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https://www.readbyqxmd.com/read/28231666/-an-outbreak-of-paratyphoid-fever-in-a-county-of-yunnan-province-2010-2011
#1
S K Wang, Z G Wang, X H Zhang, B Yang, Q Wu, B Kan, Y H Zhou, R S Yang, M Y Yan
Objective: To identify the source and to comment on control program regarding an outbreak of paratyphoid A fever in a county, through field studies. Methods: Descriptive epidemiological methods were adopted to describe the epidemiological characteristics of the outbreak, which occurred in Yuanjiang county, Yunan province between 2010-2011, China. Case-control study with environmental investigation was performed to identify related risk factors and pathogens while isolation and susceptibility on the suspected pathogens were conducted...
February 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28231169/an-evaluation-of-alternatives-to-nitrites-and-sulfites-to-inhibit-the-growth-of-salmonella-enterica-and-listeria-monocytogenes-in-meat-products
#2
Alexandre Lamas, José Manuel Miranda, Beatriz Vázquez, Alberto Cepeda, Carlos Manuel Franco
In recent years, the use of nitrites and sulfites as food preservatives has been a cause for concern due to the health problems that these additives can cause in humans. Natural products have been studied as an alternative, but most of them have hardly been applied in the food industry for technological and economic reasons. In this sense, organic salts such as sodium acetate are a good alternative due to their affordability. Thus, this study evaluated the capacity of sodium nitrite, sodium sulfite, a sodium acetate product (TQI C-6000), and chitosan to inhibit two important foodborne pathogens, Salmonella enterica and Listeria monocytogenes...
October 31, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231137/evaluation-of-electrolytically-generated-hypochlorous-acid-electrolyzed-water-for-sanitation-of-meat-and-meat-contact-surfaces
#3
Shawnna Veasey, Peter M Muriana
'Electrolyzed water' generators are readily available in the food industry as a renewable source of hypochlorous acid that eliminates the need for workers to handle hazardous hypochlorite concentrates. We applied electrolyzed water (EW) directly to multi-strain cocktails of Listeria monocytogenes, E. coli O157:H7, and Salmonella sp. at 250 ppm free available chlorine (FAC) and achieved greater than 6-log reductions in 2 min. Lower EW values were examined as antimicrobial interventions for fresh meat (beef carcasses), processed meats (frankfurters), and food contact surfaces (slicing blades)...
June 13, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231123/antibacterial-and-antioxidant-activities-of-essential-oils-from-artemisia-herba-alba-asso-pelargonium-capitatum-%C3%A3-radens-and-laurus-nobilis-l
#4
Ragina Rafiq, Saeed A Hayek, Ugochukwu Anyanwu, Bonita I Hardy, Valerie L Giddings, Salam A Ibrahim, Reza Tahergorabi, Hye Won Kang
Essential oils are natural antimicrobials that have the potential to provide a safer alternative to synthetic antimicrobials currently used in the food industry. Therefore, the aim of this study was to evaluate the antimicrobial and antioxidant activities of essential oils from white wormwood, rose-scented geranium and bay laurel against Salmonella typhimurium and Escherichia coli O157:H7 on fresh produce and to examine consumer acceptability of fresh produce treated with these essential oils. Our results showed that essential oil derived from rose-scented geranium exhibited the most effective antimicrobial activity at the same and similar minimum inhibition concentration levels (0...
April 11, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231111/behavior-of-salmonella-and-listeria-monocytogenes-in-raw-yellowfin-tuna-during-cold-storage
#5
Chengchu Liu, Jing Mou, Yi-Cheng Su
Behavior of Salmonella and Listeria monocytogenes in raw yellowfin tuna during refrigeration and frozen storage were studied. Growth of Salmonella was inhibited in tuna during refrigerated storage, while L. monocytogenes was able to multiply significantly during refrigerated storage. Populations of Salmonella in tuna were reduced by 1 to 2 log after 12 days of storage at 5-7 °C, regardless levels of contamination. However, populations of L. monocytogenes Scott A, M0507, and SFL0404 in inoculated tuna (10⁴-10⁵ CFU/g) increased by 3...
March 2, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230522/multinational-outbreak-of-travel-related-salmonella-chester-infections-in-europe-summers-2014-and-2015
#6
Laure Fonteneau, Nathalie Jourdan Da Silva, Laetitia Fabre, Philip Ashton, Mia Torpdahl, Luise Müller, Brahim Bouchrif, Abdellah El Boulani, Eleni Valkanou, Wesley Mattheus, Ingrid Friesema, Silvia Herrera Leon, Carmen Varela Martínez, Joël Mossong, Ettore Severi, Kathie Grant, François-Xavier Weill, Céline M Gossner, Sophie Bertrand, Tim Dallman, Simon Le Hello
Between 2014 and 2015, the European Centre for Disease Prevention and Control was informed of an increase in numbers of Salmonella enterica serotype Chester cases with travel to Morocco occurring in six European countries. Epidemiological and microbiological investigations were conducted. In addition to gathering information on the characteristics of cases from the different countries in 2014, the epidemiological investigation comprised a matched case-case study involving French patients with salmonellosis who travelled to Morocco that year...
February 16, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28230180/assessment-of-chicken-carcass-microbiome-responses-during-processing-in-the-presence-of-commercial-antimicrobials-using-a-next-generation-sequencing-approach
#7
Sun Ae Kim, Si Hong Park, Sang In Lee, Casey M Owens, Steven C Ricke
The purpose of this study was to 1) identify microbial compositional changes on chicken carcasses during processing, 2) determine the antimicrobial efficacy of peracetic acid (PAA) and Amplon (blend of sulfuric acid and sodium sulfate) at a poultry processing pilot plant scale, and 3) compare microbial communities between chicken carcass rinsates and recovered bacteria from media. Birds were collected from each processing step and rinsates were applied to estimate aerobic plate count (APC) and Campylobacter as well as Salmonella prevalence...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28230141/collapse-of-aztec-society-linked-to-catastrophic-salmonella-outbreak
#8
Ewen Callaway
No abstract text is available yet for this article.
February 16, 2017: Nature
https://www.readbyqxmd.com/read/28229618/the-first-description-of-the-extended-spectrum-beta-lactamase-blashv-12-gene-in-a-salmonella-monophasic-typhimurium-strain-isolated-from-acute-gastroenteritis-in-a-kidney-transplant-recipient-in-southeast-spain
#9
José Antonio Aparicio-Gómez, Silvia Herrera-López, José Gutiérrez-Fernández
Acute gastroenteritis (AGE) is a common disease within the population. Most cases are self-limited. However, intensive treatment is sometimes necessary to ensure patient integrity. This disease is characterized by vomiting and/or diarrhea with blood or mucus, discomfort, fever, and nonspecific abdominal pain. Commonly involved pathogens in the developed world include: viruses, bacteria, and parasites. In this paper we report a rare cause of AGE.
February 23, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28228183/hospitalizations-associated-with-salmonellosis-among-seniors-in-canada-2000-2010
#10
P Turgeon, R Murray, A Nesbitt
Salmonella is one of the most prevalent bacteria associated with enteric illness in Canada and seniors are considered a vulnerable population more likely to develop severe illness. In the coming decades, hospitalizations and deaths associated with Salmonella in seniors could represent a challenge due to an aging population in Canada. The numbers of non-typhoidal (NT) Salmonella-related hospitalizations from the Canadian Hospitalization Morbidity Database were analysed for a period of 10 years for seniors. Hospitalization rate calculations and descriptive analyses were performed on variables associated with the burden of hospitalization and compared with the adult age group...
February 23, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28226285/drying-and-decontamination-of-raw-pistachios-with-sequential-infrared-drying-tempering-and-hot-air-drying
#11
Chandrasekar Venkitasamy, Maria T Brandl, Bini Wang, Tara H McHugh, Ruihong Zhang, Zhongli Pan
Pistachio nuts have been associated with outbreaks of foodborne disease and the industry has been impacted by numerous product recalls due to contamination with Salmonella enterica. The current hot air drying of pistachios has low energy efficiency and drying rates, and also does not guarantee the microbial safety of products. In the study described herein, dehulled and water-sorted pistachios with a moisture content (MC) of 38.14% (wet basis) were dried in a sequential infrared and hot air (SIRHA) drier to <9% MC...
February 9, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28226178/occurrence-characterization-and-antimicrobial-susceptibility-of-salmonella-enterica-in-slaughtered-pigs-in-sardinia
#12
Federica Fois, Francesca Piras, Mia Torpdahl, Roberta Mazza, Simonetta G Consolati, Carlo Spanu, Christian Scarano, Enrico P L De Santis
The aim of this study was to determine Salmonella occurrence in slaughtered finishing pigs and piglets and in slaughterhouse environment in order to characterize the isolates with phenotypical (antimicrobial testing) and molecular (PFGE, MLVA) methods. Nine slaughterhouses located in Sardinia were visited. Six hundred and eight samples collected from 106 pigs and 108 environmental samples were collected and analyzed. Salmonella was isolated in 65 of 504 (12.9%) samples from finishing pigs, with an occurrence of 15...
February 22, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28224999/allograft-inflammatory-factor-1-is-a-regulator-of-transcytosis-in-m-cells
#13
Sari Kishikawa, Shintaro Sato, Satoshi Kaneto, Shigeo Uchino, Shinichi Kohsaka, Seiji Nakamura, Hiroshi Kiyono
M cells in follicle-associated epithelium (FAE) are specialized antigen-sampling cells that take up intestinal luminal antigens. Transcription factor Spi-B regulates M-cell maturation, but the molecules that promote transcytosis within M cells are not fully identified. Here we show that mouse allograft inflammatory factor 1 (Aif1) is expressed by M cells and contributes to M-cell transcytosis. FAE in Aif1(-/-) mice has suppressed uptake of particles and commensal bacteria, compared with wild-type mice. Translocation of Yersinia enterocolitica, but not of Salmonella enterica serovar Typhimurium, leading to the generation of antigen-specific IgA antibodies, is also diminished in Aif1-deficient mice...
February 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28223385/deletion-of-nudb-causes-increased-susceptibility-to-antifolates-in-escherichia-coli-and-salmonella-enterica
#14
Kun Li, Ting Li, Shan-Shan Yang, Xu-De Wang, Lei-Xin Gao, Rui-Qi Wang, Jing Gu, Xian-En Zhang, Jiao-Yu Deng
Co-trimoxazole, a fixed-dose combination of sulfamethoxazole (SMX) and trimethoprim (TMP), has been used for the treatment of bacterial infections since the 1960s. Since it has long been assumed that the synergistic effects between SMX and TMP are the consequence of targeting 2 different enzymes of bacterial folate biosynthesis, 2 genes (pabB and nudB) involved in the folate biosynthesis of Escherichia coli were deleted, and their effects on the susceptibility to antifolates were tested. The results showed that the deletion of nudB resulted in a lag of growth in minimal medium, and increased susceptibility to both SMX and TMP...
February 21, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28223148/stat3-activation-in-infection-and-infection-associated-cancer
#15
Rong Lu, Yong-Guo Zhang, Jun Sun
The Janus kinase/signal transducers and activators for transcription (JAK/STAT) pathway plays crucial roles in regulating apoptosis, proliferation, differentiation, and the inflammatory response. The JAK/STAT families are composed of four JAK family members and seven STAT family members. STAT3 plays a key role in inducing and maintaining a pro-carcinogenic inflammatory microenvironment. Recent evidence suggests that STAT3 regulates diverse biological functions in pathogenesis of diseases, such as infection and cancer...
February 18, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28222764/occurrence-of-salmonella-spp-a-comparison-between-indoor-and-outdoor-housing-of-broilers-and-laying-hens
#16
Martin Wierup, Helene Wahlström, Elina Lahti, Helena Eriksson, Désirée S Jansson, Åsa Odelros, Linda Ernholm
BACKGROUND: Outdoor production of poultry is rapidly increasing, which could be associated with increased risks for exposure to different environmental sources of Salmonella. We report a comparison on the occurrence of Salmonella during 2007-2015 in broilers and laying hens in outdoor and indoor production subjected to the same requirements for the prevention and control of Salmonella as applied in Sweden. RESULTS: Our results give no indication that, during the period studied, the exposure to Salmonella in outdoor poultry production was higher than in the indoor production...
February 21, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28222186/alpk1-controls-tifa-traf6-dependent-innate-immunity-against-heptose-1-7-bisphosphate-of-gram-negative-bacteria
#17
Milica Milivojevic, Anne-Sophie Dangeard, Christoph Alexander Kasper, Therese Tschon, Mario Emmenlauer, Claudine Pique, Pamela Schnupf, Julie Guignot, Cécile Arrieumerlou
During infection by invasive bacteria, epithelial cells contribute to innate immunity via the local secretion of inflammatory cytokines. These are directly produced by infected cells or by uninfected bystanders via connexin-dependent cell-cell communication. However, the cellular pathways underlying this process remain largely unknown. Here we perform a genome-wide RNA interference screen and identify TIFA and TRAF6 as central players of Shigella flexneri and Salmonella typhimurium-induced interleukin-8 expression...
February 21, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28221989/evaluation-of-a-multiplex-pcr-assay-for-the-identification-of-salmonella-serovars-enteritidis-and-typhimurium-using-retail-and-abattoir-samples
#18
Dele Ogunremi, Susan Nadin-Davis, Andrée Ann Dupras, Imelda Gálvan Márquez, Katayoun Omidi, Louise Pope, John Devenish, Teresa Burke, Ray Allain, Daniel Leclair
A multiplex PCR was developed to identify the two most common serovars of Salmonella causing foodborne illness in Canada, namely, serovars Enteritidis and Typhimurium. The PCR was designed to amplify DNA fragments from four Salmonella genes, namely, invA gene (211-bp fragment), iroB gene (309-bp fragment), Typhimurium STM 4497 (523-bp fragment), and Enteritidis SE147228 (612-bp fragment). In addition, a 1,026-bp ribosomal DNA (rDNA) fragment universally present in bacterial species was included in the assay as an internal control fragment...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221987/quantifying-bacterial-cross-contamination-rates-between-fresh-cut-produce-and-hands
#19
Dane A Jensen, Michelle D Danyluk, Linda J Harris, Donald W Schaffner
This study quantifies the cross-contamination rates between fresh-cut produce and hands using a nalidixic acid-resistant nonpathogenic Enterobacter aerogenes and cocktails of rifampin-resistant Salmonella or Escherichia coli O157:H7 strains. Volunteers performed the E. aerogenes experiments (n = 20), and one of the authors performed the Salmonella and E. coli O157:H7 experiments multiple times (n =15 and n =10, respectively). Each participant handled 25 g of fresh-cut carrots, celery, or cantaloupe in two different scenarios...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221986/induction-of-viable-but-nonculturable-salmonella-in-exponentially-grown-cells-by-exposure-to-a-low-humidity-environment-and-their-resuscitation-by-catalase
#20
Yuta Morishige, Atsushi Koike, Ai Tamura-Ueyama, Fumio Amano
Salmonella is a major cause of foodborne disease that sometimes occurs in massive outbreaks around the world. This pathogen is tolerant of low-humidity conditions. We previously described a method for induction of viable but nonculturable (VBNC) Salmonella enterica serovar Enteritidis by treatment with hydrogen peroxide (H2O2) and subsequent resuscitation with 0.3 mM sodium pyruvate. Here, we report a new method for the induction of the VBNC state in Salmonella Enteritidis cells, one involving dehydration. Exposure of Salmonella Enteritidis cells to dehydration stress under poor nutritional conditions (0...
February 2017: Journal of Food Protection
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