Campylobacter

Thu, 03/19/2020 - 03:33
Campylobacteriosis is the leading foodborne bacterial diarrheal illness in many countries, with up to 80% of human cases attributed to the avian reservoir. The only control strategies currently available are stringent on-farm biosecurity and carcass treatments. Heritable differences in the resistance of chicken lines to Campylobacter colonization have been reported and resistance-associated...
Sun, 03/15/2020 - 03:57
Author(s): S. Kumar, M. Singh, D.E. Cosby, N.A. Cox, H. Thippareddi Poultry processors use antimicrobials to reduce the risk of pathogens on poultry and poultry products. Efficacy of selective and nonselective plating media to enumerate injured Salmonella (selective media—brilliant green sulfa agar and Petrifilm Enterobacteriaceae Plate Count; nonselective media—tryptic soy agar and Petrifilm...
Tue, 03/10/2020 - 03:25
Campylobacter jejuni is a major foodborne pathogen worldwide. As it forms biofilms, it can become a persistent contaminant in the food and pharmaceutical industries. In this study, it was demonstrated that C. jejuni could make more biofilm in aerobic conditions than in microaerobic conditions, and only 13.9% C. jejuni entered coccus (a VBNC state) under microaerobic conditions; however, the rate...
Fri, 03/06/2020 - 03:46
Campylobacter jejuni is a widespread zoonotic pathogen and the leading bacterial cause of foodborne gastroenteritis in humans. Previous infection studies showed disruption of intercellular contacts, induction of epithelial apoptosis, and immune activation, all three contributing to intestinal barrier dysfunction leading to diarrhea. The present study aims to determine the impact of subepithelial...
Thu, 03/05/2020 - 03:27
Antimicrobial resistance (AMR) is a major public health threat worldwide. The main objective of this study was to compare AMR in Campylobacter from broiler chickens raised on Canadian farms and their products in different geographical regions of Canada. To do this, antimicrobial susceptibility results from isolates of Campylobacter recovered from a national microbiological baseline study...
Wed, 03/04/2020 - 04:07
Helical cell shape appears throughout the bacterial phylogenetic tree. Recent exciting work characterizing cell shape mutants in a number of curved and helical Proteobacteria is beginning to suggest possible mechanisms and provide tools to assess functional significance. We focus here on Caulobacter crescentus, Vibrio cholerae, Helicobacter pylori, and Campylobacter jejuni, organisms from three...
Wed, 03/04/2020 - 01:19
The economic burden of foodborne illness has been estimated to be as high as $90 billion annually.  For policy purposes, it is often important to understand not just the overall cost of illness, but also the costs associated with individual products or groups of products. In this study, I estimate the cost of foodborne illnesses from 29 pathogens associated with non-game meat and poultry products...
Wed, 03/04/2020 - 01:19
Campylobacter is one of the most commonly reported foodborne pathogens in the U.S. Because poultry is considered a major source of Campylobacter infections in humans, reducing Campylobacter contamination in poultry products is likely the most important and effective public health strategy to reduce the burden of campylobacteriosis in humans. A comprehensive on-line survey was conducted of key...
Wed, 03/04/2020 - 01:19
The burden of foodborne illness linked to the consumption of contaminated broiler meat is high in the United States. With the increase in popularity of alternative poultry rearing and production systems, it is important to identify the difference in food safety risks presented by alternative systems when compared to conventional methods. While many studies have been conducted surveying foodborne...
Wed, 03/04/2020 - 01:18
Campylobacter is one of the most commonly reported foodborne pathogens in the U.S. Because poultry is considered a major source of Campylobacter infections in humans, reducing Campylobacter contamination in poultry products is likely the most important and effective public health strategy to reduce the burden of campylobacteriosis in humans. A comprehensive on-line survey was conducted of key...
Wed, 03/04/2020 - 01:18
The burden of foodborne illness linked to the consumption of contaminated broiler meat is high in the United States. With the increase in popularity of alternative poultry rearing and production systems, it is important to identify the difference in food safety risks presented by alternative systems when compared to conventional methods. While many studies have been conducted surveying foodborne...
Tue, 03/03/2020 - 03:37
Increasing evidence exists for the role that cattle play in the epidemiology of campylobacteriosis. In this study, the prevalence and distribution of Campylobacter jejuni were longitudinally examined at the subspecies level in the beef cattle production continuum. Animals were subdivided into two groups: those that were not administered antibiotics and those that were administered the...
Tue, 03/03/2020 - 03:25
Campylobacter jejuni and Campylobacter coli are major food-borne pathogens that cause bacterial gastroenteritis in humans, and poultry is considered as their most important reservoir. Macrolides, such as erythromycin, are the first-line choice for treatment of campylobacteriosis. In this study, of the 143 Campylobacter isolates recovered from poultry in central China during 2015–2017, 25.2% were...
Wed, 02/26/2020 - 03:36
ABSTRACT Bacterial flagella are reversible rotary motors that rotate external filaments for bacterial propulsion. Some flagellar motors have diversified by recruiting additional components that influence torque and rotation, but little is known about the possible diversification and evolution of core motor components. The mechanistic core of flagella is the cytoplasmic C ring, which functions as...
Fri, 02/21/2020 - 03:51
Campylobacter jejuni is a major cause of bacterial gastroenteritis worldwide. In this study, we report the comparative genomic and functional characteristics of C. jejuni YH002 recently isolated from retail beef liver. Whole-genome sequencing and annotation of the strain revealed novel genetic features, including an integrated intact phage element, multiple antimicrobial resistance (AMR) genes,...
Thu, 02/20/2020 - 03:37
Author(s): Haejin Hwang, Richard E. Isaacson, Randall S. SingerAbstractCampylobacteriosis caused by C. jejuni is a serious yet common foodborne disease in the U.S. The prevalence of fluoroquinolone-resistant C. jejuni from poultry has continued to increase despite the withdrawal of fluoroquinolone use in the U.S. poultry industry in 2005. To date, no clear selective pressures that explain this...
Thu, 02/20/2020 - 03:36
Author(s): G. Rasschaert, L. De Zutter, L. Herman, M. HeyndrickxAbstractCampylobacter is one of the most important causative agents of foodborne illnesses worldwide. The poultry reservoir is the main source of campylobacteriosis. Within the broiler production chain, campylobacters can only multiply in the chicken’s intestinal tract. Intervention at farm level to reduce Campylobacter is thus...
Wed, 02/19/2020 - 03:43
by Mona Alzheimer, Sarah L. Svensson, Fabian König, Matthias Schweinlin, Marco Metzger, Heike Walles, Cynthia M. Sharma The Gram-negative Epsilonproteobacterium Campylobacter jejuni is currently the most prevalent bacterial foodborne pathogen. Like for many other human pathogens, infection studies with C. jejuni mainly employ artificial animal or cell culture models that can be limited in their...
Wed, 02/19/2020 - 03:43
In 2006, New Zealand had the highest notification rate of campylobacteriosis in the world, and poultry was considered the leading source of campylobacteriosis. Implementation of food safety interventions by the poultry industry led to a decrease in the campylobacteriosis notification rate. The aim is to examine the impact of targeted food safety interventions implemented by the New Zealand...
Wed, 02/19/2020 - 03:33
In the 1980s, I found that the chromosomal β‐lactamase of Klebsiella pneumoniae LEN‐1 showed a very high similarity to the R‐plasmid‐mediated penicillinase TEM‐1 on amino acid sequence level, and this strongly suggested the TEM‐1 originated from the chromosomal penicillinases of K. pneumoniae or related bacteria. Moreover, the chromosomal K1 β‐lactamase (KOXY) of Klebsiella oxytoca was found to...
Sun, 02/16/2020 - 03:57
Author(s): Jasmien Vandeputte, An Martel, Gunther Antonissen, Marc Verlinden, Lieven De Zutter, Marc Heyndrickx, Freddy Haesebrouck, Frank Pasmans, An GarmynAbstractOral administration of antibodies is a promising strategy against various infectious diseases. Previously, it was demonstrated that passive immunization by providing hyperimmune egg yolk through the feed reduces Campylobacter jejuni...
Sun, 02/16/2020 - 03:42
Food safety problems pose a great threat to the health of consumers with the greatest burden in developing countries. Street-vended foods play a key role in providing many urban dwellers with cheap, nutritious, and accessible food, but when prepared in an unhygienic and unregulated environment, they could contribute to increased food safety burden. The study investigated the microbiological...
Fri, 02/14/2020 - 03:37
Four wild-type Campylobacter jejuni strains isolated from the cecal contents of broiler chickens were sequenced. The average genome size was 1,622,170 bp, with 1,667 to 1,761 coding sequences and 47 to 51 RNAs. Multiple genes encoding motility, intestinal colonization, toxin production, stress tolerance, and multidrug resistance were present in all the strains.
Fri, 02/14/2020 - 03:35
Author(s): Kinga Wieczorek, Łukasz Bocian, Jacek OsekAbstractThe aim of the present study was to assess the prevalence of Campylobacter on chicken carcasses tested in Poland during 2014–2018 and to evaluate the antimicrobial susceptibility of the recovered isolates. The results were compared to the previous similar investigations performed in 2009–2013 [Wieczorek K. & Osek J. (2015). A five-...
Thu, 02/13/2020 - 04:06
Intensive poultry production due to public demand raises the risk of contamination, creating potential foodborne hazards to consumers. The prevalence and microbial load of the pathogens Campylobacter, Salmonella, Staphylococcus aureus, and Escherichia coli was determined by standard methods at the farm level. After disinfection, swab samples collected from wall crevices, drinkers, and vents were...
Wed, 02/12/2020 - 10:49
Author(s): Shaban Rahimi, Sophia Kathariou, Oscar Fletcher, Jesse L. GrimesAbstractSalmonella and Campylobacter are considered major public health burdens worldwide, and poultry are known to be one of the main reservoirs for these zoonotic pathogens. This study was conducted to evaluate the effect of a commercial probiotic or direct-fed microbial (DFM) Calsporin (CSP), and prebiotic or mannan...
Wed, 02/12/2020 - 03:24
Campylobacter jejuni (C. jejuni) has been assigned as an important food-borne pathogen for human health but many pathogenicity factors of C. jejuni and human host cell responses related to the infection have not ...
Sat, 02/08/2020 - 03:24
The in vitro resistance of selected red/orange complex periodontal pathogens to tinidazole was compared with four other antibiotics. Subgingival biofilm samples from 88 adults with severe periodontitis were anaerobically incubated on enriched Brucella blood agar with and without supplementation with tinidazole (16 mg/L), metronidazole (16 mg/L), amoxicillin (8 mg/L), doxycycline (4 mg/L), or...
Thu, 02/06/2020 - 03:26
K. G. Joensen et al. In industrialized countries, the leading cause of bacterial gastroenteritis is Campylobacter jejuni. However, outbreaks are rarely reported, which may reflect limitations of surveillance, for which molecular typing is not routinely performed. To determine the frequency of genetic clusters among patients and to find links to concurrent isolates from poultry meat, broiler...
Tue, 02/04/2020 - 04:10
The gut-lymph node axis is a critical player in the symbiotic relationship between gut microbiota and the host. However, little is known about the impact of diet-related bacterial shifts in the gut lumen on bacterial translocation into lymph nodes. Here, we (i) characterized changes in the viable microbiota composition along the ileal digesta-mucosa-lymph node axis and (ii) examined the effect of...
Thu, 01/30/2020 - 03:36
Pathogenic microorganisms use various mechanisms to conserve energy in host tissues and environmental reservoirs. One widespread but often overlooked means of energy conservation is through the consumption or production of molecular hydrogen (H2). Here, we comprehensively review the distribution, biochemistry, and physiology of H2 metabolism in pathogens. Over 200 pathogens and pathobionts carry...
Thu, 01/30/2020 - 03:25
Foodborne infections, mainly those attributable to Campylobacter, are one of the most common causes of intestinal diseases, of bacterial origin in humans. Although the vehicle of transmission is not always identified, the most common vehicles are poultry, poultry products, and contaminated water. In Southern Benin, an excessive use of poultry manure as fertilizer in vegetable farms was noted....
Wed, 01/29/2020 - 03:43
The survey was undertaken to investigate the presence and antimicrobial susceptibility profile of Salmonella spp. in raw and ready-to-eat (RTE) foods, and Campylobacter spp. in the retail raw chicken meat collected in two counties of Transylvania, Romania. A total of 13.1% (51/388) of the examined food samples were found to be Salmonella positive, with a distribution of 14.7% (48/326) in the raw...
Sun, 01/26/2020 - 03:27
The aim of this study was to investigate if HtrA is responsible for differences in adherence and invasion of Campylobacter jejuni towards human and chicken cell lines. Gentamicin protection assays were performed with either human Caco‐2 or chicken 2G4 cells using C. jejuni strain NCTC11168 to compare the adhesion and invasion rates towards these two cell types. The results revealed significant...
Fri, 01/24/2020 - 03:34
The complete genome sequence of Campylobacter jejuni YH003, isolated from retail chicken, was determined using PacBio and Illumina technologies. The assembled genome is 1,743,985 bp (G+C content of 30.3%). Genome annotation revealed several genes encoding virulence and antibiotic resistance factors, including a type VI secretion system, cytolethal distending toxins, and a multidrug efflux system.
Fri, 01/24/2020 - 03:24
Poultry is a major reservoir for the pathogen Campylobacter jejuni. C. jejuni inhabits the poultry gastrointestinal tract as a part of the gut microbiota. The objective of this study was to evaluate both the survival of C. jejuni and the changes in the population dynamics of the cecal microbiome during an in vitro C. jejuni inoculation in the presence or absence of the functional metabolites of...
Wed, 01/22/2020 - 03:28
A newly isolated Campylobacter jejuni bacteriophage CJ01 was partially characterized and might be a potential biocontrol agent to improve food safety. Abstract Campylobacter jejuni is a major foodborne pathogen causing acute bacterial enteritis worldwide. Screening of novel bacteriophages as biocontrol tools to eliminate C. jejuni in food during pre‐ and postharvest is an emerging research field...
Wed, 01/22/2020 - 03:24
This study investigated the antibiotic resistance, virulence profiles, and clonality of Campylobacter jejuni and Campylobacter coli isolated from an intensive poultry farming system in KwaZulu-Natal, South Africa. Following ethical approval, samples were collected over six weeks using the farm-to-fork approach. Campylobacter spp. were identified using culture, confirmed and differentiated to...
Sat, 01/18/2020 - 03:33
by Mohamed Elhadidy, Mohamed Medhat Ali, Ayman El-Shibiny, William G. Miller, Walid F. Elkhatib, Nadine Botteldoorn, Katelijne Dierick The aim of this study is to characterize the antimicrobial resistance of Campylobacter jejuni recovered from diarrheal patients in Belgium, focusing on the genetic diversity of resistant strains and underlying molecular mechanisms of resistance among Campylobacter...
Thu, 01/16/2020 - 03:33
ABSTRACT Campylobacter jejuni is a leading cause of bacterial diarrhea worldwide and is associated with high rates of mortality and growth stunting in children inhabiting low- to middle-resource countries. To better understand the impact of breastfeeding on Campylobacter infection in infants in sub-Saharan Africa and South Asia, we examined fecal microbial compositions, bacterial isolates, and...
Wed, 01/15/2020 - 03:23
This study investigated occurrence and antimicrobial resistance profiles of Campylobacter spp. isolates in beef cattle on five cow–calf operations in South Africa. A total of 537 fecal samples from adult beef cattle (n = 435) and rectal swabs from calves (n = 102) were screened for Campylobacter jejuni, Campylobacter coli, and Campylobacter upsaliensis by culture and polymerase chain reaction....
Tue, 01/14/2020 - 03:34
Campylobacter jejuni causes acute gastroenteritis world-wide and is transmitted primarily through poultry, in which it is often a commensal member of the intestinal microbiota. Previous RNASeq experiments showed that transcripts from an operon encoding a high affinity phosphate transporter (PstSCAB) of C. jejuni were among the most abundant when grown in chickens. Elevated levels of the pstSCAB...
Tue, 01/14/2020 - 03:23
Campylobacter jejuni is one of the most common zoonotic pathogens worldwide. Although the main sources of human C. jejuni infection are livestock, wildlife can also affect C. jejuni transmission in humans. However, it remains unclear whether wild mice harbor C. jejuni and are involved in the “environment–wildlife–livestock–human” transmission cycle of C. jejuni in humans. Here, we characterized C...
Sat, 01/11/2020 - 03:25
Aim Following previous research on improving the cleaning of crates used to transport broiler chickens from the farm to the abattoir, a demonstration project was undertaken to investigate improvements in crate washing on a commercial scale. Methods and Results The soak tank of a conventional crate washing system was replaced with a high‐performance washer fitted with high‐volume, high‐pressure...
Fri, 01/10/2020 - 03:30
Author(s): Anastasia E. Lytou, Chrissanthi T. Renieri, Agapi I. Doulgeraki, George-John E. Nychas, Efstathios Z. PanagouAbstractThe prevalence of three pathogens in marinated chicken products and the evaluation of their quality by microbiological and sensory analysis were assessed. Eighty (80) samples obtained from several meat retail markets in Greece were analyzed for the presence of...
Fri, 01/10/2020 - 03:23
Campylobacter can enter a viable but non-culturable (VBNC) state to evade various stresses, and this state is undetectable using traditional microbiological culturing techniques. These VBNC bacterial cells retain metabolism and demonstrate pathogenic potential due to their ability to resuscitate under favorable conditions. Rapid and accurate determination of VBNC Campylobacter is critical to...
Thu, 01/09/2020 - 04:03
Author(s): Torrung Vetchapitak, Taisuke Shinki, Satomi Sasaki, Takako Taniguchi, Taradon Luangtongkum, Naoaki MisawaAbstractThe present study was conducted to evaluate the efficacy of a new technique for removal of campylobacters from naturally contaminated free-range and broiler chicken carcasses. The carcasses, obtained from commercial processing plants after evisceration, were immersed in 0.1...
Thu, 01/09/2020 - 03:53
Campylobacter species are known as biofilm‐forming bacteria in food systems. The aim of this study was to evaluate the antimicrobial and antibiofilm effects of cinnamaldehyde against Campylobacter jejuni and Campylobacter coli isolated from chicken meat. The biofilm‐forming C. jejuni and C. coli strains from chicken meat were investigated using minimum inhibitory concentration (MIC) and...
Thu, 01/09/2020 - 03:42
The prevalence of human infections with the zoonotic pathogen Campylobacter jejuni is rising worldwide. Therefore, the identification of compounds with potent anti-pathogenic and anti-inflammatory properties for ...
Fri, 01/03/2020 - 04:13
Campylobacter jejuni is the main cause of bacterial foodborne disease in humans, who are exposed mostly by consumption of contaminated poultry products. C. jejuni strain NADC 20827 was isolated from the feces of turkeys naturally colonized with Campylobacter spp. We present the complete annotated genome and plasmid sequences of strain NADC 20827.

Pages