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Foodborne Pathogens and Disease

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https://www.readbyqxmd.com/read/28926300/an-updated-scheme-for-categorizing-foods-implicated-in-foodborne-disease-outbreaks-a-tri-agency-collaboration
#1
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
#2
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
#3
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/28910166/prevalence-antimicrobial-resistance-and-relatedness-of-salmonella-isolated-from-chickens-and-pigs-on-farms-abattoirs-and-markets-in-sichuan-province-china
#4
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...
September 14, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28910155/identification-of-the-molecular-mechanism-of-trimethoprim-resistance-in-listeria-monocytogenes
#5
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
#6
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/28910140/impact-of-clinical-salmonellosis-in-veal-calves-on-the-recovery-of-salmonella-in-lymph-nodes-at-harvest
#7
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...
September 14, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28846460/evaluation-of-commercial-%C3%AE-agonists-dietary-protein-and-shade-on-fecal-shedding-of-escherichia-coli-o157-h7-from-feedlot-cattle
#8
James E Wells, Elaine D Berry, Minseok Kim, Steven D Shackelford, Kristin E Hales
Escherichia coli O157:H7 is a foodborne pathogen commonly associated with cattle feces. Diet, including dietary supplements such as β-agonists, may impact fecal shedding of this pathogen. A series of three experiments were conducted to determine if the β-agonists ractopamine hydrochloride (RAC) or zilpaterol hydrochloride (ZH) would impact the level or prevalence of fecal E. coli O157:H7 shedding. In Experiment 1, dietary RAC did not impact fecal shedding of E. coli O157:H7 based on the level or prevalence, but the addition of dietary soybean meal (SBM) in the study did reduce E...
August 28, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28792800/national-antimicrobial-resistance-monitoring-system-two-decades-of-advancing-public-health-through-integrated-surveillance-of-antimicrobial-resistance
#9
Beth E Karp, Heather Tate, Jodie R Plumblee, Uday Dessai, Jean M Whichard, Eileen L Thacker, Kis Robertson Hale, Wanda Wilson, Cindy R Friedman, Patricia M Griffin, Patrick F McDermott
Drug-resistant bacterial infections pose a serious and growing public health threat globally. In this review, we describe the role of the National Antimicrobial Resistance Monitoring System (NARMS) in providing data that help address the resistance problem and show how such a program can have broad positive impacts on public health. NARMS was formed two decades ago to help assess the consequences to human health arising from the use of antimicrobial drugs in food animal production in the United States. A collaboration among the Centers for Disease Control and Prevention, the U...
August 9, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28768141/a-randomized-trial-to-assess-the-effect-of-fluoroquinolone-metaphylaxis-on-the-fecal-prevalence-and-quinolone-susceptibilities-of-salmonella-and-campylobacter-in-feedlot-cattle
#10
Ashley B Smith, David G Renter, Natalia Cernicchiaro, Xiaorong Shi, Jason S Nickell, Daniel J Keil, T G Nagaraja
The study objective was to determine effects of fluoroquinolone metaphylaxis on fecal prevalence of Salmonella and Campylobacter and fecal prevalence of quinolone-resistant Salmonella and Campylobacter in feedlot cattle. On Day 0, cattle (n = 288) at risk for bovine respiratory disease (BRD) were randomly assigned to either a nontreated control pen (12 pens) or a fluoroquinolone-treated (enrofloxacin; Baytril(®) 100) pen (12 pens). Rectal fecal samples were collected from cattle on days 0, 7, 14, 21, and 28...
August 2, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28768110/first-report-of-human-gastroenteritis-caused-by-escherichia-coli-o157-nm-in-brazil
#11
Renata França Castro Santos, Janaína Dos Santos Nascimento, Mercedes Passos Geimba, Claudia Titze Hessel, Eduardo Cesar Tondo
In September 2005, the Sanitary Surveillance Service of Rio de Janeiro (SSS/RJ), Brazil, investigated a case of gastroenteritis involving a 13-year-old teenager hospitalized because of bloody diarrhea and severe abdominal pain. Owing to the severity of the symptoms, an epidemiological investigation was conducted in two states of Brazil. Escherichia coli O157:NM was isolated from stools and from a tomato and cheese salad prepared at the school canteen where the teenager attended. This is the first report of a human case of gastroenteritis related to E...
August 2, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28767285/listeria-monocytogenes-in-food-processing-facilities-food-contamination-and-human-listeriosis-the-brazilian-scenario
#12
Anderson Carlos Camargo, Joshua John Woodward, Douglas Ruben Call, Luís Augusto Nero
Listeria monocytogenes is a foodborne pathogen that contaminates food-processing environments and persists within biofilms on equipment, utensils, floors, and drains, ultimately reaching final products by cross-contamination. This pathogen grows even under high salt conditions or refrigeration temperatures, remaining viable in various food products until the end of their shelf life. While the estimated incidence of listeriosis is lower than other enteric illnesses, infections caused by L. monocytogenes are more likely to lead to hospitalizations and fatalities...
August 2, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28759251/toxoplasma-gondii-a-foodborne-pathogen-in-the-swine-production-chain-from-a-european-perspective
#13
Alberto De Berardinis, Domenico Paludi, Luca Pennisi, Alberto Vergara
Toxoplasmosis is a foodborne zoonosis transmitted by Toxoplasma gondii, a cosmopolitan protozoan that infects humans through exposure to different parasite stages, in particular by ingestion of tissue cysts or tachyzoites contained in meat, primary offal (viscera), and meat-derived products or ingestion of environmental sporulated oocysts in contaminated food or water. The pig is an important species for infection: raw or undercooked pork consumption not subject to treatment able to inactivate the parasite represents a risk to consumers' health...
July 31, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28753059/growth-of-salmonella-spp-and-escherichia-coli-o157-h7-on-fresh-cut-fruits-stored-at-different-temperatures
#14
Ke Feng, Wenzhong Hu, Aili Jiang, Gaowa Saren, Yongping Xu, Yaru Ji, Wenjun Shao
The objective of this work was to determine the growth potential of Salmonella spp. and Escherichia coli O157:H7 on fresh-cut honeydew melon, cantaloupe, watermelon, pitaya, mango, papaya, and pineapple stored at 5°C, 13°C, and 25°C. The results showed that both pathogens were able to grow on fresh-cut fruits except fresh-cut pineapple at 13°C and 25°C. Salmonella spp. grew more rapidly on fresh-cut honeydew melon, cantaloupe, watermelon, and mango than did E. coli O157:H7 at 13°C. The growth of both species was inhibited on fresh-cut pineapple, with that of Salmonella spp...
July 28, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28753035/quantitative-prevalence-phenotypic-and-genotypic-characteristics-of-bacillus-cereus-isolated-from-retail-infant-foods-in-china
#15
Yunyi Zhang, Jiancai Chen, Chunyan Feng, Li Zhan, Junyan Zhang, Yi Li, Yong Yang, Honghu Chen, Zheng Zhang, Yanjun Zhang, Lingling Mei, Haifeng Li
Bacillus cereus is an important foodborne pathogen, which can cause severe food poisoning. The aim of this study was (i) to evaluate the quantitative prevalence of B. cereus in retail prepackaged infant formula and ready-to-eat rice flour in China and (ii) to gain the basic information on pheno- and genotypic characteristics of B. cereus isolates. We found that 40 out of the 587 samples were positive for B. cereus. B. cereus in 3.5% of infant formula samples and 1.0% of rice flour samples outnumbered 100 Colony-Forming Units (CFU)/g...
July 28, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28742382/occurrence-and-antibiotic-susceptibility-of-listeria-species-and-staphylococcus-aureus-in-cattle-slaughterhouses-of-kerala-south-india
#16
Tanuja K G M Gowda, Latha C, Sunil B, Inge Van Damme
A total of 765 samples were collected from beef carcasses, knives, cutting table surfaces, beef, hands, air, and water from four cattle slaughterhouses of Kerala, South India, to determine the occurrence and antibiotic susceptibility of Listeria species and Staphylococcus aureus. Listeria spp. were isolated from beef carcasses (2.0%), knives (3.7%), cutting table surfaces (1.9%), beef (0.7%), and water (1.3%). The identified species were Listeria monocytogenes (0.1%), Listeria innocua (0.9%), and Listeria ivanovii (0...
July 25, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28731389/protease-hydrolysates-of-filefish-thamnaconus-modestus-byproducts-effectively-inhibit-foodborne-pathogens
#17
Shaimaa Hatab, Mei-Ling Chen, Wenhua Miao, Jiheng Lin, Dandan Wu, Changyu Wang, Pengxiang Yuan, Shanggui Deng
In this study, novel antimicrobial peptides had been derived by enzymatic hydrolysis of filefish (Thamnaconus modestus) byproduct (HFBP). Different proteases, (papain [P], trypsin [T], neutrase [N], pepsin [PE], and the mixture I [PN] and mixture II [PT]) and different hydrolysis time (60, 120, 180, and 240 min), have been used to generate peptides with different lengths and amino acid sequences. The antimicrobial properties of HFBPs were tested, against Gram-positive and Gram-negative strains, using disc diffusion method...
July 21, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28719244/evaluation-of-the-use-of-zero-augmented-regression-techniques-to-model-incidence-of-campylobacter-infections-in-foodnet
#18
Marlène Tremblay, Stacy M Crim, Dana J Cole, Robert M Hoekstra, Olga L Henao, Dörte Döpfer
The Foodborne Diseases Active Surveillance Network (FoodNet) is currently using a negative binomial (NB) regression model to estimate temporal changes in the incidence of Campylobacter infection. FoodNet active surveillance in 483 counties collected data on 40,212 Campylobacter cases between years 2004 and 2011. We explored models that disaggregated these data to allow us to account for demographic, geographic, and seasonal factors when examining changes in incidence of Campylobacter infection. We hypothesized that modeling structural zeros and including demographic variables would increase the fit of FoodNet's Campylobacter incidence regression models...
July 18, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28719239/explaining-consumer-safe-food-handling-through-behavior-change-theories-a-systematic-review
#19
Ian Young, Danielle Reimer, Judy Greig, Richard Meldrum, Patricia Turgeon, Lisa Waddell
Consumers often engage in unsafe food handling behaviors at home. Previous studies have investigated the ability of behavior-change theories to explain and predict these behaviors. The purpose of this review was to determine which theories are most consistently associated with consumers' safe food handling behaviors across the published literature. A standardized systematic review methodology was used, consisting of the following steps: comprehensive search strategy; relevance screening of identified references; confirmation of relevance and characterization of relevant articles; risk-of-bias assessment; data extraction; and descriptive analysis of study results...
July 18, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28708426/phenotypic-characteristics-and-genetic-diversity-of-salmonella-enterica-serotype-derby-isolated-from-human-patients-and-foods-of-animal-origin
#20
Chenggang Xu, Xingxing Ren, Zhou Feng, Ying Fu, Yanfen Hong, Zujie Shen, Lina Zhang, Ming Liao, Xuebin Xu, Jianmin Zhang
Salmonella enterica serotype Derby is among the three most common serotypes of nontyphoidal Salmonella isolated from patients with diarrhea in China. In this study, 133 Salmonella Derby isolates from human patients (n = 74) and foods of animal origin (n = 59) in Shanghai, China, between September 2013 and December 2014, were selected to study its phenotypic characteristics and genetic diversity. The isolates were subjected to antimicrobial susceptibility testing, plasmid replicon typing, virulence profile determination, and molecular subtyping by pulsed-field gel electrophoresis (PFGE)...
July 14, 2017: Foodborne Pathogens and Disease
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