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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
Silvia Bonardi, Luca Bolzoni, Franco Brindani, Erika Scaltriti, Pierugo Cavallini, Carnovale Giuseppe, Stefano Pongolini
During 2014-2015, 300 pig carcasses before chilling and 85 food contact surfaces (FCSs) at cutting lines were tested for Salmonella in three slaughterhouses (namely A, B, and C) of northern Italy. In slaughterhouses A and B, four carcass sites of 100 cm2 each (from both the exterior and interior side) were swabbed with a single sponge. In abattoir C, four 100 cm2 sites of the exterior and the interior sides were swabbed with two independent sponges. The population average prevalence of Salmonella-positive carcasses (which takes into account the structure of the study design, with multiple samples collected in a single day) in slaughterhouses A and B was 12...
May 3, 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
Yang Zhang, Yage Wang, Rujian Cai, Lei Shi, Chunling Li, He Yan
In this study, 130 Staphylococcus aureus isolates from samples associated with pork production were tested for prevalence of 18 staphylococcal enterotoxin (SE) genes. Approximately 94.6% (123/130) of isolates from different stages of pork production harbored one or more SE genes forming 37 different enterotoxin gene profiles. Seb was present in 60.0% of the S. aureus isolates, the highest among the genes tested. The genes, sed, sej, seo, sep, ser, and seu, were not found. The five classical SE genes (including sea, seb, sec, sed, see) had lower prevalence than the egc gene cluster (seg, sei, sem, sen, seo, or seu)...
April 19, 2018: Foodborne Pathogens and Disease
Amit Vikram, John W Schmidt
Carbapenems are classified as critically important antibiotics since they are employed when resistant Gram-negative bacterial infections fail to respond to other antibiotic therapies. Carbapenem-resistant bacteria (CRB) were traditionally understood to be rare in the U.S. food-producing animals. Recently, using quantitative polymerase chain reaction (qPCR), our group detected blaKPC-2 in all 72 metagenomic DNA (mgDNA) samples prepared from the feces of 36 lots of beef cattle "raised without antibiotics" (RWA) and 36 lots raised "conventionally" (CONV)...
April 19, 2018: Foodborne Pathogens and Disease
Andrea Parisi, John A Crump, Kathryn Glass, Benjamin P Howden, Luis Furuya-Kanamori, Samantha Vilkins, Darren J Gray, Martyn D Kirk
BACKGROUND: Salmonella is a leading cause of foodborne enterocolitis worldwide. Antimicrobial use in food animals is the driving force for antimicrobial resistance among Salmonella particularly in high-income countries. Nontyphoidal Salmonella (NTS) infections that are multidrug resistant (MDR) (nonsusceptible to ≥1 agent in ≥3 antimicrobial categories) may result in more severe health outcomes, although these effects have not been systematically examined. We conducted a systematic review and meta-analysis to examine impacts of MDR NTS on disease outcomes in high-income settings...
April 6, 2018: Foodborne Pathogens and Disease
Guojie Cao, Marc Allard, Maria Hoffmann, Tim Muruvanda, Yan Luo, Justin Payne, Kevin Meng, Shaohua Zhao, Patrick McDermott, Eric Brown, Jianghong Meng
Multidrug-resistant (MDR) plasmids play an important role in disseminating antimicrobial resistance genes. To elucidate the antimicrobial resistance gene compositions in A/C incompatibility complex (IncA/C) plasmids carried by animal-derived MDR Salmonella Newport, and to investigate the spread mechanism of IncA/C plasmids, this study characterizes the complete nucleotide sequences of IncA/C plasmids by comparative analysis. Complete nucleotide sequencing of plasmids and chromosomes of six MDR Salmonella Newport strains was performed using PacBio RSII...
April 5, 2018: Foodborne Pathogens and Disease
W Evan Chaney, Rebecca Maloney, Bradley J Johnson, J Chance Brooks, Mindy M Brashears, Guy H Loneragan
Inclusion of distillers' grains (DGs) has been associated with increased prevalence of Escherichia coli O157:H7 in cattle housed in research settings. Our objective was to quantify the relationship between inclusion of DGs in commercial feedlot rations and the burden of E. coli O157. A convenience sample of 10 feedlots was enrolled based on DG use in finishing diets; 1 cohort included 5 feedlots in which DGs were greater than 15% of the dietary dry matter and the other cohort consisted of 5 feedlots at a concentration less than 8%...
April 5, 2018: Foodborne Pathogens and Disease
Fia Noviyanti, Yukie Hosotani, Shigenobu Koseki, Yasuhiro Inatsu, Susumu Kawasaki
The goals of this study were to monitor the growth kinetics of Salmonella Enteritidis in chicken juice using real-time polymerase chain reaction (PCR) and to evaluate its efficacy by comparing the results with an experimental database. Salmonella Enteritidis was inoculated in chicken juice samples at an initial inoculum of 104 CFU/mL with inoculated samples incubated at six different temperatures (10, 15, 20, 25, 30, and 35°C). Sampling was carried out for 36 h to observe the growth of Salmonella Enteritidis...
April 2, 2018: Foodborne Pathogens and Disease
Yukyung Choi, Soomin Lee, Hyun Jung Kim, Heeyoung Lee, Sejeong Kim, Jeeyeon Lee, Jimyeong Ha, Hyemin Oh, Jang Won Yoon, Yohan Yoon, Kyoung-Hee Choi
This study determined the serotyping and genotyping properties of Escherichia coli strains isolated from kimchi and various raw vegetables used for kimchi preparation. In addition, the kinetic behavior of E. coli strains in kimchi during fermentation was also determined using a predictive microbiological model. The study results revealed that E. coli isolated from napa cabbage (3.3%; 1/30) was enterohemorrhagic E. coli (O6:H34), and eight typical colonies isolated from kimchi (15%; 6/40) were enteropathogenic E...
March 28, 2018: Foodborne Pathogens and Disease
Ashley B Smith, David G Renter, Xiaorong Shi, Natalia Cernicchiaro, Orhan Sahin, T G Nagaraja
Campylobacter spp. can be pathogenic to humans and often harbor antimicrobial resistance genes. Data on resistance in relation to fluoroquinolone use in beef cattle are scarce. This cross-sectional study of preharvest cattle evaluated Campylobacter prevalence and susceptibility to nalidixic acid and ciprofloxacin in feedlots that previously administered a fluoroquinolone as primary treatment for bovine respiratory disease. Twenty fresh fecal samples were collected from each of 10 pens, in each of five feedlots, 1-2 weeks before harvest...
March 20, 2018: Foodborne Pathogens and Disease
Laura Ford, Qinning Wang, Russell Stafford, Kelly-Anne Ressler, Sophie Norton, Craig Shadbolt, Kirsty Hope, Neil Franklin, Radomir Krsteski, Adrienne Carswell, Glen P Carter, Torsten Seemann, Peter Howard, Mary Valcanis, Cristina Fabiola Sotomayor Castillo, John Bates, Kathryn Glass, Deborah A Williamson, Vitali Sintchenko, Benjamin P Howden, Martyn D Kirk
Salmonella Typhimurium is a common cause of foodborne illness in Australia. We report on seven outbreaks of Salmonella Typhimurium multilocus variable-number tandem-repeat analysis (MLVA) 03-26-13-08-523 (European convention 2-24-12-7-0212) in three Australian states and territories investigated between November 2015 and March 2016. We identified a common egg grading facility in five of the outbreaks. While no Salmonella Typhimurium was detected at the grading facility and eggs could not be traced back to a particular farm, whole genome sequencing (WGS) of isolates from cases from all seven outbreaks indicated a common source...
March 20, 2018: Foodborne Pathogens and Disease
Wafaa Chaalal, Nadia Chaalal, Nadjette Bourafa, Mebrouk Kihal, Seydina M Diene, Jean-Marc Rolain
The current study aimed to characterize Staphylococcus aureus isolates from foodstuffs collected from western Algeria. A total of 153 S. aureus isolates from various raw and processed foods were obtained and identified using matrix-assisted laser desorption and ionization time-of-flight mass spectrometry. Isolates were characterized by antimicrobial susceptibility testing and toxin gene detection. Methicillin-resistant Staphylococcus aureus (MRSA) isolates were identified by detection of the mecA gene and characterized by staphylococcal cassette chromosome mec (SCCmec) typing...
March 15, 2018: Foodborne Pathogens and Disease
Dixie F Mollenkopf, Dimitria A Mathys, Sydnee M Feicht, Jason W Stull, Andrew S Bowman, Joshua B Daniels, Thomas E Wittum
Carbapenemase-producing Enterobacteriaceae (CPE) threaten both agriculture and public health. While carbapenems are restricted in food-producing animals, other β-lactams, such as ceftiofur, are frequently applied in livestock. While the relationship is not fully elucidated, ceftiofur use may provide selective pressure that promotes carbapenem resistance. Recently reported in U.S. livestock, plasmid-mediated CPE are also present in livestock in Europe and Asia. We previously reported the rare carbapenemase gene, blaIMP-64 , in the environment of a large farrow-to-finish swine operation...
March 15, 2018: Foodborne Pathogens and Disease
Jitendra Patel, Shivramu Keelara, Jennifer Green
Consumer awareness of fresh herbs and its demand has increased in recent years due to health benefits and distinct aroma in prepared food. There are specific markets for local growers, especially for organically grown herbs. Shiga-toxigenic Escherichia coli and Salmonella spp. have been detected and associated with foodborne outbreaks from fresh herbs. Limited treatment options are available in the processing of fresh herbs to prevent the spread of foodborne pathogens. In this study, plant-based essential oils were evaluated on fresh herbs for their antimicrobial activities against Salmonella and E...
March 15, 2018: Foodborne Pathogens and Disease
Laura G Brown, Edward Rickamer Hoover, Brenda V Faw, Nicole K Hedeen, David Nicholas, Melissa R Wong, Craig Shepherd, Daniel L Gallagher, Janell R Kause
Listeria monocytogenes (L. monocytogenes) causes the third highest number of foodborne illness deaths annually. L. monocytogenes contamination of sliced deli meats at the retail level is a significant contributing factor to L. monocytogenes illness. The Centers for Disease Control and Prevention's Environmental Health Specialists Network (EHS-Net) conducted a study to learn more about retail delis' practices concerning L. monocytogenes growth and cross-contamination prevention. This article presents data from this study on the frequency with which retail deli refrigerator temperatures exceed 41°F, the Food and Drug Administration (FDA)-recommended maximum temperature for ready-to-eat food requiring time and temperature control for safety (TCS) (such as retail deli meat)...
May 2018: Foodborne Pathogens and Disease
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