zhuang Autonomous Region Center for Disease Control and Prevention, Nanning, People's Republic of China
| | - Wen Chen
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu, People's Republic of China
| | - Yan Chen
- NHC Key Laboratory of Food Safety Risk Assessment, Research Unit of Food Safety, Chinese Academy of Medical Sciences (No. 2019RU014), China National Center for Food Safety Risk Assessment, Beijing, People's Republic of China
| | - Yong-Ning Wu
- NHC Key Laboratory of Food Safety Risk Assessment, Research Unit of Food Safety, Chinese Academy of Medical Sciences (No. 2019RU014), China National Center for Food Safety Risk Assessment, Beijing, People's Republic of China
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21
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Antibiofilm Efficacy of Quercetin against Vibrio parahaemolyticus Biofilm on Food-Contact Surfaces in the Food Industry. Microorganisms 2022; 10:microorganisms10101902. [PMID: 36296179 PMCID: PMC9610505 DOI: 10.3390/microorganisms10101902] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 11/21/2022] Open
Abstract
Vibrio parahaemolyticus, one of the most common foodborne pathogenic bacteria that forms biofilms, is a persistent source of concern for the food industry. The food production chain employs a variety of methods to control biofilms, although none are completely successful. This study aims to evaluate the effectiveness of quercetin as a food additive in reducing V. parahaemolyticus biofilm formation on stainless-steel coupons (SS) and hand gloves (HG) as well as testing its antimicrobial activities. With a minimum inhibitory concentration (MIC) of 220 µg/mL, the tested quercetin exhibited the lowest bactericidal action without visible growth. In contrast, during various experiments in this work, the inhibitory efficacy of quercetin at sub-MICs levels (1/2, 1/4, and 1/8 MIC) against V. parahaemolyticus was examined. Control group was not added with quercetin. With increasing quercetin concentration, swarming and swimming motility, biofilm formation, and expression levels of target genes linked to flagellar motility (flaA, flgL), biofilm formation (vp0952, vp0962), virulence (VopQ, vp0450), and quorum-sensing (aphA, luxS) were all dramatically suppressed. Quercetin (0−110 μg/mL) was investigated on SS and HG surfaces, the inhibitory effect were 0.10−2.17 and 0.26−2.31 log CFU/cm2, respectively (p < 0.05). Field emission scanning electron microscopy (FE-SEM) corroborated the findings because quercetin prevented the development of biofilms by severing cell-to-cell contacts and inducing cell lysis, which resulted in the loss of normal cell shape. Additionally, there was a significant difference between the treated and control groups in terms of motility (swimming and swarming). According to our research, quercetin produced from plants should be employed as an antibiofilm agent in the food sector to prevent the growth of V. parahaemolyticus biofilms. These results indicate that throughout the entire food production chain, bacterial targets are of interest for biofilm reduction with alternative natural food agents in the seafood industry.
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22
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Antimicrobial Efficacy of Quercetin against Vibrio parahaemolyticus Biofilm on Food Surfaces and Downregulation of Virulence Genes. Polymers (Basel) 2022; 14:polym14183847. [PMID: 36145988 PMCID: PMC9505375 DOI: 10.3390/polym14183847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/08/2022] [Accepted: 09/12/2022] [Indexed: 12/24/2022] Open
Abstract
For the seafood industry, Vibrio parahaemolyticus, one of the most prevalent food-borne pathogenic bacteria that forms biofilms, is a constant cause of concern. There are numerous techniques used throughout the food supply chain to manage biofilms, but none are entirely effective. Through assessing its antioxidant and antibacterial properties, quercetin will be evaluated for its ability to prevent the growth of V. parahaemolyticus biofilm on shrimp and crab shell surfaces. With a minimum inhibitory concentration (MIC) of 220 µg/mL, the tested quercetin exhibited the lowest bactericidal action without visible growth of bacteria. In contrast, during various experiments in this work, the inhibitory efficacy of quercetin without (control) and with sub-MICs levels (1/2, 1/4, and 1/8 MIC) against V. parahaemolyticus was examined. With increasing quercetin concentration, swarming and swimming motility, biofilm formation, and expression levels of related genes linked to flagella motility (flaA and flgL), biofilm formation (vp0952 and vp0962), and quorum-sensing (luxS and aphA) were all dramatically reduced (p < 0.05). Quercetin (0−110 μg/mL) was investigated on shrimp and crab shell surfaces, the inhibitory effects were 0.68−3.70 and 0.74−3.09 log CFU/cm2, respectively (p < 0.05). The findings were verified using field emission scanning electron microscopy (FE-SEM), which revealed quercetin prevented the development of biofilms by severing cell-to-cell contacts and induced cell lysis, which resulted in the loss of normal cell shape. Furthermore, there was a substantial difference in motility between the treatment and control groups (swimming and swarming). According to our findings, plant-derived quercetin should be used as an antimicrobial agent in the food industry to inhibit the establishment of V. parahaemolyticus biofilms. These findings suggest that bacterial targets are of interest for biofilm reduction with alternative natural food agents in the seafood sector along the entire food production chain.
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23
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Liu H, Zhu W, Cao Y, Gao J, Jin T, Qin N, Xia X. Punicalagin inhibits biofilm formation and virulence gene expression of Vibrio parahaemolyticus. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109045] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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24
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Roy PK, Song MG, Park SY. The Inhibitory Effect of Quercetin on Biofilm Formation of Listeria monocytogenes Mixed Culture and Repression of Virulence. Antioxidants (Basel) 2022; 11:antiox11091733. [PMID: 36139807 PMCID: PMC9495692 DOI: 10.3390/antiox11091733] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/26/2022] [Accepted: 08/28/2022] [Indexed: 02/08/2023] Open
Abstract
Listeria monocytogenes is the species of foodborne pathogenic bacteria that causes the infection listeriosis. The food production chain employs various methods to control biofilms, although none are completely successful. This study evaluates the effectiveness of quercetin as a food additive in reducing L. monocytogenes mixed cultures (ATCC19113, ATCC19117, and ATCC15313) biofilm formation on stainless steel (SS), silicon rubber (SR), and hand glove (HG) coupons, as well as tests its antimicrobial activities. With a minimum inhibitory concentration (MIC) of 250 µg/mL, the tested quercetin exhibited the lowest bactericidal action with no visible bacterial growth. In contrast, during various experiments in this work, the inhibitory efficacy of quercetin at sub-MICs levels (1/2, 1/4, and 1/8 MIC) against L. monocytogenes was examined. A control group was not added with quercetin. The current study also investigates the effect of quercetin on the expression of different genes engaged in motility (flaA, fbp), QS (agrA), and virulence (hlyA, prfA). Through increasing quercetin concentration, swarming and swimming motility, biofilm formation, and expression levels of target genes linked to flagella motility, virulence, and quorum-sensing were all dramatically reduced. Quercetin (0−125 μg/mL) was investigated on the SS, SR, and HG surfaces; the inhibitory effects were 0.39−2.07, 0.09−1.96 and 0.03−1.69 log CFU/cm2, respectively (p < 0.05). Field-emission scanning electron microscopy (FE-SEM) corroborated the findings because quercetin prevented the development of biofilms by severing cell-to-cell contacts and inducing cell lysis, which resulted in the loss of normal cell shape. Our findings suggest that plant-derived quercetin should be used as an antimicrobial agent in the food industry to control the development of L. monocytogenes biofilms. These outcomes suggest that bacterial targets are of interest for biofilm reduction, with alternative natural food agents in the food sector along the entire food production chain.
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Affiliation(s)
| | | | - Shin Young Park
- Correspondence: ; Tel.: +82-55-772-9143; Fax: +82-55-772-9149
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25
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Michael SG, Drigo B, Michael-Kordatou I, Michael C, Jäger T, Aleer SC, Schwartz T, Donner E, Fatta-Kassinos D. The effect of ultrafiltration process on the fate of antibiotic-related microcontaminants, pathogenic microbes, and toxicity in urban wastewater. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:128943. [PMID: 35650718 DOI: 10.1016/j.jhazmat.2022.128943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/11/2022] [Accepted: 04/14/2022] [Indexed: 05/09/2023]
Abstract
Ultrafiltration (UF) was assessed at chemical, microbiological, genetical and toxicological level and in terms of removing specific antibiotic-related microcontaminants from urban wastewater. The UF capacity to remove various antibiotics (clarithromycin, erythromycin, ampicillin, ofloxacin, sulfamethoxazole, trimethoprim, and tetracycline; [A0] = 100 μg L-1) was optimised with respect to the feed recirculation rate (25-50%) and feed/transmembrane pressure (1.5-3/1.5-2.4 bar, respectively). Here, we tested the UF capacity to reduce the cultivable bacteria (faecal coliforms, total heterotrophs, Enterococci, Pseudomonas aeruginosa), enteric opportunistic pathogens, including antibiotic-resistant bacteria (ARB) and antibiotic-resistance genes (ARGs) load. Moreover, the toxicity towards Daphnia magna and three plant species was investigated. Upon optimisation of UF, the removal of antibiotics ranged from 19% for trimethoprim to 95% for clarithromycin. The concentration of cultivable faecal coliforms in the permeate was significantly reduced compared to the feed (P < 0.001), whereas all the bacterial species decreased by more than 3 logs. A similar pattern of reduction was observed for the ARGs (P < 0.001) and enteric opportunistic pathogens (~3-4 logs reduction). A nearly complete removal of the antibiotics was obtained by UF followed by granular activated carbon adsorption (contact time: 90 min), demonstrating the positive contribution of such combination to the abatement of chemical microcontaminants.
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Affiliation(s)
- Stella G Michael
- Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus; Civil and Environmental Engineering Department, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus
| | - Barbara Drigo
- Future Industries Institute (FII), Mawson Lakes Campus, University of South Australia, 5095 Mawson Lakes, Australia.
| | - Irene Michael-Kordatou
- Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus
| | - Costas Michael
- Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus
| | - Thomas Jäger
- Karlsruhe Institute of Technology, Institute of Functional Interfaces, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Samuel C Aleer
- Future Industries Institute (FII), Mawson Lakes Campus, University of South Australia, 5095 Mawson Lakes, Australia
| | - Thomas Schwartz
- Karlsruhe Institute of Technology, Institute of Functional Interfaces, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Erica Donner
- Future Industries Institute (FII), Mawson Lakes Campus, University of South Australia, 5095 Mawson Lakes, Australia
| | - Despo Fatta-Kassinos
- Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus; Civil and Environmental Engineering Department, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus.
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Zhong X, Pan Z, Mu Y, Zhu Y, Zhang Y, Ma J, Yang M, Yao H. Characterization and epidemiological analysis of Vibrio parahaemolyticus isolated from different marine products in East China. Int J Food Microbiol 2022; 380:109867. [DOI: 10.1016/j.ijfoodmicro.2022.109867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 07/18/2022] [Accepted: 07/28/2022] [Indexed: 12/01/2022]
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Antibiotics Resistance and Virulence of Staphylococcus aureus Isolates Isolated from Raw Milk from Handmade Dairy Retail Stores in Hefei City, China. Foods 2022; 11:foods11152185. [PMID: 35892770 PMCID: PMC9330789 DOI: 10.3390/foods11152185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/13/2022] [Accepted: 07/21/2022] [Indexed: 12/02/2022] Open
Abstract
Handmade dairy products, which retain the nutrients in milk to the greatest extent, have become popular in China recently. However, no investigation regarding the characteristics of Staphylococcus aureus (S. aureus) in raw milk of handmade dairy retail stores has been reported. Here, we investigated the antimicrobial susceptibility, virulence, biofilm formation, and genetic diversity of S. aureus in raw milk from handmade dairy retail stores in Hefei, China. After 10 months of long-term monitoring, 50 S. aureus strains were isolated from 69 different raw milk samples, of which 6 were positive for methicillin-resistant S. aureus (MRSA). The resistance rates of these isolates to ampicillin, erythromycin, kanamycin, tetracycline, sulfamethoxazole-trimethoprim, gentamicin, ofloxacin, oxacillin, chloramphenicol, and doxycycline were 56, 54, 40, 24, 22, 22, 18, 14, 8 and 6%, respectively. All 50 isolates were susceptible to vancomycin and 29 strains (58%) showed multidrug resistance phenotype. For enterotoxins genes, selp (14%) was detected the most frequently, followed by sea (6%), sec (4%), sei (4%), ser (4%), selj (4%), and seh (2%). By microplate assay, 32 and 68% of the strains showed moderate and strong biofilm formation ability, respectively. Fifty isolates were discriminated into nine spa types, and the most common spa typing was t034 (42%). The results of this study indicate that S. aureus from raw milk may constitute a risk concerning food poisoning, and more attention must be given to awareness and hygienic measures in the food industry.
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Dynamics of Antimicrobial Resistance and Genomic Epidemiology of Multidrug-Resistant Salmonella enterica Serovar Indiana ST17 from 2006 to 2017 in China. mSystems 2022; 7:e0025322. [PMID: 35861536 PMCID: PMC9426611 DOI: 10.1128/msystems.00253-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The genetic features of foodborne Salmonella have changed in recent years as multidrug-resistant (MDR) strains have become prevalent among various serovars. The recent expansion of MDR Salmonella enterica serovar Indiana sequence type 17 (ST17) poses an increasing threat to global public health, as 24.3% (61/251) of S. Indiana isolates in this study exhibited resistance to three clinically important antimicrobial agents: fluoroquinolones (ciprofloxacin), extended-spectrum β-lactams (cephalosporin), and macrolides (azithromycin). Both the evolutionary histories and antimicrobial resistance (AMR) profiles of this serovar remain to be described. Bioinformatic analysis revealed multiple lineages have coexisted and spread throughout China. Specifically, emergence of a predominant lineage appears to be associated with accumulated various substitutions in the chromosomal quinolone resistance-determining regions (GyrA S83F D87N and ParC T57S S80R) (141 [56.2%]), as well as acquisition of an extended-spectrum β-lactamase (ESBL)-producing IncHI2 plasmid that has subsequently undergone extensive rearrangement and an IncX1 plasmid that contains mph(A), conferring resistance to azithromycin. Several other evolutionary events influencing the trajectory of this drug-resistant serovar were also identified, including sporadic acquisitions of blaCTX-M-carrying plasmids, along with chromosomal integration of blaCTX-M within subclusters. Most human isolates reside in clusters containing isolates from animals, mainly from chickens, indicating the close relationship of human isolates with those from food animals. These data demonstrate that MDR S. Indiana ST17 is already widespread and capable of acquiring resistance traits against the clinical important antimicrobial agents, suggesting it should be considered a high-risk global MDR pathogen. The complexity of its evolutionary history has implications for AMR surveillance, epidemiological analysis, and control of emerging clinical lineages. IMPORTANCE The emergence and worldwide spread of AMR Salmonella constitute great public health concerns. S. enterica serovar Indiana is a typical MDR serovar characterized by sporadic reports. However, comprehensive population genomics studies have not been performed on this serovar. This study provides a detailed and comprehensive insight into the rapid evolution of AMR in this important Salmonella serovar in the past 15 years in eight provinces of China. We documented diverse contributory genetic processes, including stable chromosomal integrations of resistance genes, the persistence and evolution of mobile resistance elements within sublineages, and sporadic acquisition of different resistance determinants that occur at all genetic levels (genes, genetic contexts, plasmids, and host strains). There are different mechanisms of antimicrobial resistance in S. enterica serovar Indiana from those of other serovars. This study sheds light on the formation of MDR S. enterica serovar Indiana with chickens as its potential reservoirs and paves the way to curb its further expansion among food animals.
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Zhang B, Fu Y, Wang F, Yang J, Pan Z, Huang M, Shen K, Shen C. Multidrug-resistant enteroaggregative Escherichia coli (EAEC) enters dormant state during heat treatment: A potential hazard in municipal sludge. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 305:119312. [PMID: 35439600 DOI: 10.1016/j.envpol.2022.119312] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 03/15/2022] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
Reuse of sewage sludge is a general trend and land application is an essential way to reuse sludge. The outbreak of coronavirus disease has raised concerns about human pathogens and their serious threat to public health. The risk of pathogenic bacterial contamination from land application of municipal sludge has not been well assessed. The purpose of this study was to investigate the presence of pathogenic bacteria in municipal sewage sludge and to examine the survival potential of certain multidrug-resistant enteroaggregative Escherichia coli (EAEC) strain isolated from sewage sludge during heat treatment. The sewage sludge produced in the two wastewater treatment plants contained pathogenic bacteria such as pathogenic E. coli, Shigella flexneri, and Citrobacter freundii. The environmental strain of EAEC isolated from the sludge was resistant to eight types of antibiotics. It could also enter the dormant state after 4.5 h of treatment at 55 °C and regrow at 37 °C, while maintaining its antibiotic resistance. Our results indicate that the dormancy of EAEC might be why it is heat-resistant and could not be killed completely during the sludge heat treatment process. Owing to the regrowth of the dormant pathogenic bacteria, it is risky to apply the sludge to land even if the sludge is heat-treated, and there is also a risk of spreading antibiotic resistance.
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Affiliation(s)
- Bingni Zhang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yulong Fu
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Feiyu Wang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jiawen Yang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Grande Environmental Technology Co., Ltd., Hangzhou, 310051, China
| | - Zhiyu Pan
- Department of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Meiling Huang
- Department of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Kewei Shen
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chaofeng Shen
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou, 310058, China.
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30
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Karami Matin B, Amrollahi-Sharifabadi M, Rezaei S, Heidari A, Kazemi-Karyani A. Epidemiology and Economic Burden of an Outbreak of Cyclopeptide-Containing Mushroom Poisoning in the West of Iran. Front Public Health 2022; 10:910024. [PMID: 35910917 PMCID: PMC9337693 DOI: 10.3389/fpubh.2022.910024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/03/2022] [Indexed: 11/18/2022] Open
Abstract
Little evidence is available on the epidemiological and economical dimensions of certain foodborne diseases such as wild mushroom poisoning. This study aimed to investigate the epidemiology and estimate the costs of poisoning with cyclopeptide-containing mushrooms in Kermanshah province in 2018. In this study, poisoning was investigated in different subgroups. The cost of illness method with a bottom-up approach was used to estimate the poisoning costs. Both direct and indirect costs of the poisoning were included in the analysis. The perspective of the study was society. Required data were obtained from the medical records of Imam Khomeini hospital and completed through a line survey with the patients. Two hundred eighty-three patients were poisoned in Kermanshah due to poisoning with cyclopeptide-containing mushrooms. Of 283 patients, 143 (50.53%) were men and 59.01% of patients were rural residents. About 43% of admissions were out-patient cases and ~40% of patients were hospitalized within 1–3 days. Also, eight patients were pronounced dead in the area. The total cost of poisoning with cyclopeptide-containing mushrooms in Kermanshah province was $ 1,259,349.26. Of that, $ 69,281.65 was related to direct medical costs and $ 10,727.23 was direct non-medical costs. The indirect costs of death were estimated to be $ 1,125,829.7. The current study revealed that there is a significant financial burden due to cyclopeptide-containing mushrooms on patients, the health system, and society as a whole. Further studies are recommended to clarify the epidemiological and economic burden of foodborne illnesses related to wild mushroom poisonings. Sharing the outputs with health authorities, and informing the general public are warranted to reduce the burden of such diseases.
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Affiliation(s)
- Behzad Karami Matin
- Research Center for Environmental Determinants of Health, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | | | - Satar Rezaei
- Research Center for Environmental Determinants of Health, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Afshar Heidari
- Research Center for Environmental Determinants of Health, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ali Kazemi-Karyani
- Research Center for Environmental Determinants of Health, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- *Correspondence: Ali Kazemi-Karyani ; orcid.org/0000-0002-4448-9317
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31
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Wang KE, Mirosa M, Hou Y, Bremer P. Chinese Consumers' Acceptance of Novel Technologies Designed To Control Foodborne Bacteria. J Food Prot 2022; 85:1017-1026. [PMID: 35503972 DOI: 10.4315/jfp-22-006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 04/27/2022] [Indexed: 11/11/2022]
Abstract
ABSTRACT Chinese consumers (n = 604) were asked three times to rate their acceptance of traditional thermal processing and several newer technologies (high pressure processing, irradiation, bacteriophages, antimicrobial packaging, pulsed electric fields, and rinsing meat carcasses with antimicrobial solutions) designed to control foodborne bacteria in food (i) based on their existing knowledge, (ii) after the provision of information about L. monocytogenes, and (iii) after further reading a brief description of the technology. Thermal processing (6.00 of 7 on Likert scale) and high pressure processing (5.73 of 7) were rated the most acceptable technologies, and rinsing with antimicrobial solutions (4.43 of 7) was rated the least acceptable technology. Information outlining the benefits of a technology had a larger positive effect on acceptance of every novel technology discussed (increases of 0.14 to 0.49 units depending on the technology) than information about L. monocytogenes and a brief description of the technology. This research has shown that providing information about foodborne bacteria and a technology designed to control them will improve consumers' acceptance of the technology, with the provision of information being of most importance for technologies for which the consumers are less familiar. Chinese consumers accepted or rejected a food technology for a variety of reasons; however, consumers with a greater awareness of foodborne bacteria rated the acceptability of novel technologies designed to kill bacteria higher than those with a low awareness (0.56 to 1.71 units depending on the technology). The results of this research will be of benefit to food companies considering adopting novel technologies to control foodborne bacteria because they provide insights that will enable them to develop more effective communication and implementation strategies. HIGHLIGHTS
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Affiliation(s)
- K E Wang
- Department of Food Science, University of Otago, P.O. Box 56, Dunedin, 9054 New Zealand.,Hebei Agricultural University, Baoding 071001, Hebei, People's Republic of China
| | - Miranda Mirosa
- Department of Food Science, University of Otago, P.O. Box 56, Dunedin, 9054 New Zealand.,New Zealand Food Safety Science and Research Centre, Massey University, Private Bag 11-222, Palmerston North, 4442 New Zealand
| | - Yakun Hou
- Department of Food Science, University of Otago, P.O. Box 56, Dunedin, 9054 New Zealand.,Hebei Agricultural University, Baoding 071001, Hebei, People's Republic of China
| | - Phil Bremer
- Department of Food Science, University of Otago, P.O. Box 56, Dunedin, 9054 New Zealand.,New Zealand Food Safety Science and Research Centre, Massey University, Private Bag 11-222, Palmerston North, 4442 New Zealand
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Shi YG, Lin S, Chen WX, Jiang L, Gu Q, Li DH, Chen YW. Dual-Stage Blue-Light-Guided Membrane and DNA-Targeted Photodynamic Inactivation Using Octyl Gallate for Ultraefficient Eradication of Planktonic Bacteria and Sessile Biofilms. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:7547-7565. [PMID: 35687111 DOI: 10.1021/acs.jafc.2c01667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This study aimed to investigate the synergistic bactericidal activity and mechanism of dual-stage light-guided membrane and DNA-targeted photodynamic inactivation (PDI) by the combination of blue light (BL, 420 nm) and the food additive octyl gallate (OG) against Vibrio parahaemolyticus in planktonic and biofilm growth modes. While OG serves as an outstanding exogenous photosensitizer, the planktonic cells were not visibly detectable after the OG-mediated PDI treatment with 0.2 mM OG within 15 min (191.7 J/cm2), and its biofilm was nearly eradicated within 60 min (383.4 J/cm2). Gram-positive Staphylococcus aureus was more susceptible to the PDI than Gram-negative V. parahaemolyticus. The cellular wall and proteins, as well as DNA, were the vulnerable targets for PDI. The membrane integrity could be initially disrupted by OG bearing a hydrophilic head and a hydrophobic tail via transmembrane insertion. The enhancement of OG uptake due to the first-stage light-assisted photochemical internalization (PCI) promoted the accumulation of OG in cells. It further boosted the second-stage light irradiation of the photosensitizer-inducing massive cell death. Upon the second-stage BL irradiation, reactive oxygen species (ROS) generated through the OG-mediated PDI in situ could extensively deconstruct membranes, proteins, and DNA, as well as biofilms, while OG could be activated by BL to carry out photochemical reactions involving the formation of OG-bacterial membrane protein (BMP) covalent conjugates and the interactions with DNA. This dual-stage light-guided subcellular dual-targeted PDI strategy exhibits encouraging effects on the eradication of planktonic bacteria and sessile biofilms, which provides a new insight into the development of an ultraeffective antimicrobial and biofilm removing/reducing technique to improve microbiological safety in the food industry.
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33
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Li Y, Li K, Peng K, Wang Z, Song H, Li R. Distribution, antimicrobial resistance and genomic characterization of Salmonella along the pork production chain in Jiangsu, China. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Jiang M, Yang C, Kwan PSL, Zhang L, Fan H, Jin Y, Sun L, Chen H, Li B, Chen Q, Wu Y, Guo Y, Shi Y, Liao M, Shi X, Liu J, Jiang L, Cai R, Deng Y, Sun Q, Yang R, Zhang Q, Cui Y, Hu Q. Rapid Multilateral and Integrated Public Health Response to a Cross-City Outbreak of Salmonella Enteritidis Infections Combining Analytical, Molecular, and Genomic Epidemiological Analysis. Front Microbiol 2022; 13:772489. [PMID: 35602015 PMCID: PMC9117964 DOI: 10.3389/fmicb.2022.772489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 03/28/2022] [Indexed: 11/13/2022] Open
Abstract
On September 21, 2019, the Shenzhen and Dongguan Centers for Disease Control and Prevention received notification of a large cluster of suspected gastroenteritis involving primarily children who sought medical care at hospitals throughout two adjacent cities in China, Shenzhen, and Dongguan. A joint outbreak response was promptly initiated across jurisdictions in a concerted effort between clinical microbiologists, epidemiologists, and public health scientists. Concurrently, multiplex PCRs were used for rapid laboratory diagnosis of suspected cases; epidemiological investigations were conducted to identify the outbreak source, complemented by near real-time multicenter whole-genome analyses completed within 34 h. Epidemiological evidence indicated that all patients had consumed egg sandwiches served on September 20 as snacks to children and staff at a nursery in Dongguan, located near Shenzhen. Salmonella Enteritidis was isolated from case-patients, food handlers, kitchenware, and sandwiches with kitchen-made mayonnaise. Whole-genome single-nucleotide polymorphism (SNP)-based phylogenetic analysis demonstrated a well-supported cluster with pairwise distances of ≤1 SNP between genomes for outbreak-associated isolates, providing the definitive link between all samples. In comparison with historical isolates from the same geographical region, the minimum pairwise distance was >14 SNPs, suggesting a non-local outbreak source. Genomic source tracing revealed the possible transmission dynamics of a S. Enteritidis clone throughout a multi-provincial egg distribution network. The efficiency and scale with which multidisciplinary and integrated approaches were coordinated in this foodborne disease outbreak response was unprecedented in China, leading to the timely intervention of a large cross-jurisdiction Salmonella outbreak.
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Affiliation(s)
- Min Jiang
- Shenzhen Major Infectious Disease Control Key Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Chao Yang
- Shenzhen Major Infectious Disease Control Key Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Patrick S L Kwan
- Shenzhen Major Infectious Disease Control Key Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Liping Zhang
- Microbiology Laboratory, Dongguan Center for Disease Control and Prevention, Guangdong, China
| | - Hang Fan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yujuan Jin
- Microbiology Laboratory, Longgang District Center for Disease Control and Prevention, Shenzhen, China
| | - Lifang Sun
- Department of Laboratory Medicine, Shenzhen Children's Hospital, Shenzhen, China
| | - Hongyu Chen
- Department of Laboratory Medicine, Shenzhen Children's Hospital, Shenzhen, China
| | - Baisheng Li
- Microbiology Laboratory, Guangdong Center for Disease Control and Prevention, Guangdong, China
| | - Qiuxia Chen
- Microbiology Laboratory, Guangdong Center for Disease Control and Prevention, Guangdong, China
| | - Yarong Wu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yan Guo
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yuanguo Shi
- Division of Biohazard Inspection and Testing, Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen, China
| | - Min Liao
- Division of Biohazard Inspection and Testing, Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen, China
| | - Xiaolu Shi
- Shenzhen Major Infectious Disease Control Key Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Jianping Liu
- Shenzhen Major Infectious Disease Control Key Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Lijuan Jiang
- Shenzhen Major Infectious Disease Control Key Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Rui Cai
- Shenzhen Major Infectious Disease Control Key Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Yinhua Deng
- Shenzhen Major Infectious Disease Control Key Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Qun Sun
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Ruifu Yang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Qiaoli Zhang
- Microbiology Laboratory, Dongguan Center for Disease Control and Prevention, Guangdong, China
| | - Yujun Cui
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Qinghua Hu
- Shenzhen Major Infectious Disease Control Key Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
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35
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Lin Y, Yang L, Qiu S, Yang C, Wang K, Li J, Jia L, Li P, Song H. Rapid Identification and Source Tracing of a Salmonella Typhimurium Outbreak in China by Metagenomic and Whole-Genome Sequencing. Foodborne Pathog Dis 2022; 19:259-265. [PMID: 35420907 DOI: 10.1089/fpd.2021.0072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Salmonella spp. are among the most prevalent foodborne pathogens. Rapid identification of etiologic agents during foodborne outbreaks is of great importance. In this study, we report a traceback investigation of a Salmonella outbreak in China. Metagenomic sequencing of suspected food samples was performed on MinION and MiSeq platforms. Real-time nanopore sequencing analysis identified reads belonging to the Enterobacteriaceae family. MiSeq sequencing identified 63 reads specifically mapped to Salmonella. Conventional methods including quantitative-PCR and culture-based isolation confirmed as Salmonella enterica serovar Typhimurium. The foodborne outbreak of Salmonella Typhimurium was further recognized by whole-genome sequencing and pulsed-field gel electrophoresis analysis. Our study demonstrates the ability of metagenomic sequencing to rapidly identify enteric pathogens directly from food samples. These results highlight the capacity of metagenomic sequencing to deliver actionable information rapidly and to expedite the tracing and identification of etiologic agents during foodborne outbreaks.
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Affiliation(s)
- Yanfeng Lin
- Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, China.,Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Lang Yang
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Shaofu Qiu
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Chaojie Yang
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Kaiying Wang
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Jinhui Li
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Leili Jia
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Peng Li
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Hongbin Song
- Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, China.,Chinese PLA Center for Disease Control and Prevention, Beijing, China
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36
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Shen W, Chen H, Geng J, Wu RA, Wang X, Ding T. Prevalence, serovar distribution, and antibiotic resistance of Salmonella spp. isolated from pork in China: A systematic review and meta-analysis. Int J Food Microbiol 2022; 361:109473. [PMID: 34768041 DOI: 10.1016/j.ijfoodmicro.2021.109473] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 10/28/2021] [Accepted: 11/03/2021] [Indexed: 12/23/2022]
Abstract
The epidemiological characteristics of Salmonella spp. in pork have been widely studied in China, but the results remain inconsistent. This study aimed to summarize the epidemiological characteristics of Salmonella spp. isolated from pork, including its prevalence, serovar distribution, and antibiotic resistance rate. We systematically reviewed published studies on Salmonella spp. isolated from pork in China between 2000 and 2020 in two Chinese and three English databases and quantitatively summarized its prevalence, serovar distribution, and antibiotic resistance using meta-analysis methods. Furthermore, we conducted subgroup analysis and meta-regression to explore the source of the heterogeneity from historical changes and regional difference perspectives. Ninety-one eligible studies published between 2000 and 2020 were included. The meta-analysis showed that the pooled prevalence of Salmonella isolated from pork was 0.17 (95% CI: 0.14, 0.20), with a detected growing trend over time. For the proportions of serovars, Derby (0.32, 95% CI: 0.26, 0.38), Typhimurium (0.10, 95% CI: 0.07, 0.15) and London (0.05, 95% CI: 0.03, 0.08) were dominant in these studies. The antibiotic resistance rates were high for tetracycline (0.68, 95% CI: 0.59, 0.77), sulfisoxazole (0.65, 95% CI: 0.45, 0.83), ampicillin (0.43, 95% CI: 0.34, 0.53), streptomycin (0.42, 95% CI: 0.29, 0.56), and sulfamethoxazole (0.42, 95% CI: 0.25, 0.60). The results of this study revealed a high prevalence, the regional characteristics of serovar distribution, and the severe challenges of antibiotic resistance of Salmonella originating from pork in China, suggesting the potential increasing risk and disease burden. Therefore, it is necessary to improve the prevention and control strategies of Salmonella in pork.
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Affiliation(s)
- Wangwang Shen
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Hui Chen
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; Department of Big Data in Health Science, School of Public Health, Zhejiang University, Hangzhou 310058, China
| | - Jiawei Geng
- Center for Global Health, School of Public Health, Zhejiang University, Hangzhou 310058, China
| | - Ricardo A Wu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Xiang Wang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Tian Ding
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China.
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XU FR, YANG Y. Surveillance for foodborne diseases in a sentinel hospital in Jinhua city, Midwest of Zhejiang province, China from 2016–2019. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.94321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Affiliation(s)
| | - Yang YANG
- Zhejiang University School of Medicine, China
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38
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Feng ZS, Li JY, Zhang JY, Li FY, Guan HX, Zhang RQ, Liu H, Guo Q, Shen XX, Kan B, Ma XJ. Development and evaluation of a sensitive recombinase aided amplification assay for rapid detection of Vibrio parahaemolyticus. J Microbiol Methods 2022; 193:106404. [PMID: 34990645 DOI: 10.1016/j.mimet.2021.106404] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/29/2021] [Accepted: 12/29/2021] [Indexed: 12/27/2022]
Abstract
Vibrio parahaemolyticus (V. parahaemolyticus) is a widely distributed pathogen in the coastal areas, which causes food poisoning and leads to gastroenteritis and sepsis. Therefore, developing a simple, sensitive, and rapid detection method for V. parahaemolyticus is a major concern globally. This study established a sensitive and rapid technique based on recombinase aided amplification (RAA) to detect V. parahaemolyticus. The RAA reaction was carried out successfully at 39 °C within 30 min. The sensitivity of the RAA assay was 101 copies/μL using the recombinant plasmid and 10-3 ng/μL using the V. parahaemolyticus strain. In addition, RAA directly detected 7 × 103 CFU/mL of simulated fecal samples and 0.1 CFU/mL after enrichment for 4 h. The sensitivity and specificity of the RAA assay using fecal and fish samples were 100% similar to that of the real-time PCR. We conclude that the RAA assay is an ideal screening method for detecting V. parahaemolyticus due to its rapidity, high accuracy, and simplicity in operation.
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Affiliation(s)
- Zhi-Shan Feng
- Hebei Medical University, Shijiazhuang 050031, Hebei, China; Hebei General Hospital, Shijiazhuang 050070, Hebei, China
| | - Jing-Yi Li
- Hebei Medical University, Shijiazhuang 050031, Hebei, China; Hebei General Hospital, Shijiazhuang 050070, Hebei, China; NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Jing-Yun Zhang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute forCommunicable DiseaseControl and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
| | - Feng-Yu Li
- Hebei Medical University, Shijiazhuang 050031, Hebei, China; Hebei General Hospital, Shijiazhuang 050070, Hebei, China; NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Hong-Xia Guan
- Wuxi Center for Disease Control and Prevention, Wuxi 214023, Jiangsu, China
| | - Rui-Qing Zhang
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
| | - Hong Liu
- Shandong Provincial Research Center for Bioinformatic Engineering and Technique, School of Life Sciences and Medicine, Shandong University of Technology, Zibo255049, Shandong, China
| | - Qi Guo
- Laboratory of Virology, Beijing Key Laboratory ofEtiology of Viral Diseases in Children, Capital Institute of Pediatrics, Beijing 100020, China
| | - Xin-Xin Shen
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
| | - Biao Kan
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute forCommunicable DiseaseControl and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
| | - Xue-Jun Ma
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
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40
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Yang C, Li Y, Zuo L, Jiang M, Zhang X, Xie L, Luo M, She Y, Wang L, Jiang Y, Wu S, Cai R, Shi X, Cui Y, Wan C, Hu Q. Genomic Epidemiology and Antimicrobial Susceptibility Profile of Enterotoxigenic Escherichia coli From Outpatients With Diarrhea in Shenzhen, China, 2015-2020. Front Microbiol 2021; 12:732068. [PMID: 34777281 PMCID: PMC8581654 DOI: 10.3389/fmicb.2021.732068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 10/08/2021] [Indexed: 11/19/2022] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC) is the leading cause of severe diarrhea in children and the most common cause of diarrhea in travelers. However, most ETEC infections in Shenzhen, China were from indigenous adults. In this study, we characterized 106 ETEC isolates from indigenous outpatients with diarrhea (77% were adults aged >20 years) in Shenzhen between 2015 and 2020 by whole-genome sequencing and antimicrobial susceptibility testing. Shenzhen ETEC isolates showed a remarkable high diversity, which belonged to four E. coli phylogroups (A: 71%, B1: 13%, E: 10%, and D: 6%) and 15 ETEC lineages, with L11 (25%, O159:H34/O159:H43, ST218/ST3153), novel L2/4 (21%, O6:H16, ST48), and L4 (15%, O25:H16, ST1491) being major lineages. Heat-stable toxin (ST) was most prevalent (76%, STh: 60% STp: 16%), followed by heat-labile toxin (LT, 17%) and ST + LT (7%). One or multiple colonization factors (CFs) were identified in 68 (64%) isolates, with the common CFs being CS21 (48%) and CS6 (34%). Antimicrobial resistance mutation/gene profiles of genomes were concordant with the phenotype testing results of 52 representative isolates, which revealed high resistance rate to nalidixic acid (71%), ampicillin (69%), and ampicillin/sulbactam (46%), and demonstrated that the novel L2/4 was a multidrug-resistant lineage. This study provides novel insight into the genomic epidemiology and antimicrobial susceptibility profile of ETEC infections in indigenous adults for the first time, which further improves our understanding on ETEC epidemiology and has implications for the development of vaccine and future surveillance and prevention of ETEC infections.
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Affiliation(s)
- Chao Yang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China.,Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China.,State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yinghui Li
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Le Zuo
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Min Jiang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Xianglilan Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Li Xie
- School of Public Health, University of South China, Hengyang, China
| | - Miaomiao Luo
- School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Yiying She
- School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Lei Wang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Yixiang Jiang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Shuang Wu
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Rui Cai
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Xiaolu Shi
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Yujun Cui
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Chengsong Wan
- Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Qinghua Hu
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
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Almejhim M, Aljeldah M, Elhadi N. Improved isolation and detection of toxigenic Vibrio parahaemolyticus from coastal water in Saudi Arabia using immunomagnetic enrichment. PeerJ 2021; 9:e12402. [PMID: 34760388 PMCID: PMC8559605 DOI: 10.7717/peerj.12402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 10/07/2021] [Indexed: 11/30/2022] Open
Abstract
Background Vibrio parahaemolyticus is recognized globally as a cause of foodborne gastroenteritis and its widely disseminated in marine and coastal environment throughout the world. The main aim of this study was conducted to investigate the presence of toxigenic V. parahaemolyticus in costal water in the Eastern Province of Saudi Arabia by using immunomagnetic separation (IMS) in combination with chromogenic Vibrio agar medium and PCR targeting toxR gene of species level and virulence genes. Methods A total of 192 seawater samples were collected from five locations and enriched in alkaline peptone water (APW) broth. One-milliliter portion from enriched samples in APW were mixed with an immunomagnetic beads (IMB) coated with specific antibodies against V. parahaemolyticus polyvalent K antisera and separated beads with captured bacteria streaked on thiosulfate citrate bile salts sucrose (TCBS) agar and CHROMagar Vibrio (CaV) medium. Results Of the 192 examined seawater samples, 38 (19.8%) and 44 (22.9%) were positive for V. parahaemolyticus, producing green and mauve colonies on TCBS agar and CaV medium, respectively. Among 120 isolates of V. parahaemolyticus isolated in this study, 3 (2.5%) and 26 (21.7%) isolates of V. parahaemolyticus isolated without and with IMB treatment tested positive for the toxin regulatory (toxR) gene, respectively. Screening of the confirmed toxR gene-positive isolates revealed that 21 (17.5%) and 3 (2.5%) were positive for the thermostable direct hemolysin (tdh) encoding gene in strains isolated with IMB and without IMB treatment, respectively. None of the V. parahaemolyticus strains tested positive for the thermostable related hemolysin (trh) gene. In this study, we found that the CaV medium has no advantage over TCBS agar if IMB concentration treatment is used during secondary enrichment steps of environmental samples. The enterobacterial repetitive intergenic consensus (ERIC)-PCR DNA fingerprinting analysis revealed high genomic diversity, and 18 strains of V. parahaemolyticus were grouped and identified into four identical ERIC clonal group patterns. Conclusions The presented study reports the first detection of tdh producing V. parahaemolyticus in coastal water in the Eastern Province of Saudi Arabia.
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Affiliation(s)
- Mariam Almejhim
- Department of Clinical Laboratory Science, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Mohammed Aljeldah
- Department of Clinical Laboratory Science, College of Applied Medical Sciences, University of Hafr Al-Batin, Hafr Al-Batin, Saudi Arabia
| | - Nasreldin Elhadi
- Department of Clinical Laboratory Science, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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42
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Zhang Q, Wang X, Kang Y, Sun H, Liang Y, Liu J, Su Z, Dan J, Luo L, Yue T, Wang J, Zhang W. Natural Products Self-Assembled Nanozyme for Cascade Detection of Glucose and Bacterial Viability in Food. Foods 2021; 10:foods10112596. [PMID: 34828877 PMCID: PMC8618841 DOI: 10.3390/foods10112596] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/20/2021] [Accepted: 10/25/2021] [Indexed: 01/22/2023] Open
Abstract
Sugar content and bacterial contamination levels are important indicators for the health and safety of food, respectively. Therefore, it is important to construct a method that can detect both glucose and bacterial activity. Herein, natural compounds (gallic acid and glucose oxidase) were assembled into nanozyme (GOx@GA-Fe (ii)) for mild cascade detection. The nanozyme catalyzes glucose to produce hydrogen peroxide, which is then converted to ·OH and oxidized colorless TMB from blue oxidized TMB. Under the optimal conditions, the method has a good linear relationship in the glucose concentration range of 1–500 μM (R2 = 0.993) with minimum detection concentration of 0.43 μM. Based on the glucose consumption of bacteria metabolism, the cascade reaction was then applied to detect the viability of 5 common bacteria. As such, a cascade method based on a natural self-assembled nanozyme was fabricated to monitor the quality of food.
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43
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Abstract
AbstractThe present study aimed to use the autoregressive integrated moving average (ARIMA) model to forecast foodborne disease incidence in Shenzhen city and help guide efforts to prevent foodborne disease. The data of foodborne diseases in Shenzhen comes from the infectious diarrhea surveillance network, community foodborne disease surveillance network, and student foodborne disease surveillance network. The incidence data from January 2012 to December 2017 was used for the model-constructing, while the data from January 2018 to December 2018 was used for the model-validating. The mean absolute percentage error (MAPE) was used to assess the performance of the model. The monthly foodborne disease incidence from January 2012 to December 2017 in Shenzhen was between 954 and 32,863 with an incidence rate between 4.77 and 164.32/100,000 inhabitants. The ARIMA (1,1,0) was an adequate model for the change in monthly foodborne disease incidence series, yielding a MAPE of 5.34%. The mathematical formula of the ARIMA (1,1,0) model was (1 − B) × log(incidencet) = 0.04338 + εt/(1 + 0.51106B). The predicted foodborne disease incidences in the next three years were 635,751, 1,069,993, 1,800,838, respectively. Monthly foodborne disease incidence in Shenzhen were shown to follow the ARIMA (1,1,0) model. This model can be considered adequate for predicting future foodborne disease incidence in Shenzhen and can aid in the decision-making processes.
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44
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Ultrafast bacterial cell lysis using a handheld corona treater and loop-mediated isothermal amplification for rapid detection of foodborne pathogens. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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45
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Drigo B, Brunetti G, Aleer SC, Bell JM, Short MD, Vasileiadis S, Turnidge J, Monis P, Cunliffe D, Donner E. Inactivation, removal, and regrowth potential of opportunistic pathogens and antimicrobial resistance genes in recycled water systems. WATER RESEARCH 2021; 201:117324. [PMID: 34242935 DOI: 10.1016/j.watres.2021.117324] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 04/30/2021] [Accepted: 05/30/2021] [Indexed: 06/13/2023]
Abstract
With two thirds of the global population living in areas affected by water scarcity, wastewater reuse is actively being implemented or explored by many nations. There is a need to better understand the efficacy of recycled water treatment plants (RWTPs) for removal of human opportunistic pathogens and antimicrobial resistant microorganisms. Here, we used a suite of probe-based multiplex and SYBR green real-time PCR assays to monitor enteric opportunistic pathogens (EOPs; Acinetobacter baumannii, Arcobacter butzlieri, Escherichia coli, Enterococcus faecalis, Klebsiella pneumoniae, Legionella spp., Listeria monocytogenes, Pseudomonas aeruginosa, Salmonella Enteritidis, Streptococcus spp.) and antimicrobial resistance genes (ARGs; qnrS, blaSHV, blaTEM, blaGES, blaKPC, blaIMI, blaSME, blaNDM, blaVIM, blaIMP, blaOXA-48-like, mcr-1 and mcr-3) of key concern from an antimicrobial resistance (AMR), waterborne and foodborne disease perspective. The class 1 integron-integrase gene (intl1) was quantified as a proxy for multi-drug resistance. EOPs, intl1 and ARGs absolute abundance (DNA and RNA) and metabolic activity (RNA) was assessed through three RWTPs with differing treatment trains. Our results indicate that RWTPs produced high quality recycled water for non-potable reuse by removing >95% of EOPs and ARGs, however, subpopulations of EOPs and ARGs survived disinfection and demonstrated potential to become actively growing members of the recycled water and distribution system microbiomes. The persistence of functional intl1 suggests that significant genetic recombination capacity remains in the recycled water, along with the likely presence of multi-drug resistant bacteria. Results provide new insights into the persistence and growth of EOPs, and prevalence and removal of ARGs in recycled water systems. These data will contribute towards the emerging evidence base of AMR risks in recycled water to inform quantitative risk-based policy development regarding water recycling schemes.
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Affiliation(s)
- Barbara Drigo
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia.
| | - Gianluca Brunetti
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia
| | - Samuel C Aleer
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia
| | - Jan M Bell
- Australian Centre for Antimicrobial Resistance Ecology, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Michael D Short
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia
| | - Sotirios Vasileiadis
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - John Turnidge
- Australian Centre for Antimicrobial Resistance Ecology, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Paul Monis
- South Australian Water Corporation, Adelaide, SA 5000, Australia; Future Industries Institute and ARC Centre of Excellence for Convergent Bio and Nano Science, University of South Australia, Adelaide, SA 5095, Australia
| | - David Cunliffe
- Department for Health and Wellbeing, Adelaide, 5000, South Australia, Australia
| | - Erica Donner
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia
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46
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Li W, Cui Q, Bai L, Fu P, Han H, Liu J, Guo Y. Application of Whole-Genome Sequencing in the National Molecular Tracing Network for Foodborne Disease Surveillance in China. Foodborne Pathog Dis 2021; 18:538-546. [PMID: 34339263 DOI: 10.1089/fpd.2020.2908] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
National Molecular Tracing Network for Foodborne Disease Surveillance (TraNet) was launched in 2013, which is the only real-time whole-genome sequencing (WGS)-based subtyping network in China for effective foodborne disease surveillance. TraNet covers three levels of public health laboratories, national, provincial, and municipal. The TraNet national databases have a total of more than 54,000 entries representing seven common foodborne bacteria from humans, food, and environments. Raw sequence data are uploaded to TraNet by Data Delivery Center. Assembled sequence data, pulsed-field gel electrophoresis (PFGE) profiles, antibiotic resistance patterns, and epidemiological data are submitted to national pathogen-specific databases managed by China National Center for Food Safety Risk Assessment. PFGE patterns and WGS-based subtyping are compared for rapid differentiation of clusters of geographically diverse foodborne infections. WGS-based TraNet has played significant roles in improving foodborne disease surveillance in China for rapid outbreak investigation, source tracking, and cluster analysis of particular pathogens across the country.
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Affiliation(s)
- Weiwei Li
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment (CFSA), Beijing, China
| | - Qingpo Cui
- Beijing GenesClouds Information Science and Technology, Beijing, China
| | - Li Bai
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment (CFSA), Beijing, China
| | - Ping Fu
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment (CFSA), Beijing, China
| | - Haihong Han
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment (CFSA), Beijing, China
| | - Jikai Liu
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment (CFSA), Beijing, China
| | - Yunchang Guo
- Division of Risk Surveillance II, China National Center for Food Safety Risk Assessment (CFSA), Beijing, China
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47
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He M, Lei T, Jiang F, Zhang J, Zeng H, Wang J, Chen M, Xue L, Wu S, Ye Q, Pang R, Ding Y, Wu Q. Genetic Diversity and Population Structure of Vibrio parahaemolyticus Isolated From Clinical and Food Sources. Front Microbiol 2021; 12:708795. [PMID: 34385993 PMCID: PMC8353399 DOI: 10.3389/fmicb.2021.708795] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 07/02/2021] [Indexed: 01/22/2023] Open
Abstract
Vibrio parahaemolyticus is a common foodborne pathogen that causes gastroenteritis worldwide. Determining its prevalence and genetic diversity will minimize the risk of infection and the associated economic burden. Multilocus sequence typing (MLST) is an important tool for molecular epidemiology and population genetic studies of bacteria. Here, we analyzed the genetic and evolutionary relationships of 162 V. parahaemolyticus strains isolated in the Guangdong Province, China, using MLST. In the study, 120 strains were isolated from food samples, and 42 strains were isolated from clinical samples. All strains were categorized into 100 sequence types (STs), of which 58 were novel (48 from the food isolates and 10 from the clinical isolates). ST415 was the most prevalent ST among the food isolates, while ST3 was the most prevalent ST among the clinical isolates. Further, 12 clonal complexes, 14 doublets, and 73 singletons were identified in all ST clusters, indicating high genetic diversity of the analyzed strains. At the concatenated sequence level, non-synonymous sites in both, food and clinical isolates, were associated with purifying selection. Of note, the dN/dS ration was greater than 1 for some housekeeping genes in all isolates. This is the first time that some loci under positive selection were identified. These observations confirm frequent recombination events in V. parahaemolyticus. Recombination was much more important than mutation for genetic heterogeneity of the food isolates, but the probabilities of recombination and mutations were almost equal for the clinical isolates. Based on the phylogenetic analysis, the clinical isolates were concentrated in the maximum-likelihood tree, while the food isolates were heterogeneously distributed. In conclusion, the food and clinical isolates of V. parahaemolyticus from the Guangdong Province are similar, but show different evolutionary trends. This may help prevent large-scale spread of highly virulent strains and provides a genetic basis for the discovery of microevolutionary relationships in V. parahaemolyticus populations.
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Affiliation(s)
- Min He
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, China.,Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Tao Lei
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Fufeng Jiang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China.,School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
| | - Jumei Zhang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Haiyan Zeng
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Juan Wang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Moutong Chen
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Liang Xue
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Shi Wu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Qinghua Ye
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Rui Pang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Yu Ding
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Qingping Wu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
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48
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Han H, Pires SM, Ellis-Iversen J, Tang Z, Zhang X, Liu J, Li W, Cui Q, Zou J, Fu P, Guo Y. Prevalence of Antimicrobial Resistant of Vibrio parahaemolyticus Isolated from Diarrheal Patients - Six PLADs, China, 2016-2020. China CDC Wkly 2021; 3:615-619. [PMID: 34594947 PMCID: PMC8393055 DOI: 10.46234/ccdcw2021.135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 06/10/2021] [Indexed: 11/14/2022] Open
Abstract
What is already known on this topic? Vibrio parahaemolyticus (V. parahaemolyticus) is frequently resistant to common antimicrobials such as ampicillin and generally highly susceptible to most clinically used antimicrobials. What is added by this report? V. parahaemolyticus were highly resistant to cefazolin and ampicillin: 94.4% and 37.0%, respectively. However, it was below 3% resistance to all 10 other antimicrobials including clinically relevant agents and even imipenem. The overall levels of antimicrobial resistance and multidrug resistance were 95.1% and 3.3%, respectively. The distribution of antimicrobial resistance and the multidrug resistance had regional, temporal, sexual, and isolated source strain variation. What are the implications for public health practice? This study provides data on drug resistance of V. parahaemolyticus in Chinese clinical settings, which will help develop a public health strategy.
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Affiliation(s)
- Haihong Han
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Chinese Academy of Medical Science Research Unit (No.2019RU014), China National Center for Food Safety Risk Assessment, Beijing, China
| | - Sara M Pires
- Risk Benefit Research Group, Division of Diet, Disease Prevention and Toxicology, National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | | | - Zhen Tang
- Jiangsu Center for Disease Prevention and Control, Nanjing, Jiangsu, China
| | - Xiaoai Zhang
- Beijing Center for Disease Prevention and Control, Institute for Nutrition and Hygiene, Beijing, China
| | - Jikai Liu
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Chinese Academy of Medical Science Research Unit (No.2019RU014), China National Center for Food Safety Risk Assessment, Beijing, China
| | - Weiwei Li
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Chinese Academy of Medical Science Research Unit (No.2019RU014), China National Center for Food Safety Risk Assessment, Beijing, China
| | - Qingpo Cui
- Beijing Zoom Tech Science and Technology Co., Ltd, Beijing, China
| | - Jing Zou
- Beijing Zoom Tech Science and Technology Co., Ltd, Beijing, China
| | - Ping Fu
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Chinese Academy of Medical Science Research Unit (No.2019RU014), China National Center for Food Safety Risk Assessment, Beijing, China
| | - Yunchang Guo
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Chinese Academy of Medical Science Research Unit (No.2019RU014), China National Center for Food Safety Risk Assessment, Beijing, China
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49
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He S, Shi X. Microbial Food Safety in China: Past, Present, and Future. Foodborne Pathog Dis 2021; 18:510-518. [PMID: 34242111 DOI: 10.1089/fpd.2021.0009] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Food safety is a major public health issue worldwide, especially in heavily populated countries such as China. As in other countries, the predominant food safety issues in China are foodborne diseases caused by microbial pathogens. Hence, this review provides a systematic overview on microbial food safety in the past, present, and future in China. Management of microbial food safety in China is generally divided into three stages: Stage I before 2000, Stage II from 2000 to 2009, and Stage III from 2010 to present. At Stage I, China's main food concern gradually shifted from food security to food safety. At Stage II, foodborne pathogen surveillance was initiated and gradually became a focus of microbial food safety marked by the establishment of national food contamination monitoring system in 2000 and the promulgation of China Food Safety Law in 2009, although chemical food safety was considered a priority issue during this stage. At Stage III, microbial food safety was recognized as a high priority supported by many national food safety policies such as the launch of a national foodborne disease molecular tracing network in 2013 and the revision of China Food Safety Law in 2015. Advancement in food safety education and research support by central and local governments has also made significant contributions to tackling and solving microbial food safety problems. Management in the future should be focused on active involvement of food industries in mitigating microbial risks by introducing ISO 22000, regulatory enforcement to oversee compliances to standards and rules, and application of molecular tools for fast detection and source tracking to support decision-making. Future research efforts may include, but are not limited to, exploitation of interaction mechanisms among pathogenic bacteria, food and gut microbiota, smart traceability of microbial hazards, and development of novel antimicrobial strategies.
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Affiliation(s)
- Shoukui He
- MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology, State Key Lab of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, China
| | - Xianming Shi
- MOST-USDA Joint Research Center for Food Safety, School of Agriculture and Biology, State Key Lab of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, China
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50
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Wang W, Guo S, Gao Y, Liang X, Liu L, Pan S. Comparative immunogenicity of outer membrane protein K and whole-cell antigens of Vibrio parahaemolyticus for diagnosis. Lett Appl Microbiol 2021; 73:460-470. [PMID: 34231245 DOI: 10.1111/lam.13536] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 07/01/2021] [Accepted: 07/01/2021] [Indexed: 11/25/2022]
Abstract
The immunogenicity of soluble outer membrane protein K (OmpK)- small ubiquitin-like modifier, OmpK inclusion bodies, formalin, and heat-killed Vibrio parahaemolyticus cells were prepared and studied in a mouse model. The results of whole-cell ELISA and Western blot (WB) revealed that the serum against soluble OmpK and OmpK inclusion bodies reacted only with homologous V. parahaemolyticus. Furthermore, recombinant OmpK proteins were not recognized by the serum against whole-cell V. parahaemolyticus antigens. Unexpectedly, the serum against formalin and heat-killed V. parahaemolyticus reacted broadly with homologous (an immunization strain) and heterologous (non-immunization strains) V. parahaemolyticus and Vibrio species. The WB results revealed that the serum against the two V. parahaemolyticus whole-cell antigens primarily reacted with proteins that were approximately 100, 70, 36, 28, and 22 kDa in the cell lysates from different Vibrio strains, rather than the recombinant OmpK. The 70 and 28 kDa proteins exhibited specificity to Vibrio species, while the 22 kDa protein was more specific to V. parahaemolyticus. This study showed the limitation of recombinant OmpK to prepare diagnostic antibodies and revealed several specific Omps of Vibrio sp. and V. parahaemolyticus that were promising in diagnosis and vaccine development.
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Affiliation(s)
- W Wang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, Jiangsu, China.,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, Jiangsu, China.,Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, Jiangsu, China
| | - S Guo
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, Jiangsu, China.,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, Jiangsu, China
| | - Y Gao
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, Jiangsu, China.,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, Jiangsu, China
| | - X Liang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, Jiangsu, China.,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, Jiangsu, China
| | - L Liu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, Jiangsu, China.,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, Jiangsu, China
| | - S Pan
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, Jiangsu, China.,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, Jiangsu, China.,Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, Jiangsu, China
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