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Foodborne Pathogens and Disease

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https://www.readbyqxmd.com/read/29106298/phenotypic-and-molecular-characterization-of-salmonella-enteritidis-se86-isolated-from-poultry-and-salmonellosis-outbreaks
#1
Karen Apellanis Borges, Thales Quedi Furian, Sara Neves de Souza, Rafaela Menezes, Carlos Tadeu Pippi Salle, Hamilton Luiz de Souza Moraes, Eduardo César Tondo, Vladimir Pinheiro do Nascimento
Salmonella Enteritidis remains a standout among the leading causes of foodborne diseases worldwide. Previous studies have demonstrated that a unique clonal group of Salmonella Enteritidis, named SE86, is involved in foodborne outbreaks in southern Brazil and is frequently identified among strains isolated from poultry. The aim of this study was to determine the influence of the isolation source (food products involved in salmonellosis outbreaks and poultry sources) on the phenotypic and molecular characteristics of Salmonella Enteritidis SE86...
November 6, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29106297/developments-in-micro-and-nanotechnology-for-foodborne-pathogen-detection
#2
Krista Carlson, Manoranjan Misra, Swomitra Mohanty
In response to the potential hazards associated with the globalization of the food industry, research has been focused on the development of new sensing techniques to provide the means of contamination detection at any stage in the food supply chain. The demand for on-site detection is growing as pre-emptive sensing of pathogens could eliminate foodborne-related outbreaks and associated healthcare costs. Reduction in food waste is also a driver for point-of-use (POU) sensing, from both an economic and environmental standpoint...
November 6, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29068722/high-occurrence-of-methicillin-resistant-staphylococcus-aureus-in-horses-at-slaughterhouses-compared-with-those-for-recreational-activities-a-professional-and-food-safety-concern
#3
Antonio Parisi, Marta Caruso, Giovanni Normanno, Laura Latorre, Angela Miccolupo, Rosa Fraccalvieri, Francesco Intini, Teresa Manginelli, Gianfranco Santagada
The epidemiology of methicillin-resistant Staphylococcus aureus (MRSA) in horses and its zoonotic potential is poorly understood. The objective of this study is to provide data on the prevalence and genetic characteristics of MRSA isolated from horses on farms, at racecourses, and at slaughterhouses in Italy, using standard and molecular methods. In addition, we report the prevalence of MRSA in horse handlers. Among 388 horses tested by nasal swabs, 27 (7%) were positive for MRSA ST398 (t011, t899, t1255) and ST1 (t127)...
October 25, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29068720/detection-and-molecular-characterization-of-methicillin-resistant-staphylococcus-aureus-from-table-eggs-in-haripur-pakistan
#4
Muhammad Ali Syed, Syeda Hala Hussain Shah, Yasmin Sherafzal, Syed Shafi-Ur-Rehman, Mushtaq Ahmed Khan, John B Barrett, Tiffanie A Woodley, Bushra Jamil, Shahid Ahmad Abbasi, Charlene R Jackson
Table eggs are nutritionally important food consumed globally. Despite being protected inside the hard shell and a semipermeable membrane, the egg contents may be contaminated with microbes and thus become a possible carrier of infectious agents to humans. A number of medically significant bacterial species such as Salmonella enterica, Listeria monocytogenes, and Yersinia enterocolitica have already been reported from table eggs. More important is the presence of antimicrobial-resistant bacterial strains in this food source...
October 25, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29068710/efficacy-of-combination-treatment-with-sodium-metasilicate-and-sodium-hypochlorite-for-inactivation-of-norovirus-on-fresh-vegetables
#5
Ji-Hyoung Ha, Sung Hyun Kim, Hee-Min Lee, Su-Ji Kim, Hae-Won Lee
In recent years, fresh vegetables have frequently been associated with the foodborne transmission of enteric viruses, such as human norovirus (NoV). Therefore, several studies have focused on developing methods to inactivate foodborne viruses for preventing outbreaks of foodborne illnesses. Sodium hypochlorite (NaOCl) is commonly used as a disinfectant, but results in undesirable effects on the appearance and taste of foods and can generate toxic byproducts when it exceeds the allowable concentration. Here, we evaluated the efficacy of a range of NaOCl concentrations (50-1000 ppm) for reducing the amounts of human NoV (NoV GII...
October 25, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29053370/cross-contamination-and-biofilm-formation-by-salmonella-enterica-serovar-enteritidis-on-various-cutting-boards
#6
Stéfani T A Dantas, Bruna F Rossi, Erika C R Bonsaglia, Ivana G Castilho, Rodrigo T Hernandes, Ary Fernandes Júnior, Vera L M Rall
Cross-contamination is one of the main factors related to foodborne outbreaks. This study aimed to analyze the cross-contamination process of Salmonella enterica serovar Enteritidis from poultry to cucumbers, on various cutting board surfaces (plastic, wood, and glass) before and after washing and in the presence and absence of biofilm. Thus, 10 strains of Salmonella Enteritidis were used to test cross-contamination from poultry to the cutting boards and from thereon to cucumbers. Moreover, these strains were evaluated as to their capacity to form biofilm on hydrophobic (wood and plastic) and hydrophilic materials (glass)...
October 20, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29048947/emergence-of-mcr-1-producing-salmonella-enterica-serovar-typhimurium-from-retail-meat-first-detection-in-brazil
#7
Renata Batista Rau, Daiana de Lima-Morales, Priscila Lamb Wink, Aldemir Reginato Ribeiro, Andreza Francisco Martins, Afonso Luis Barth
No abstract text is available yet for this article.
October 19, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29039983/potential-information-loss-due-to-categorization-of-minimum-inhibitory-concentration-frequency-distributions
#8
Reza Mazloom, Majid Jaberi-Douraki, Jeffrey R Comer, Victoriya Volkova
A bacterial isolate's susceptibility to antimicrobial is expressed as the lowest drug concentration inhibiting its visible growth, termed minimum inhibitory concentration (MIC). The susceptibilities of isolates from a host population at a particular time vary, with isolates with specific MICs present at different frequencies. Currently, for either clinical or monitoring purposes, an isolate is most often categorized as Susceptible, Intermediate, or Resistant to the antimicrobial by comparing its MIC to a breakpoint value...
October 17, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29035101/biofilm-formation-antimicrobial-resistance-and-sanitizer-tolerance-of-salmonella-enterica-strains-isolated-from-beef-trim
#9
Rong Wang, John W Schmidt, Dayna M Harhay, Joseph M Bosilevac, David A King, Terrance M Arthur
In the beef industry, product contamination by Salmonella enterica is a serious public health concern, which may result in human infection and cause significant financial loss due to product recalls. Currently, the precise mechanism and pathogen source responsible for Salmonella contamination in commercial establishments are not well understood. We characterized 89 S. enterica strains isolated from beef trim with respect to their biofilm-forming ability, antimicrobial resistance, and biofilm cell survival/recovery growth after sanitizer exposure...
October 16, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29028444/development-and-in-house-validation-of-a-real-time-polymerase-chain-reaction-for-the-detection-of-listeria-monocytogenes-in-meat
#10
Camilo Reyes, Luciano H Linares, Fabiana Moredo, Juan P Lirón, Victoria Brusa, Alejandra Londero, Lucía Galli, Juan M Oteiza, Magdalena Costa, Gerardo A Leotta
Listeriosis is a foodborne disease caused by Listeria monocytogenes. The aims of this work were to develop and validate an in-house real-time polymerase chain reaction (RT-PCR) for the detection of L. monocytogenes, and to determine its prevalence in raw ground beef samples from 53 butcheries that also sell ready-to-eat foods. One set of primers and one hydrolysis probe were designed for hly gene detection and then challenged with pure strains. The detection was successful for all L. monocytogenes strains analyzed and negative for all non-L...
October 13, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29028435/evaluation-of-agricultural-interventions-on-human-and-poultry-related-salmonella-enteritidis-in-british-columbia
#11
Marsha Taylor, William Cox, Michael Otterstatter, Nancy de With, Eleni Galanis
A collaborative investigation between public health and animal health led to numerous interventions along the food chain in response to an outbreak of human salmonellosis and increased incidence of Salmonella Enteritidis (SE) among poultry. Incidence of both human and chicken SE decreased substantially in 2012 and 2013 following these interventions. We used time series analysis to assess the impact of three interventions: vaccination of broiler breeder flocks, separation in the hatchery of breeder eggs, and an industry order to stop farm-gate sales of ungraded broiler hatching eggs...
October 13, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29022742/culture-based-quantification-with-molecular-characterization-of-non-o157-and-o157-enterohemorrhagic-escherichia-coli-isolates-from-rectoanal-mucosal-swabs-of-feedlot-cattle
#12
Zachary R Stromberg, Gentry L Lewis, Liesel G Schneider, Galen E Erickson, Isha R Patel, David R Smith, Rodney A Moxley
Enterohemorrhagic Escherichia coli (EHEC) strains are foodborne pathogens carried in the intestinal tracts of ruminants and shed in the feces. High concentrations (≥10(4) colony-forming units [CFU]/g) of EHEC in cattle feces are associated with contamination of hides, and subsequently, carcasses and beef. Several studies using agar media have quantified O157 but few have quantified non-O157 EHEC in samples from cattle. Thus, the objective of this study was to determine the concentration of O157 and non-O157 EHEC in cattle, and to characterize the associated EHEC isolates for their virulence potential...
October 12, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29016188/design-of-two-multiplex-pcr-assays-for-serotyping-shigella-flexneri
#13
Claudia A van der Ploeg, Ariel D Rogé, Ximena L Bordagorría, Maria T de Urquiza, Ana B Celi Castillo, Susana B Bruno
Shigella flexneri is a major health problem in developing countries. There are 19 serotypes recognized based on O-antigen structure and its typing is important for epidemiological purposes. However, the diversity of serotypes and the difficulties presented by phenotypic serotyping, for example, unavailable antisera for less common antigens, require the implementation of molecular techniques. In this study, we developed two multiplex PCR assays targeting the O-antigen synthesis genes and the O-antigen modification genes, for the rapid identification of S...
October 10, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28926300/an-updated-scheme-for-categorizing-foods-implicated-in-foodborne-disease-outbreaks-a-tri-agency-collaboration
#14
LaTonia C Richardson, Michael C Bazaco, Cary Chen Parker, Daniel Dewey-Mattia, Neal Golden, Karen Jones, Karl Klontz, Curtis Travis, Joanna Zablotsky Kufel, Dana Cole
BACKGROUND: Foodborne disease data collected during outbreak investigations are used to estimate the percentage of foodborne illnesses attributable to specific food categories. Current food categories do not reflect whether or how the food has been processed and exclude many multiple-ingredient foods. MATERIALS AND METHODS: Representatives from three federal agencies worked collaboratively in the Interagency Food Safety Analytics Collaboration (IFSAC) to develop a hierarchical scheme for categorizing foods implicated in outbreaks, which accounts for the type of processing and provides more specific food categories for regulatory purposes...
September 19, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28926285/the-role-of-acrab-tolc-efflux-pump-in-mediating-fluoroquinolone-resistance-in-naturally-occurring-salmonella-isolates-from-china
#15
Jinling Shen, Baowei Yang, Qiang Gu, Guodong Zhang, Jielin Yang, Feng Xue, Jingdong Shao, Xiaojuan Yi, Yuan Jiang
The involvement of AcrAB-TolC efflux pump in regulating fluoroquinolone resistance of naturally occurring Salmonella isolates is insufficiently investigated. In this study, the regulatory genes, acrR, ramR, marRAB, and soxRS of AcrAB-TolC efflux pump, of 27 naturally occurring fluoroquinolone-resistant Salmonella isolates collected in China were sequenced. The expression levels of acrB, ramA, marA, and soxS were also examined using quantitative real-time polymerase chain reaction. Gene alterations were mainly observed for acrR (three mutation types) and ramR (four mutation types), not for marRAB (no mutation) or soxRS (one mutaton type)...
September 19, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28915068/prevalence-and-transmission-of-antimicrobial-resistance-in-a-vertically-integrated-veal-calf-production-system
#16
Holden Hutchinson, Sarah Finney, Lohendy Muñoz-Vargas, Sydnee Feicht, Margaret Masterson, Gregory Habing
Transmission of antimicrobial resistance (AMR) from animal production systems to humans through the food supply is a public health concern. Currently, little is known about the prevalence of AMR among veal calves in the United States. Therefore, the objective of this prospective cohort study was to estimate the prevalence of AMR and multidrug resistance (MDR) among Escherichia coli within a vertically integrated production system. In addition, this study aimed to identify genes associated with phenotypic resistance to third- and fourth-generation cephalosporins (3GC and 4GC)...
September 15, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28910155/identification-of-the-molecular-mechanism-of-trimethoprim-resistance-in-listeria-monocytogenes
#17
Dorota Korsak, Agata Krawczyk-Balska
Trimethoprim with sulfamethoxazole is a therapeutic agent combination used to treat infections caused by the facultative intracellular foodborne pathogen Listeria monocytogenes. The aim of this study was to assess the frequency of resistance of L. monocytogenes arising due to exposure to trimethoprim and subsequently investigate the molecular mechanisms of resistance. After exposure of a culture of L. monocytogenes ATCC 13932 to trimethoprim at 10-fold the minimal inhibitory concentration spontaneous resistant mutants were recovered, giving a frequency of resistance development of 6...
September 14, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28910141/rapid-screening-of-natural-plant-extracts-with-calcium-diacetate-for-differential-effects-against-foodborne-pathogens-and-a-probiotic-bacterium
#18
William Colonna, Byron Brehm-Stecher, Kalidas Shetty, Anthony Pometto Iii
This study focused on advancing a rapid turbidimetric bioassay to screen antimicrobials using specific cocktails of targeted foodborne bacterial pathogens. Specifically, to show the relevance of this rapid screening tool, the antimicrobial potential of generally recognized as safe calcium diacetate (DAX) and blends with cranberry (NC) and oregano (OX) natural extracts was evaluated. Furthermore, the same extracts were evaluated against beneficial lactic acid bacteria. The targeted foodborne pathogens evaluated were Escherichia coli O157:H7, Salmonella spp...
September 14, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28910166/prevalence-antimicrobial-resistance-and-relatedness-of-salmonella-isolated-from-chickens-and-pigs-on-farms-abattoirs-and-markets-in-sichuan-province-china
#19
Suzhen Ma, Changwei Lei, Linghan Kong, Wei Jiang, Bihui Liu, Shuai Men, Yanxian Yang, Guangyang Cheng, Yanpeng Chen, Hongning Wang
This study aims at investigating the distribution, antimicrobial resistance, and genetic relationship of Salmonella isolated from 18 farms, their downstream abattoirs, and markets of chickens and pigs in Sichuan province, China. A total of 193 Salmonella isolates were identified from 693 samples with an isolation rate of 26.27% (88/335) in chickens and 29.33% (105/358) in pigs. Salmonella was isolated more frequently in abattoirs and markets than from farms. Serotypes were determined according to the White-Kauffmann-Le Minor scheme and 16 different serotypes were identified, with Derby being the most common, followed by Typhimurium and Meleagridis...
November 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28910140/impact-of-clinical-salmonellosis-in-veal-calves-on-the-recovery-of-salmonella-in-lymph-nodes-at-harvest
#20
Lohendy Muñoz-Vargas, Sarah K Finney, Holden Hutchinson, Margaret A Masterson, Greg Habing
The objective of this study was to determine the prevalence, serotypes, antimicrobial resistance phenotypes, and pulsed-field gel electrophoresis (PFGE) patterns of Salmonella recovered in feces and mesenteric and prefemoral lymph nodes (LNs) from cohorts of calves with and without a confirmed outbreak of salmonellosis. In a prospective cohort study, 160 calves from four farms without a reported outbreak (nonoutbreak farms) were sampled at farm and harvest. In addition, harvest samples from 80 calves of two farms with a confirmed outbreak (outbreak farms) were collected...
November 2017: Foodborne Pathogens and Disease
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