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Author Mark E Berrang

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An open-source program (Haplo-ST) for whole-genome sequence typing shows extensive diversity of Listeria monocytogenes in outdoor environments and poultry processing plants.

Swarnali Louha, Richard J Meinersmann, Zaid Abdo, Mark E Berrang, Travis C Glenn,

A reliable and standardized classification of Listeria monocytogenes is important for accurate strain identification during outbreak investigations. Current whole-genome sequencing (WGS) based approaches for strain characterization are either difficult to standardize, rendering them less suitable for data exchange, or are not freely available. Thus, we developed a portable and open-source ... Read more >>

Appl Environ Microbiol (Applied and environmental microbiology)
[2020, :]

Cited: 0 times

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Recoverability of Listeria monocytogenes after coculture with Tetrahymena pyriformis

Richard J Meinersmann, Mark E Berrang, Luanne L Rigsby,

Bactivory by protozoa is a major factor that limits the number of bacteria in nature and may control the presence of Listeria monocytogenes. The effectiveness of Tetrahymena pyriformis destruction of L. monocytogenes was measured. Within 1 hr, 35–40 T. pyriformis cells ingested an average of 1,219 CFU of L. monocytogenes. Gentamicin ... Read more >>

(Journal of food safety.)
[2020, 40(3):Not Available]

Cited: 0 times

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Draft Genome Sequences of Two Potentially Novel Bacillus Isolates from Backyard and Commercial Chicken Gastrointestinal Tracts.

Jitendra Keshri, Rocio Ramirez, Mark E Berrang, Brian B Oakley,

Here, we present the draft genome sequences of two Bacillus strains, HF117_J1_D and USDA818B3_A, isolated in Pomona, California, from the gastrointestinal (GI) tract of backyard and commercial broiler chickens, respectively. The draft genomes of both strains appear to represent novel species. ... Read more >>

Microbiol Resour Announc (Microbiology resource announcements)
[2020, 9(22):]

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Detection of multiple naturally occurring Salmonella serotypes from commercial broiler carcasses with conventional methods

Nelson A Cox, Mark E Berrang, Sandra L House, Arthur Hinton, J Eric Line, Latoya T Wiggins,

Many laboratories sampling foods for Salmonella are interested only in presence or absence of Salmonella, so only one colony may be selected. The objectives of this study were to use two selective enrichment broths and two selective agar plating media for Salmonella recovery from naturally contaminated broiler carcass rinsates and ... Read more >>

(Journal of food safety.)
[2020, 40(2):Not Available]

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Draft Genome Sequences of Two Paenibacillus Isolates from Goose and Chicken Gastrointestinal Material.

Jitendra Keshri, Rocio Ramirez, Molly K Svendsen, Haley R Keillor, Madeline L Moss, Haley J Jordan, Kristina M Smith, Patrick N Ball, Bruce S Seal, Mark E Berrang, Brian B Oakley,

Here, we present the draft genome sequences of two Paenibacillus strains, An7 and USDA918EY, isolated from goose feces (Bend, OR, USA) and chicken ceca (Pomona, CA, USA), respectively. These data may assist with analyses of microorganisms associated with free-ranging and commercial avian species. ... Read more >>

Microbiol Resour Announc (Microbiology resource announcements)
[2020, 9(10):]

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Population Analyses Reveal Preenrichment Method and Selective Enrichment Media Affect Salmonella Serovars Detected on Broiler Carcasses.

Nelson A Cox, Mark E Berrang, Sandra L House, David Medina, Kimberly L Cook, Nikki W Shariat,

Poultry is a major Salmonella reservoir, but conventional culture-based methods typically identify the most abundant serovars while those less abundant remain undetected. Choice of enrichment procedure also introduces bias, and for broiler carcasses, a 1-min rinse before preenrichment is insufficient to release all Salmonella present. The inability to assess serovar ... Read more >>

J. Food Prot. (Journal of food protection)
[2019, 82(10):1688-1696]

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Neutral pH sodium chlorite decreases recovery of Campylobacter in neutralizing buffered peptone water from simulated broiler carcass rinses

Gary R Gamble, Mark E Berrang, Douglas E Cosby, Nelson A Cox, Arthur Hinton,

The goal of this study was to evaluate factors causing low recovery of Campylobacter during regulatory sampling following acidified sodium chlorite (ASC) treatment of broiler carcasses and subsequent carry‐over into neutralizing buffered peptone water (nBPW) rinses. Solution alkalinity was shown to positively correlate with the presence of un‐reduced chlorite anion ... Read more >>

(Journal of food safety.)
[2019, 39(4):Not Available]

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Dry and heat stress affects H2S production of Salmonella on selective plating media.

Kurt E Richardson, Nelson A Cox, Doug E Cosby, Mark E Berrang, Nicole L Holcombe, Cheryl E Weller,

The pH of Salmonella pre-enrichment media can become acidic (pH 4.0-5.0) when feeds/ingredients are incubated for 24 h. Salmonella in feed that have been stressed by heat and desiccation exhibit different pH tolerances than non-stressed cultures. Acidic conditions can result in cell injury/death and affect biochemical pathways. In this study, eight ... Read more >>

J Environ Sci Health B (Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes)
[2019, 54(4):313-316]

Cited: 0 times

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The cecal microbiome of commercial broiler chickens varies significantly by season.

Brian B Oakley, Elton J R Vasconcelos, Pedro P V P Diniz, Kimberly N Calloway, Ella Richardson, Richard J Meinersmann, Nelson A Cox, Mark E Berrang,

Next-generation DNA sequencing is rapidly becoming a powerful tool for food animal management. One valuable use of this technology is to re-examine long-standing observations of performance differences associated with animal husbandry practices to better understand how these differences may be modulated by the gastrointestinal (GI) microbiome. The influences of environmental ... Read more >>

Poult. Sci. (Poultry science)
[2018, 97(10):3635-3644]

Cited: 2 times

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Impact of desiccation and heat exposure stress on Salmonella tolerance to acidic conditions.

Kurt E Richardson, Nelson A Cox, Douglas E Cosby, Mark E Berrang,

In a recent study, the pH of commonly used Salmonella pre-enrichment media became acidic (pH 4.0 to 5.0) when feed or feed ingredients were incubated for 24 h. Acidic conditions have been reported to injure or kill Salmonella. In this study, cultures of four known feed isolates (S. montevideo, S. senftenberg, ... Read more >>

J Environ Sci Health B (Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes)
[2018, 53(2):141-144]

Cited: 2 times

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Passage of Campylobacter jejuni and Campylobacter coli Subtypes through 0.45- and 0.65-Micrometer-Pore-Size Nitrocellulose Filters.

Mark E Berrang, Richard J Meinersmann, Nelson A Cox,

Campylobacter can be difficult to recover from complex samples due to overgrowth by background bacteria. A 0.45- or 0.65-μm-pore-size filter overlaid on agar plates can be used as a means to separate Campylobacter from confounding non-Campylobacter cells, facilitating detection on solid plating media. It is unclear what percentage of cells ... Read more >>

J. Food Prot. (Journal of food protection)
[2017, 80(12):2029-2032]

Cited: 0 times

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Postchill Antimicrobial Treatments To Control Salmonella, Listeria, and Campylobacter Contamination on Chicken Skin Used in Ground Chicken.

Suejee Park, Mark A Harrison, Mark E Berrang,

Ground poultry products are frequently contaminated with foodborne pathogens. With the potential for increased regulatory scrutiny, it is important to use sufficient intervention strategies to control pathogen levels effectively. A large proportion of the bacteria introduced to ground chicken are likely to come from broiler skin, which is added to ... Read more >>

J. Food Prot. (Journal of food protection)
[2017, :857-862]

Cited: 3 times

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Neutralization of Bactericidal Activity Related to Antimicrobial Carryover in Broiler Carcass Rinse Samples.

Gary R Gamble, Mark E Berrang, R Jeff Buhr, Arthur Hinton, Dianna V Bourassa, Kimberly D Ingram, Eric S Adams, Peggy W Feldner, John J Johnston,

Studies were conducted to examine the ability of three chemicals to neutralize residual antibacterial activity of commercial antimicrobial chemicals used in poultry processing. Chemical antimicrobial interventions used in poultry processing may have potential for carryover into whole poultry carcass buffered peptone water (BPW) rinses collected for monitoring Salmonella contamination. Such ... Read more >>

J. Food Prot. (Journal of food protection)
[2017, 80(4):685-691]

Cited: 3 times

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Alternative Antimicrobial Commercial Egg Washing Procedures.

Lauren K Hudson, Mark A Harrison, Mark E Berrang, Deana R Jones,

Commercial table eggs are washed prior to packaging. Standard wash procedures use an alkaline pH and warm water. If a cool water method could be developed that would still provide a microbiologically safe egg, the industry may save energy costs associated with water heating. Four wash procedures were evaluated for ... Read more >>

J. Food Prot. (Journal of food protection)
[2016, 79(7):1216-1220]

Cited: 1 time

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Characterizing relationships among fecal indicator bacteria, microbial source tracking markers, and associated waterborne pathogen occurrence in stream water and sediments in a mixed land use watershed.

J Kenneth Bradshaw, Blake J Snyder, Adelumola Oladeinde, David Spidle, Mark E Berrang, Richard J Meinersmann, Brian Oakley, Roy C Sidle, Kathleen Sullivan, Marirosa Molina,

Bed sediments of streams and rivers may store high concentrations of fecal indicator bacteria (FIB) and pathogens. Due to resuspension events, these contaminants can be mobilized into the water column and affect overall water quality. Other bacterial indicators such as microbial source tracking (MST) markers, developed to determine potential sources ... Read more >>

Water Res. (Water research)
[2016, 101:498-509]

Cited: 18 times

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Effect of Simulated Sanitizer Carryover on Recovery of Salmonella from Broiler Carcass Rinsates.

Gary R Gamble, Mark E Berrang, R Jeff Buhr, Arthur Hinton, Dianna V Bourassa, John J Johnston, Kimberly D Ingram, Eric S Adams, Peggy W Feldner,

Numerous antimicrobial chemicals are currently utilized as processing aids with the aim of reducing pathogenic bacteria on processed poultry carcasses. Carryover of active sanitizer to a carcass rinse solution intended for recovery of viable pathogenic bacteria by regulatory agencies may cause false-negative results. This study was conducted to document the ... Read more >>

J. Food Prot. (Journal of food protection)
[2016, 79(5):710-714]

Cited: 5 times

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Controlling attachment and growth of Listeria monocytogenes in polyvinyl chloride model floor drains using a peroxide chemical, chitosan-arginine, or heat.

Mark E Berrang, Charles L Hofacre, Joseph F Frank,

Listeria monocytogenes can colonize a poultry processing plant as a resident in floor drains. Limiting growth and attachment to drain surfaces may help lessen the potential for cross-contamination of product. The objective of this study was to compare a hydrogen peroxide-peroxyacetic acid-based chemical to chitosan-arginine or heat to prevent attachment ... Read more >>

J. Food Prot. (Journal of food protection)
[2014, 77(12):2129-2132]

Cited: 1 time

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Successional changes in the chicken cecal microbiome during 42 days of growth are independent of organic acid feed additives.

Brian B Oakley, R Jeff Buhr, Casey W Ritz, Brian H Kiepper, Mark E Berrang, Bruce S Seal, Nelson A Cox,

Poultry remains a major source of foodborne bacterial infections. A variety of additives with presumed anti-microbial and/or growth-promoting effects are commonly added to poultry feed during commercial grow-out, yet the effects of these additives on the gastrointestinal microbial community (the GI microbiome) as the bird matures remain largely unknown. Here ... Read more >>

BMC Vet. Res. (BMC veterinary research)
[2014, 10:282]

Cited: 33 times

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Sampling by sponge wipe or skin excision for recovery of inoculated Salmonella and Campylobacter from defeathered broiler carcasses.

Mark E Berrang, Nelson A Cox, Brian B Oakley,

Broilers may carry Salmonella and Campylobacter on inner and outer surfaces upon arrival at the slaughter plant, and carcasses can be further contaminated during commercial processing. A sensitive, nondestructive, repeatable sampling method would be useful to test carcasses for levels of bacteria before and after specific processing steps to measure ... Read more >>

J. Food Prot. (Journal of food protection)
[2014, 77(5):824-827]

Cited: 1 time

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The poultry-associated microbiome: network analysis and farm-to-fork characterizations.

Brian B Oakley, Cesar A Morales, J Line, Mark E Berrang, Richard J Meinersmann, Glenn E Tillman, Mark G Wise, Gregory R Siragusa, Kelli L Hiett, Bruce S Seal,

Microbial communities associated with agricultural animals are important for animal health, food safety, and public health. Here we combine high-throughput sequencing (HTS), quantitative-PCR assays, and network analysis to profile the poultry-associated microbiome and important pathogens at various stages of commercial poultry production from the farm to the consumer. Analysis of ... Read more >>

PLoS One (PloS one)
[2013, 8(2):e57190]

Cited: 36 times

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Generation of airborne Listeria innocua from model floor drains.

Mark E Berrang, Joseph F Frank,

Listeria monocytogenes can colonize floor drains in poultry processing and further processing facilities, remaining present even after cleaning and disinfection. Therefore, during wash down, workers exercise caution to avoid spraying hoses directly into drains in an effort to prevent the escape and transfer of drain microflora to food contact ... Read more >>

J. Food Prot. (Journal of food protection)
[2012, 75(7):1328-1331]

Cited: 8 times

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Pyrosequencing-based validation of a simple cell-suspension polymerase chain reaction assay for Campylobacter with application of high-processivity polymerase and novel internal amplification controls for rapid and specific detection.

Brian B Oakley, J Eric Line, Mark E Berrang, Jessica M Johnson, R Jeff Buhr, Nelson A Cox, Kelli L Hiett, Bruce S Seal,

Although Campylobacter is an important food-borne human pathogen, there remains a lack of molecular diagnostic assays that are simple to use, cost-effective, and provide rapid results in research, clinical, or regulatory laboratories. Of the numerous Campylobacter assays that do exist, to our knowledge none has been empirically tested for specificity ... Read more >>

Diagn. Microbiol. Infect. Dis. (Diagnostic microbiology and infectious disease)
[2012, 72(2):131-138]

Cited: 5 times

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Analysis of antimicrobial resistance genes detected in multiple-drug-resistant Escherichia coli isolates from broiler chicken carcasses.

Lashanda M Glenn, Mark D Englen, Rebecca L Lindsey, Joseph F Frank, Jennifer E Turpin, Mark E Berrang, Richard J Meinersmann, Paula J Fedorka-Cray, Jonathan G Frye,

Multi-drug-resistant (MDR) bacteria in food animals are a potential problem in both animal and human health. In this study, MDR commensal Escherichia coli isolates from poultry were examined. Thirty-two E. coli isolates from broiler carcass rinses were selected based on their resistance to aminoglycosides, β-lactams, chloramphenicols, tetracyclines, and sulfonamide antimicrobials. ... Read more >>

Microb Drug Resist (Microbial drug resistance (Larchmont, N.Y.))
[2012, 18(4):453-463]

Cited: 14 times

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Ciliate ingestion and digestion: flow cytometric measurements and regrowth of a digestion-resistant Campylobacter jejuni.

Matthew R First, Matthew R First, Nina Y Park, Mark E Berrang, Richard J Meinersmann, Joan M Bernhard, Rebecca J Gast, James T Hollibaugh,

We measured ingestion and digestion rates of the pathogenic bacterium Campylobacter jejuni by a freshwater ciliate Colpoda sp. to determine whether Campylobacter is able to resist protist digestion. Campylobacter and the nonpathogenic bacterium Pseudomonas putida LH1 were labeled with a 5-chloromethylfluorescein diacetate, which fluoresces in intact and active cells but ... Read more >>

J. Eukaryot. Microbiol. (The Journal of eukaryotic microbiology)
[2012, 59(1):12-19]

Cited: 5 times

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Related antimicrobial resistance genes detected in different bacterial species co-isolated from swine fecal samples.

Jonathan G Frye, Rebecca L Lindsey, Richard J Meinersmann, Mark E Berrang, Charlene R Jackson, Mark D Englen, Jennifer B Turpin, Paula J Fedorka-Cray,

A potential factor leading to the spread of antimicrobial resistance (AR) in bacteria is the horizontal transfer of resistance genes between bacteria in animals or their environment. To investigate this, swine fecal samples were collected on-farm and cultured for Escherichia coli, Salmonella enterica, Campylobacter spp., and Enterococcus spp. which are ... Read more >>

Foodborne Pathog. Dis. (Foodborne pathogens and disease)
[2011, 8(6):663-679]

Cited: 14 times

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