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Foodborne Pathogens and Disease

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https://www.readbyqxmd.com/read/28440688/simultaneous-identification-of-campylobacter-jejuni-campylobacter-coli-and-campylobacter-lari-with-smartcycler-based-multiplex-quantitative-polymerase-chain-reaction
#1
Kun C Liu, Karen C Jinneman, Jason Neal-McKinney, Wen-Hsin Wu, Daniel H Rice
BACKGROUND: Consumption of Campylobacter contaminated food or water is a leading cause of human acute gastroenteritis. Campylobacter jejuni, Campylobacter coli, and Campylobacter lari account for over 95% of total Campylobacter infections. A multiplex quantitative polymerase chain reaction (qPCR) for simultaneous identification of C. jejuni, C. coli, and C. lari was developed for use with the SmartCycler II system. MATERIALS AND METHODS: We evaluated and combined previously described primers and probes for Campylobacter detection, designed a new internal amplification control, and optimized the multiplex qPCR for the detection of C...
April 25, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28418717/diversity-of-endophytic-bacteria-in-a-fern-species-dryopteris-uniformis-makino-makino-and-evaluation-of-their-antibacterial-potential-against-five-foodborne-pathogenic-bacteria
#2
Gitishree Das, Seonjoo Park, Kwang-Hyun Baek
The fern plant Dryopteris uniformis has traditionally been used in herbal medicine and possesses many biological activities. This study was conducted to explore the endophytic bacterial diversity associated with D. uniformis and evaluate their antibacterial potential against foodborne pathogenic bacteria (FPB). Among 51 isolated endophytic bacteria (EB), 26 EB were selected based on their morphological characteristics and identified by 16S rRNA gene analysis. The distribution of EB was diverse in the leaf and the stem/root tissues...
April 18, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28418715/evaluation-of-selective-enrichment-and-chromogenic-media-for-salmonella-detection-in-raw-shell-egg-contents-with-a-low-microbial-load
#3
Soo-Kyoung Lee, Kwang-Young Song, Jung-Whan Chon, Dong-Hyeon Kim, Kun-Ho Seo
The current study was conducted to evaluate the ability to recover Salmonella from shell egg contents by culture methods. A total of 4,000 eggs were obtained from a grading and packing center located in the Gyeonggi Province of South Korea, and 200 samples were created by pooling 20 broken eggs. The pooled samples were held at room temperature for 4 d before a 25-mL aliquot of each pool was added to 225 mL of modified trypticase soy broth (mTSB) and incubated at 35°C for 24 ± 2 h. A loopful of the culture was streaked onto chromogenic Druggan-Forsythe-Iversen (DFI) agar and incubated at 36 ± 1°C for 18-24 h...
April 18, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28414523/presence-of-toxoplasma-gondii-in-drinking-water-from-an-endemic-region-in-southern-mexico
#4
Ivonne B Hernandez-Cortazar, Karla Y Acosta-Viana, Eugenia Guzman-Marin, Antonio Ortega-Pacheco, Jose C Segura-Correa, Matilde Jimenez-Coello
Toxoplasmosis can be acquired through the ingestion of contaminated drinking water with oocysts of Toxoplasma gondii, highly resistant to the routinely disinfection processes; based on chlorination commonly used in the water supply industry. The aim of this study was to determine the presence of T. gondii DNA in samples of public drinking water from an endemic region of southern Mexico. In total 74 samples of water (5 L each) were collected from the three well fields (I, II, and III) and 71 independent wells, distributing public drinking water to the city of Merida Yucatan, after passing through the chlorination process...
April 17, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28402712/investigation-of-a-staphylococcal-food-poisoning-outbreak-from-a-chantilly-cream-dessert-in-umbria-italy
#5
Laura Ercoli, Silvia Gallina, Yacine Nia, Frédéric Auvray, Sara Primavilla, Fabrizia Guidi, Benedetta Pierucci, Catia Graziotti, Lucia Decastelli, Stefania Scuota
On August 28, 2015, a staphylococcal food poisoning outbreak occurred in Umbria, Italy, affecting 24 of the 42 customers who had dinner at a local restaurant. About 3 h after ingesting a variety of foods, the customers manifested gastrointestinal symptoms. Within 24 h of notification from the hospital emergency department, Sanitary Inspectors of the local Public Health Unit performed an epidemiological investigation. A retrospective cohort study was conducted among the customers. Food and environmental samples were collected...
April 12, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28402677/multiplex-polymerase-chain-reaction-for-identification-of-shigellae-and-four-shigella-species-using-novel-genetic-markers-screened-by-comparative-genomics
#6
Hyun-Joong Kim, Ji-Oh Ryu, Ji-Yeon Song, Hae-Yeong Kim
In the detection of Shigella species using molecular biological methods, previously known genetic markers for Shigella species were not sufficient to discriminate between Shigella species and diarrheagenic Escherichia coli. The purposes of this study were to screen for genetic markers of the Shigella genus and four Shigella species through comparative genomics and develop a multiplex polymerase chain reaction (PCR) for the detection of shigellae and Shigella species. A total of seven genomic DNA sequences from Shigella species were subjected to comparative genomics for the screening of genetic markers of shigellae and each Shigella species...
April 12, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28387529/toxoplasma-gondii-infection-in-farmed-wild-boars-sus-scrofa-in-three-cities-of-northeast-china
#7
Meng-Jie Bai, Yang Zou, Hany M Elsheikha, Jian-Gang Ma, Wen-Bin Zheng, Quan Zhao, Xiao-Xuan Zhang, Xing-Quan Zhu
The apicomplexan protozoan parasite Toxoplasma gondii is a widely distributed etiological agent of foodborne illness. This parasite can cause production losses in livestock and serious disease in humans through consumption of contaminated meat. Pig meat is the most likely source of human infection, and wild boars may play a role in the transmission of T. gondii by serving as a reservoir host. This study aimed to investigate the seroprevalence of antibodies to T. gondii among farmed wild boars in China. In an 11-month survey, a total of 882 serum samples were obtained from farmed wild boars from three cities (Jilin City, Siping City, and Baishan City) in Jilin province, Northeast China and were tested for antibodies specific for T...
April 7, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28375673/distribution-and-antimicrobial-susceptibility-of-foodborne-salmonella-serovars-in-eight-provinces-in-china-from-2007-to-2012-except-2009
#8
Yin Wang, Chenyang Cao, Walid Q Alali, Shenghui Cui, Fengqin Li, Jianghui Zhu, Xin Wang, Jianghong Meng, Baowei Yang
One thousand four hundred ninety-one Salmonella isolates recovered from retail foods including chicken, beef, fish, pork, dumplings, and cold dishes in China in 2007, 2008, 2010, 2011, and 2012 were analyzed for distribution of serotype and antimicrobial susceptibility. A total of 129 Salmonella serotypes were detected among 1491 isolates. Salmonella Enteritidis (21.5%), Typhimurium (11.0%), Indiana (10.8%), Thompson (5.4%), Derby (5.1%), Agona (3.8%), and Shubra (3.0%) were the seven most important serotypes in 1491 isolates...
April 4, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28358583/genetic-relatedness-among-shiga-toxin-producing-escherichia-coli-isolated-along-the-animal-food-supply-chain-and-in-gastroenteritis-cases-in-qatar-using-multilocus-sequence-typing
#9
Srikanth Palanisamy, YuChen Chang, Joy Scaria, Rafael Antonio Casarin Penha Filho, Kenlyn E Peters, Sanjay H Doiphode, Ali Sultan, Hussni O Mohammed
INTRODUCTION: Pathogenic Escherichia coli has been listed among the most important bacteria associated with foodborne illnesses around the world. We investigated the genetic relatedness among Shiga toxin-producing E. coli (STEC) isolated along the animal food supply chain and from humans diagnosed with gastroenteritis in Qatar. METHODS: Samples were collected from different sources along the food supply chain and from patients admitted to the hospital with complaints of gastroenteritis...
March 30, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28355096/antimicrobial-resistance-profiles-of-listeria-monocytogenes-and-listeria-innocua-isolated-from-ready-to-eat-products-of-animal-origin-in-spain
#10
Cristina Escolar, Diego Gómez, María Del Carmen Rota García, Pilar Conchello, Antonio Herrera
The objective of this work was to investigate the antimicrobial resistance in Listeria spp. isolated from food of animal origin. A total of 50 Listeria strains isolated from meat and dairy products, consisting of 7 Listeria monocytogenes and 43 Listeria innocua strains, were characterized for antimicrobial susceptibility against nine antimicrobials. The strains were screened by real-time PCR for the presence of antimicrobial resistance genes: tet M, tet L, mef A, msr A, erm A, erm B, lnu A, and lnu B. Multidrug resistance was identified in 27 Listeria strains, 4 belonging to L...
March 29, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28350214/outbreak-of-campylobacteriosis-following-a-dairy-farm-visit-confirmation-by-genotyping
#11
Elina Lahti, Moa Rehn, Gunilla Ockborn, Ingrid Hansson, Joakim Ågren, Eva Olsson Engvall, Cecilia Jernberg
In April-May 2014, an outbreak of campylobacteriosis occurred after a preschool visit to a dairy farm in the South Western part of Sweden. During the visit, a meal, including unpasteurized milk, was served. A retrospective cohort study using a web-based questionnaire was performed among the participants (n = 30) of the farm visit. A total of 24 of the 30 (80%) cohort members completed the questionnaire. Eleven cases were identified, and Campylobacter jejuni was isolated from eight of them. Seven of the cases were 2- to 7-year-old children...
March 28, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28306338/the-epidemiology-of-childhood-salmonella-infections-in-alberta-canada
#12
Kate E Faulder, Kimberley Simmonds, Joan L Robinson
OBJECTIVES: The objectives were to describe the incidence, demographics, laboratory findings, and suspected sources of childhood Salmonella infections in Alberta, Canada, with a focus on preventable cases. METHODS: Data from Notifiable Disease Reports for children with nontyphoidal salmonellosis (NTS) or typhoid/paratyphoid fever from 2007 through 2015 were analyzed. RESULTS: NTS was detected from 2285 children. Bacteremia was documented in 55 cases (2...
March 17, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28281781/feedlot-and-pen-level-prevalence-of-enterohemorrhagic-escherichia-coli-in-feces-of-commercial-feedlot-cattle-in-two-major-u-s-cattle-feeding-areas
#13
Charley A Cull, David G Renter, Diana M Dewsbury, Lance W Noll, Pragathi B Shridhar, Samuel E Ives, Tiruvoor G Nagaraja, Natalia Cernicchiaro
The objective of this study was to determine feedlot- and pen-level fecal prevalence of seven enterohemorrhagic Escherichia coli (EHEC) belonging to serogroups (O26, O45, O103, O111, O121, O145, and O157, or EHEC-7) in feces of feedlot cattle in two feeding areas in the United States. Cattle pens from four commercial feedlots in each of the two major U.S. beef cattle areas were sampled. Up to 16 pen-floor fecal samples were collected from each of 4-6 pens per feedlot, monthly, for a total of three visits per feedlot, from June to August, 2014...
March 10, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28398869/the-in-vitro-and-in-vivo-effect-of-carvacrol-in-preventing-campylobacter-infection-colonization-and-in-improving-productivity-of-chicken-broilers
#14
Carmel Kelly, Ozan Gundogdu, Gratiela Pircalabioru, Ada Cean, Pam Scates, Mark Linton, Laurette Pinkerton, Elizabeth Magowan, Lavinia Stef, Eliza Simiz, Ioan Pet, Sharon Stewart, Richard Stabler, Brendan Wren, Nick Dorrell, Nicolae Corcionivoschi
The current trend in reducing the antibiotic usage in animal production imposes urgency in the identification of novel biocides. The essential oil carvacrol, for example, changes the morphology of the cell and acts against a variety of targets within the bacterial membranes and cytoplasm, and our in vitro results show that it reduces adhesion and invasion of chicken intestinal primary cells and also biofilm formation. A trial was conducted to evaluate the effects of dietary supplementation of carvacrol at four concentrations (0, 120, 200, and 300 mg/kg of diet) on the performance of Lactobacillus spp...
February 27, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28398868/susceptibility-of-salmonella-enterica-isolates-from-tomato-farm-environments-to-fatty-acids-naturally-found-on-tomato-fruit
#15
Govindaraj Dev Kumar, Shirley A Micallef
Salmonella enterica subsp. enterica can colonize tomato fruit as it interacts with fruit surface compounds. The exometabolome of tomato fruit contains a mixture of compounds, including fatty acids, which could affect Salmonella fitness. Fatty acids detected in fruit exudates were investigated for Salmonella inhibition. Pelargonic, lauric, myristic, palmitic, margaric, stearic, and oleic acids were suspended in water dissolved in dimethyl sulfoxide (DMSO) or emulsified in water and quillaja saponin to assess how bioavailability impacted Salmonella growth...
February 22, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28398867/antimicrobial-efficacy-of-cinnamaldehyde-against-escherichia-coli-o157-h7-and-salmonella-enterica-in-carrot-juice-and-mixed-berry-juice-held-at-4%C3%A2-c-and-12%C3%A2-c
#16
David Manu, Aubrey F Mendonca, Aura Daraba, James S Dickson, Joseph Sebranek, Angela Shaw, Fei Wang, Shecoya White
The effectiveness of cinnamaldehyde for inactivating Salmonella enterica and Escherichia coli O157:H7 in carrot juice (CRJ) and mixed berry juice (MBJ) was investigated. Brain heart infusion broth (BHI), CRJ, and MBJ, with concentrations of added cinnamaldehyde ranging from 0.15 to 1.5 μL/mL, 0.25 to 2.0 μL/mL, and 0.25 to 1.5 μL/mL, respectively, were each inoculated with a 5-strain mixture of Salmonella enterica or Escherichia coli O157:H7 to give an initial viable count of 5.07 log10 colony-forming units/mL...
February 21, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28398866/genome-wide-survey-of-genes-under-positive-selection-in-avian-pathogenic-escherichia-coli-strains
#17
Thaís Cabrera Galvão Rojas, Francisco Pereira Lobo, Jorge Augusto Hongo, Renato Vicentini, Renu Verma, Renato Pariz Maluta, Wanderley Dias da Silveira
The ability to obtain bacterial genomes from the same host has allowed for comparative studies that help in the understanding of the molecular evolution of specific pathotypes. Avian pathogenic Escherichia coli (APEC) is a group of extraintestinal strains responsible for causing colibacillosis in birds. APEC is also suggested to possess a role as a zoonotic agent. Despite its importance, APEC pathogenesis still has several cryptic pathogenic processes that need to be better understood. In this work, a genome-wide survey of eight APEC strains for genes with evidence of recombination revealed that ∼14% of the homologous groups evaluated present signs of recombination...
February 17, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28186826/cross-sectional-study-of-toxoplasma-gondii-infection-in-pig-farms-in-england
#18
Georgina Limon, Wendy Beauvais, Nikolaos Dadios, Isabelle Villena, Charlotte Cockle, Radu Blaga, Javier Guitian
Ingestion of undercooked meat has been proposed as an important source of human Toxoplasma gondii infection. To ascertain the contribution of meat consumption to the risk of human infection, estimates of the prevalence of infection in meat-producing animals are required. A cross-sectional study was conducted to assess T. gondii infection in pigs raised in England, to identify risk factors for infection, and to compare performance of two serological tests: modified agglutination test (MAT) and enzyme-linked immunosorbent assay (ELISA)...
February 10, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28151001/distribution-and-molecular-characterization-of-campylobacter-species-at-different-processing-stages-in-two-poultry-processing-plants
#19
Soo-Kyoung Lee, Hyun-Jung Park, Jin-Hee Lee, Jong-Soo Lim, Kun-Ho Seo, Eun-Jeong Heo, Young-Jo Kim, Sung-Hwan Wee, Jin-San Moon
The present study analyzed the prevalence and molecular characterization of Campylobacter at different processing steps in poultry slaughterhouses to determine where contamination mainly occurs. A total of 1,040 samples were collected at four different stages (preprocessing cloacal swabs, postevisceration, postwashing, and postchilling) in two processing plants. Campylobacter was detected in 5.8% (15 of 260) of the cloacal swabs and in 13.3% (104 of 780) of the processing samples. In both plants, the sampling points with the greatest contamination rates were after evisceration (20...
February 2, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28379732/prevalence-of-plasmid-mediated-fosfomycin-resistance-gene-fosa3-among-ctx-m-producing-escherichia-coli-isolates-from-chickens-in-china
#20
Wei Jiang, Shuai Men, Linghan Kong, Suzhen Ma, Yongqiang Yang, Yongxiang Wang, Qiwu Yuan, Guangyang Cheng, Wencheng Zou, Hongning Wang
The aim of this study was to investigate the prevalence of fosfomycin resistance gene fosA3 and characterize plasmids harboring fosA3 among CTX-M-producing Escherichia coli from chickens in China. A total of 234 CTX-M-producing E. coli isolates collected from chickens from 2014 to 2016 were screened for the presence of plasmid-mediated fosfomycin resistance genes (fosA, fosA3, and fosC2). Clonal relatedness of fosA3-positive isolates was determined by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST)...
April 2017: Foodborne Pathogens and Disease
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