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Foodborne Pathogens and Disease

María Cevallos-Almeida, Catherine Houdayer, Valérie Rose, Yann Bailly, Frédéric Paboeuf, Christelle Fablet, Martine Denis, Annaëlle Kerouanton
The monophasic variant of Salmonella Typhimurium is highly prevalent in human and in pork. However, little is known about colonization dynamics and serology in pigs. We orally inoculated 24 seven-week-old piglets with 109 CFU/pig of a porcine strain of monophasic Salmonella Typhimurium in an experimental trial. Three groups of eight piglets were orally inoculated and monitored for 21, 49, or 84 days post-inoculation until necropsied. From 3 days post-inoculation to necropsy, individual feces were sampled twice weekly and blood once weekly...
July 16, 2018: Foodborne Pathogens and Disease
Govindaraj Dev Kumar, Robert C Williams, Nammalwar Sriranganathan, Renee R Boyer, Joseph D Eifert
Salmonella serotypes linked to tomato-associated outbreaks were evaluated for survival in soil and water over a 40-day period. Salmonella enterica serotypes Anatum, Baildon, Braenderup, Montevideo, Newport, and Javiana were inoculated separately into sterile soil and water, followed by plating onto TSAYE and XLT4 at 10-day intervals. Biofilm production by Salmonella serotypes was measured on both quartz particles (soil surrogate) and glass coverslips, and was evaluated using a crystal violet dye assay. Salmonella populations in soil and water over 40 days indicated no significant differences between Salmonella serotypes tested (p > 0...
July 16, 2018: Foodborne Pathogens and Disease
Yuanyang Yi, Lingling Su, Bin Li, Shanchun Li, Baojiang Zhang, Yan Su
BACKGROUND: Diseases caused by livestock-associated methicillin-resistant Staphylococcus aureus (MRSA) are an important global public health concern, and MRSA is increasingly being isolated in bovine milk. However, information on the genotype and antimicrobial resistance of MRSA in bovine milk in Xinjiang is limited. The objective of this study was to determine the antimicrobial-susceptible phenotypes and genotypes of the circulating MRSA clone isolated in bovine mastits milk samples in Xinjiang, China...
July 9, 2018: Foodborne Pathogens and Disease
Gloria Lopez-Valladares, Marie-Louise Danielsson-Tham, Wilhelm Tham
Listeriosis is a foodborne disease with a high fatality rate, and infection is mostly transmitted through ready-to-eat (RTE) foods contaminated with Listeria monocytogenes, such as gravad/smoked fish, soft cheeses, and sliced processed delicatessen (deli) meat. Food products/dishes stored in vacuum or in modified atmospheres and with extended refrigerator shelf lives provide an opportunity for L. monocytogenes to multiply to large numbers toward the end of the shelf life. Elderly, pregnant women, neonates, and immunocompromised individuals are particularly susceptible to L...
June 29, 2018: Foodborne Pathogens and Disease
Marsha Taylor, Joyce Cheng, Davendra Sharma, Olga Bitzikos, Reka Gustafson, Murray Fyfe, Richard Greve, Michelle Murti, Jason Stone, Lance Honish, Victor Mah, Nisha Punja, April Hexemer, Lorraine McIntyre, Bonnie Henry, Perry Kendall, Robin Atkinson, Enrico Buenaventura, Amalia Martinez-Perez, Eleni Galanis, The Outbreak Invesitigation Team
There has been a steady increase in illness incidence of Vibrio parahaemolyticus (Vp). The majority of illnesses are associated with consumption of raw oysters. In the summer of 2015, Canada experienced the largest outbreak associated with the consumption of raw oysters harvested from British Columbia (BC) coastal waters. Case investigation of laboratory-confirmed cases was conducted to collect information on exposures and to assist traceback. Investigations at processors and oyster sampling were conducted...
June 29, 2018: Foodborne Pathogens and Disease
Mohamed K Omer, Avelino Álvarez-Ordoñez, Miguel Prieto, Eystein Skjerve, Tekie Asehun, Ole Arne Alvseike
Our investigation focused on foodborne outbreaks related to meat and meat products, published in peer-reviewed journals in the period 1980-2015. Most of the outbreaks, investigated in this study, were caused by Escherichia coli and Salmonella, causing 33 and 21 outbreaks, respectively, mostly in Europe and the United States. In the E. coli outbreaks, the total number of reported cases was 1966, of which 1543 were laboratory confirmed. The number of cases requiring hospitalization was 476, of whom 233 cases had a hemolytic-uremic syndrome (HUS), and the reported deaths were 32...
June 29, 2018: Foodborne Pathogens and Disease
Narayan Paudyal, Hang Pan, Xiaoliang Li, Weihuan Fang, Min Yue
Salmonella enterica subspecies enterica serotype Enteritidis (S. Enteritidis) is one of the leading causes for human salmonellosis all over the world. We analyzed the surveillance data of 18 years on antimicrobial resistance profiling of S. Enteritidis collected and isolated by the National Antimicrobial Resistance Monitoring System (NARMS) from humans, chicken, and chicken breasts. Statistical tool based on the unique individual antibiotic minimum inhibitory concentration (MIC) profiling was used to compare antimicrobial resistance in the isolates...
June 21, 2018: Foodborne Pathogens and Disease
Jing Yuan, Luxin Wang
Kiwifruit (Actinidia deliciosa) is a high-acidity fruit, with two varieties available on the market. One is the green-fleshed, fuzzy, sweet but tangy-tasting kiwifruit, and the other is the yellow-fleshed variety called "golden" kiwifruit. While the whole kiwifruit is sold at room temperature at grocery stores, sliced kiwifruit is usually sold as a part of fruit salad in the refrigerated section. The survival of a five-strain Escherichia coli O157:H7 cocktail, a five-strain Salmonella cocktail, and a five-strain Listeria monocytogenes cocktail was evaluated on whole and sliced green and golden kiwifruit...
June 19, 2018: Foodborne Pathogens and Disease
Elisa Santovito, Donato Greco, Antonio F Logrieco, Giuseppina Avantaggiato
The population increase in the last century was the first cause of the industrialization of animal productions, together with the necessity to satisfy the high food demand and the lack of space and land for the husbandry practices. As a consequence, the farmers moved from extensive to intensive agricultural systems and introduced new practices, such as the administration of antimicrobial drugs. Antibiotics were then used as growth promoters and for disease prevention. The uncontrolled and continuous use of antibiotics contributed to the spread of antibiotic resistance in animals, and this had adverse impacts on human health...
June 6, 2018: Foodborne Pathogens and Disease
Dixie F Mollenkopf, Brittany De Wolf, Sydnee M Feicht, Johana K Cenera, Christy A King, Joany C van Balen, Thomas E Wittum
Antimicrobial resistant bacteria in retail meat pose a health hazard to the public, as does contamination of these products with Salmonella. Our aim was to determine the prevalence of Salmonella as well as Escherichia coli expressing AmpC and extended-spectrum beta-lactamase (ESBL) resistance phenotypes contaminating broiler transport cages and fresh, retail ground chicken meat. Sterile gauze sponges were used to collect duplicate cage floor samples from transport trailers that deliver market-ready birds to a single organic poultry-processing facility...
June 6, 2018: Foodborne Pathogens and Disease
Passoret Vounba, Kane Yaghouba, Cheikh Ndiaye, Julie Arsenault, John Morris Fairbrother, Rianatou Bada Alambédji
Avian pathogenic Escherichia coli (APEC), a subset of extraintestinal pathogenic E. coli (ExPEC), are the etiologic agent of avian colibacillosis, one of the main causes of economic losses in the poultry industry. The aim of this study was to characterize E. coli isolated from diseased chickens in Senegal to elucidate their virulence potential and antimicrobial resistance (AMR). A total of 58 isolates, each from a separate farm, were characterized for AMR, virulence, and AMR genes, phylogroup, serogroup, biofilm formation, and pulsed-field gel electrophoresis, and for two isolates, whole-genome sequencing (WGS)...
May 31, 2018: Foodborne Pathogens and Disease
Fei Wang, Aubrey Mendonça, Byron F Brehm-Stecher, James Dickson, Alan DiSpirito, Angela Shaw, Emalie Thomas-Popo
Nonendospore-forming pathogenic bacteria in the long-term survival (LTS) phase can remain viable for months or years and may show reduced susceptibility to various antimicrobial interventions. In the present study, we investigated the response of LTS phase Salmonella enterica serovar Typhimurium (ATCC 14028) to ultraviolet (UV) radiation in 0.85% (w/v) saline and apple juice and the extent of sublethal injury in LTS phase survivors. The LTS-phase Salmonella Typhimurium cells were cultured at 35°C for 14 days in tryptic soy broth with 0...
May 31, 2018: Foodborne Pathogens and Disease
Yan-Ping Wu, Jin-Rong Bai, Elena Grosu, Kai Zhong, Li-Jin Liu, Meng-Meng Tang, Yi-Na Huang, Hong Gao
The adherence and biofilm formation of Staphylococcus aureus on food contact surfaces are a major concern for the food industry. Development of antibiofilm agents from polyphenols has drawn much attention due to their potent activity. The present study explored the antibacterial and antibiofilm activities of 2R,3R-dihydromyricetin (DMY) against S. aureus ATCC 29213. It was found that DMY exerted excellent antibacterial and bactericidal properties against S. aureus with minimum inhibitory concentration and minimum bactericidal concentration values of 0...
May 30, 2018: Foodborne Pathogens and Disease
Shaimaa Hatab, Kaihe Lin, Wenhua Miao, Meiling Chen, Jiheng Lin, Shanggui Deng
Ethanolic extracts of green tea leaves (GTE) and fenugreek seeds (FSE) were screened for their antibacterial activity against four food pathogenic strains using disc diffusion method. The two extracts revealed antimicrobial activity against selected bacterial strains. GTE showed the highest antibacterial activity to Escherichia coli and Staphylococcus aureus at a concentration of 1% with inhibition zone equal to 29.45 ± 0.64 mm and 25.68 ± 1.2 mm, respectively. In addition, the effect of GTE and FSE combined with chitosan coating on the shelf life of Pacific white shrimp (PWS) (Litopenaeus vannamei) during refrigerated storage have been studied...
May 29, 2018: Foodborne Pathogens and Disease
Wei Cong, Chun-Xue Zhou, Long Chen, Yang Zou, Wei-Li Wang, Qing-Feng Meng, Ai-Dong Qian
Currently, there is no information available on the detection of Toxoplasma gondii and Neospora caninum in the tissues of Tolai hares in China. This study aimed to investigate the prevalence of these protozoan parasites in Tolai hares obtained from Shandong province, eastern China, between January 2016 and June 2017. Serum and brain tissue samples of 358 Tolai hares were obtained and detected for the presence of antibody and parasite DNAs by serodiagnosis and polymerase chain reaction (PCR), respectively. The seroprevalence of T...
May 21, 2018: Foodborne Pathogens and Disease
Kathe E Bjork, Victoria Fields, Lindsey P Garber, Christine A Kopral
Nontyphoidal Salmonella is an important foodborne pathogen with diverse serotypes occurring in animal and human populations. The prevalence of the organism on swine farms has been associated with numerous risk factors, and although there are strong veterinary public health controls for preventing Salmonella from entering food, there remains interest in eradicating or controlling the organism in the preharvest environment. In this study, using data collected via the U.S. Department of Agriculture (USDA) National Animal Health Monitoring System Swine 2012 study, we describe nontyphoidal Salmonella and specific serotype prevalence on U...
May 15, 2018: Foodborne Pathogens and Disease
Zengfeng Zhang, Chenyang Cao, Bin Liu, Xuebin Xu, Yanfei Yan, Shenghui Cui, Sheng Chen, Jianghong Meng, Baowei Yang
We characterized antibiotic resistance profiles, antibiotic resistance-associated genes, and pulsed-field gel electrophoresis (PFGE) patterns of 145 Salmonella enterica serotype Typhimurium isolates from human infections and retail foods that were possibly responsible for salmonellosis outbreaks from 2008 to 2012 in Shanghai, China. Resistance to at least three antibiotics was found in 66.7% of chicken isolates, 76.5% of duck isolates, 77.8% of pork isolates, and 80.5% of human isolates. Seven antibiotic resistance phenotypes were detected in chicken isolates, 16 in pork isolates, 17 in duck isolates, and 50 in human isolates...
May 9, 2018: Foodborne Pathogens and Disease
Jiansen Gong, Linlin Zhuang, Di Zhang, Ping Zhang, Xinhong Dou, Chengming Wang
Antimicrobial resistance genes play an important role in mediating resistance to sulfonamide in Gram-negative bacteria. While PCR is the current method to detect sulfonamide resistance genes (sul1, sul2, sul3), it is time-consuming and costly and there is an urgent need to develop a more convenient, simpler and rapid test for the sul. In this study, we describe a multiplex loop-mediated isothermal amplification (m-LAMP) assay we developed for the rapid and simultaneous detection of three sul. This m-LAMP assay successfully detected seven reference strains with different sul genotypes, but was negative for nine sul-negative reference strains...
April 30, 2018: Foodborne Pathogens and Disease
Dishon Muloi, Melissa J Ward, Amy B Pedersen, Eric M Fèvre, Mark E J Woolhouse, Bram A D van Bunnik
The role of farm animals in the emergence and dissemination of both AMR bacteria and their resistance determinants to humans is poorly understood and controversial. Here, we systematically reviewed the current evidence that food animals are responsible for transfer of AMR to humans. We searched PubMed, Web of Science, and EMBASE for literature published between 1940 and 2016. Our results show that eight studies (18%) suggested evidence of transmission of AMR from food animals to humans, 25 studies (56%) suggested transmission between animals and humans with no direction specified and 12 studies (26%) did not support transmission...
April 30, 2018: Foodborne Pathogens and Disease
Qianru Yang, Kelly J Domesle, Beilei Ge
Loop-mediated isothermal amplification (LAMP) has become a powerful alternative to polymerase chain reaction (PCR) for pathogen detection in clinical specimens and food matrices. Nontyphoidal Salmonella is a zoonotic pathogen of significant food and feed safety concern worldwide. The first study employing LAMP for the rapid detection of Salmonella was reported in 2005, 5 years after the invention of the LAMP technology in Japan. This review provides an overview of international efforts in the past decade on the development and application of Salmonella LAMP assays in a wide array of food and feed matrices...
June 2018: Foodborne Pathogens and Disease
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