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Author Charlene Jackson

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Evaluation of a new chromogenic agar for the detection of environmental Enterococcus.

Sohyun Cho, Lari M Hiott, Tiffanie A Woodley, Jonathan G Frye, Charlene R Jackson,

CHROMagar Enterococcus (CHR), a new chromogenic medium not yet available for commercial purchase, was evaluated for the isolation of Enterococcus from environmental water samples. Its performance was evaluated in comparison to commercially available media, Enterococcosel agar and m-Enterococcus agar. Three consecutive tests were conducted with each test being performed with ... Read more >>

J Microbiol Methods (Journal of microbiological methods)
[2020, 178:106082]

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Draft genome sequence of a blaNDM-1- and blaOXA-244-carrying multidrug-resistant Escherichia coli D-ST69 clinical isolate from Egypt.

Ahmed M Soliman, Hazem Ramadan, Mustafa Sadek, Hirofumi Nariya, Toshi Shimamoto, Lari M Hiott, Jonathan G Frye, Charlene R Jackson, Tadashi Shimamoto,

OBJECTIVES:This study describes the first draft genome sequence of a multidrug-resistant (MDR) Escherichia coli D-ST69 clinical isolate from Egypt carrying blaNDM-1 and blaOXA-244. METHODS:The strain was isolated in December 2014 from a wound pus swab of a male patient in the city of Kafr El-Sheikh using MacConkey agar containing 2 ... Read more >>

J Glob Antimicrob Resist (Journal of global antimicrobial resistance)
[2020, 22:832-834]

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Emergence of Salmonella Genomic Island 1 Variant SGI1-C in a Multidrug-Resistant Clinical Isolate of Klebsiella pneumoniae ST485 from Egypt.

Ahmed M Soliman, Hazem Ramadan, Eslam Ghazy, Liansheng Yu, Junzo Hisatsune, Shizuo Kayama, Motoyuki Sugai, Hirofumi Nariya, Toshi Shimamoto, Charlene R Jackson, Tadashi Shimamoto,

Antimicrob. Agents Chemother. (Antimicrobial agents and chemotherapy)
[2020, 64(9):]

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Antimicrobial Resistance Gene Detection and Plasmid Typing Among Multidrug Resistant Enterococci Isolated from Freshwater Environment.

Sohyun Cho, John B Barrett, Jonathan G Frye, Charlene R Jackson,

In this study, mechanisms of antimicrobial resistance (AR) as well as the abundance and diversity of plasmids were determined among multidrug resistant (MDR) enterococci from surface water in GA, USA. A total of 51 enterococci isolates were screened for the presence of 27 AR genes conferring resistance to ciprofloxacin, erythromycin, ... Read more >>

Microorganisms (Microorganisms)
[2020, 8(9):]

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Serotyping of sub-Saharan Africa Salmonella Strains Isolated from Different Sources Using Multiplex PCR and Capillary Electrophoresis Analysis and whole Genome Sequencing

Assèta Kagambèga, Lari Hiott, David Boyle, Elizabeth McMillan, Kaisa Haukka, Poonam Sharma, Sushim Gupta, Hazem Ramadan, Sohyun Cho, Shaheen Humayoun, Tiffanie Woodley, Nicolas Barro, Charlene Jackson, Jonathan Frye,

Abstract The authors have withdrawn this preprint due to author disagreement. ... Read more >>

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Staphylococci in poultry intestines: a comparison between farmed and household chickens.

Muhammad Ali Syed, Hakim Ullah, Sadia Tabassum, Bushra Fatima, Tiffanie A Woodley, Hazem Ramadan, Charlene R Jackson,

Both pathogenic as well as nonpathogenic species of staphylococci have been reported in poultry, but these studies have not compared staphylococcal flora of both farmed and household broiler chickens. Staphylococci from farmed (n = 51) and household chicken intestines (n = 43) were isolated and tested for resistance to antimicrobials, ... Read more >>

Poult. Sci. (Poultry science)
[2020, 99(9):4549-4557]

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Antimicrobial-resistant pathogens in water.

Charlene R Jackson, Jonathan G Frye, Sohyun Cho,

Lett. Appl. Microbiol. (Letters in applied microbiology)
[2020, 71(1):2]

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Comparison of Antimicrobial Resistance and Pan-Genome of Clinical and Non-Clinical Enterococcus cecorum from Poultry Using Whole-Genome Sequencing.

Poonam Sharma, Sushim K Gupta, John B Barrett, Lari M Hiott, Tiffanie A Woodley, Subhashinie Kariyawasam, Jonathan G Frye, Charlene R Jackson,

Enterococcus cecorum is an emerging avian pathogen, particularly in chickens, but can be found in both diseased (clinical) and healthy (non-clinical) poultry. To better define differences between E. cecorum from the two groups, whole-genome sequencing (WGS) was used to identify and compare antimicrobial resistance genes as well as the pan-genome ... Read more >>

Foods (Foods (Basel, Switzerland))
[2020, 9(6):]

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Antimicrobial Resistance, Genetic Diversity and Multilocus Sequence Typing of Escherichia coli from Humans, Retail Chicken and Ground Beef in Egypt.

Hazem Ramadan, Charlene R Jackson, Jonathan G Frye, Lari M Hiott, Mohamed Samir, Amal Awad, Tiffanie A Woodley,

Contamination of retail foods with foodborne pathogens, particularly the antimicrobial resistant ones, poses a persistent threat to human health. There is a dearth of information about the overlapping Escherichia coli (E. coli) lineages circulating among retail foods and humans in Egypt. This study aimed to determine the clonal diversity of ... Read more >>

Pathogens (Pathogens (Basel, Switzerland))
[2020, 9(5):]

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Draft Genomic Sequences of Three Escherichia coli Sequence Type 131 Isolates (H45, H43ii, and H43iii) from Patients in Lagos, Nigeria.

Yishan Yang, Christopher H Sommers, Eyitayo O Adenipekun, Marina Ceruso, Charlene R Jackson, Tiffanie A Woodley, John B Barrett, Lari M Hiott, Jonathan G Frye, Yanhong Liu,

Escherichia coli sequence type 131 (ST131) has recently emerged as a leading multidrug-resistant pathogen that causes urinary tract and bloodstream infections in humans. Here, we report the draft genomic sequences of three E. coli ST131 isolates, H45, H43ii, and H43iii, from urine samples of patients in Lagos, Nigeria. ... Read more >>

(Microbiology resource announcements)
[2020, 9(17):]

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Circulation of emerging NDM-5-producing Escherichia coli among humans and dogs in Egypt.

Hazem Ramadan, Sushim K Gupta, Poonam Sharma, Marwa Ahmed, Lari M Hiott, John B Barrett, Tiffanie A Woodley, Jonathan G Frye, Charlene R Jackson,

The emergence of NDM-producing Escherichia coli has considerably threatened human and animal health worldwide. This study describes for the first time in Egypt, the draft genome sequences of emerging NDM-5-producing E. coli from humans and dogs, and investigates genetic relatedness between isolates from both sources. Two E. coli from human urine and ... Read more >>

Zoonoses Public Health (Zoonoses and public health)
[2020, 67(3):324-329]

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Genomic Analysis of Multidrug-Resistant Escherichia coli from Surface Water in Northeast Georgia, United States: Presence of an ST131 Epidemic Strain Containing blaCTX-M-15 on a Phage-Like Plasmid.

Sohyun Cho, Sushim K Gupta, Elizabeth A McMillan, Poonam Sharma, Hazem Ramadan, Thomas Jové, Charlene R Jackson, Jonathan G Frye,

Surface water is suspected of playing a role in the development and spread of antimicrobial-resistant (AR) bacteria, including human pathogens. In our previous study, 496 Escherichia coli isolates were recovered from water samples collected over a 2-year period from the Upper Oconee watershed, Athens, GA, United States, of which 34 ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, 26(5):447-455]

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Genetic Characterization of Antimicrobial-Resistant Escherichia coli Isolated from a Mixed-Use Watershed in Northeast Georgia, USA.

Sohyun Cho, Hoang Anh Thi Nguyen, Jacob M McDonald, Tiffanie A Woodley, Lari M Hiott, John B Barrett, Charlene R Jackson, Jonathan G Frye,

In order to determine the role of surface water in the development and spread of antibiotic-resistant (AR) bacteria, water samples were collected quarterly from 2015 to 2016 from a mixed-use watershed in Georgia. In our previous study, 496 Escherichia coli were isolated from surface water, out of which, 34 isolates ... Read more >>

Int J Environ Res Public Health (International journal of environmental research and public health)
[2019, 16(19):]

Cited: 1 time

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Genomic comparison of diverse Salmonella serovars isolated from swine.

Sushim K Gupta, Poonam Sharma, Elizabeth A McMillan, Charlene R Jackson, Lari M Hiott, Tiffanie Woodley, Shaheen B Humayoun, John B Barrett, Jonathan G Frye, Michael McClelland,

Food animals act as a reservoir for many foodborne pathogens. Salmonella enterica is one of the leading pathogens that cause food borne illness in a broad host range including animals and humans. They can also be associated with a single host species or a subset of hosts, due to genetic ... Read more >>

PLoS One (PloS one)
[2019, 14(11):e0224518]

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Genome Analysis of Multidrug-Resistant Escherichia coli Isolated from Poultry in Nigeria.

Poonam Sharma, Sushim K Gupta, Eyitayo O Adenipekun, John B Barrett, Lari M Hiott, Tiffanie A Woodley, Bamidele A Iwalokun, Afolabi Oluwadun, Hazem H Ramadan, Jonathan G Frye, Charlene R Jackson,

Escherichia coli is one of the most common commensal bacteria of the gastrointestinal tract of humans and warm-blooded animals. Contaminated poultry can lead to disease outbreaks in consumers causing massive economic losses in the poultry industry. Additionally, commensal E. coli can harbor antibiotic resistance genes that can be transferred to ... Read more >>

Foodborne Pathog. Dis. (Foodborne pathogens and disease)
[2020, 17(1):1-7]

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A newly developed Escherichia coli isolate panel from a cross section of U.S. animal production systems reveals geographic and commodity-based differences in antibiotic resistance gene carriage.

Thomas F Ducey, Lisa M Durso, Abasiofiok M Ibekwe, Robert S Dungan, Charlene R Jackson, Jonathan G Frye, B Lana Castleberry, Diana M C Rashash, Michael J Rothrock, Debbie Boykin, Terence R Whitehead, Zeanmarj Ramos, Morgan McManus, Kimberly L Cook,

There are limited numbers of Escherichia coli isolate panels that represent United States food animal production. The majority of existing Escherichia coli isolate panels are typically designed: (i) to optimize genetic and/or phenotypic diversity; or (ii) focus on human isolates. To address this shortfall in agriculturally-related resources, we have assembled ... Read more >>

J Hazard Mater (Journal of hazardous materials)
[2020, 382:120991]

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Plasmid Replicons and β-Lactamase-Encoding Genes of Multidrug-Resistant Escherichia coli Isolated from Humans and Food Animals in Lagos, Southwest Nigeria.

Eyitayo O Adenipekun, Charlene R Jackson, Hazem Ramadan, Bamidele A Iwalokun, Jonathan G Frye, John B Barrett, Lari M Hiott, Tiffanie A Woodley, Sandra L House, Elizabeth A McMillan, Poonam Sharma, Afolabi Oluwadun,

As resistance to the β-lactam class of antibiotics has become a worldwide problem, multidrug-resistant (MDR) human (n = 243) and food animal (n = 211) isolates from Lagos, Nigeria were further tested to characterize β-lactamase-encoding genes and plasmid replicons. Four β-lactamase-encoding genes (blaCMY, blaCTX-M, blaOXA, and blaTEM) were detected using PCR-based replicon typing, 13 ... Read more >>

Microb Drug Resist (Microbial drug resistance (Larchmont, N.Y.))
[2019, 25(10):1410-1423]

Cited: 1 time

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Detection and Molecular Characterization of Staphylococci from Eggs of Household Chickens.

Muhammad Ali Syed, Charlene R Jackson, Hazem Ramadan, Riazuddin Afridi, Shehr Bano, Sumera Bibi, Bushra Fatima, Sadia Tabassum, Bushra Jamil, Muhammad Fiaz Khan, John B Barrett, Tiffanie A Woodley,

Eggs are a healthy and nutritious food source, but may be contaminated by bacteria. Previous studies have reported the presence of staphylococci in eggs of farmed chickens, but no study has evaluated the staphylococcal population of eggs from household chickens. In this study, staphylococci from eggs (n = 275) of household chickens ... Read more >>

Foodborne Pathog. Dis. (Foodborne pathogens and disease)
[2019, 16(8):550-557]

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Antimicrobial Resistance Genes, Cassettes, and Plasmids Present in Salmonella enterica Associated With United States Food Animals.

Elizabeth A McMillan, Sushim K Gupta, Laura E Williams, Thomas Jové, Lari M Hiott, Tiffanie A Woodley, John B Barrett, Charlene R Jackson, Jamie L Wasilenko, Mustafa Simmons, Glenn E Tillman, Michael McClelland, Jonathan G Frye,

The ability of antimicrobial resistance (AR) to transfer, on mobile genetic elements (MGEs) between bacteria, can cause the rapid establishment of multidrug resistance (MDR) in bacteria from animals, thus creating a foodborne risk to human health. To investigate MDR and its association with plasmids in Salmonella enterica, whole genome sequence ... Read more >>

(Frontiers in microbiology)
[2019, 10:832]

Cited: 4 times

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Draft genome sequence of a human-associated streptogramin-resistant Staphylococcus aureus.

Sushim K Gupta, Poonam Sharma, John B Barrett, Lari M Hiott, Tiffanie A Woodley, Jonathan G Frye, Charlene R Jackson,

OBJECTIVES:Staphylococcus aureus is one of the leading causes of nosocomial and community-acquired infections. Treatment of these infections with macrolide-lincosamide-streptogramin (MLS) antibiotics has led to resistance to these antibiotics via various mechanisms. S. aureus strain CIP108540, isolated from a human in France, has been previously shown to exhibit resistance to the ... Read more >>

J Glob Antimicrob Resist (Journal of global antimicrobial resistance)
[2019, 16:72-73]

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An assay for determining the susceptibility of Salmonella isolates to commercial and household biocides.

Shaheen B Humayoun, Lari M Hiott, Sushim K Gupta, John B Barrett, Tiffanie A Woodley, John J Johnston, Charlene R Jackson, Jonathan G Frye,

Poultry and meat products contaminated with Salmonella enterica are a major cause of foodborne illness in the United States. The food industries use a wide variety of antimicrobial interventions to reduce bacterial contamination. However, little is known about Salmonella susceptibility to these compounds and some studies have shown a concerning ... Read more >>

PLoS One (PloS one)
[2018, 13(12):e0209072]

Cited: 2 times

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Multidrug resistant Mannheimia haemolytica isolated from high-risk beef stocker cattle after antimicrobial metaphylaxis and treatment for bovine respiratory disease.

Amelia R Woolums, Brandi B Karisch, Jonathan G Frye, William Epperson, David R Smith, John Blanton, Frank Austin, Ray Kaplan, Lari Hiott, Tiffanie Woodley, Sushim K Gupta, Charlene R Jackson, Michael McClelland,

Antimicrobial resistance (AMR) in bacterial respiratory pathogens in high-risk stocker cattle has been poorly characterized. The objective of this study was to describe the prevalence of multidrug resistant (MDR; resistance to > 3 antimicrobial classes) respiratory pathogens in 50 conventionally managed stocker cattle over 21 days after arrival. Cattle received ... Read more >>

Vet. Microbiol. (Veterinary microbiology)
[2018, 221:143-152]

Cited: 7 times

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Draft genome sequences of two ciprofloxacin-resistant Salmonella enterica subsp. enterica serotype Kentucky ST198 isolated from retail chicken carcasses in Egypt.

Hazem Ramadan, Sushim K Gupta, Poonam Sharma, Khalid I Sallam, Lari M Hiott, Hagar Elsayed, John B Barrett, Jonathan G Frye, Charlene R Jackson,

OBJECTIVES:Salmonella enterica serotypes, particularly antimicrobial-resistant strains, pose a major threat to public health worldwide. This study describes the draft genome sequences of two ciprofloxacin-resistant Salmonella enterica subsp. enterica serotype Kentucky isolates (H5 and H18) recovered from chicken carcass rinsates in Mansoura, Egypt. METHODS:Antimicrobial susceptibility phenotypes were determined for the two ... Read more >>

J Glob Antimicrob Resist (Journal of global antimicrobial resistance)
[2018, 14:101-103]

Cited: 2 times

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Contribution of Healthy Chickens to Antimicrobial-Resistant Escherichia coli Associated with Human Extraintestinal Infections in Egypt.

Hazem H Ramadan, Charlene R Jackson, Samaa A Taha, Amira A Moawad, John B Barrett, Tiffanie A Woodley,

BACKGROUND:Chickens are considered potential reservoirs for human extraintestinal infections with pathogenic Escherichia coli. However, information about genetic relatedness between E. coli from healthy chickens and human patients is still limited. METHODS AND RESULTS:In this study, clinical samples from patients with extraintestinal infections and healthy broiler chickens were collected from geographically ... Read more >>

Vector Borne Zoonotic Dis. (Vector borne and zoonotic diseases (Larchmont, N.Y.))
[2018, 18(8):408-416]

Cited: 2 times

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Prevalence and characterization of Escherichia coli isolated from the Upper Oconee Watershed in Northeast Georgia.

Sohyun Cho, Lari M Hiott, John B Barrett, Elizabeth A McMillan, Sandra L House, Shaheen B Humayoun, Eric S Adams, Charlene R Jackson, Jonathan G Frye,

Surface waters are important sources of water for drinking, industrial, agricultural, and recreational uses; hence, contamination of water by fecal, pathogenic, or antimicrobial resistant (AR) bacteria is a major environmental and public health concern. However, very little data is available on prevalence of these bacteria in surface water throughout a ... Read more >>

PLoS ONE (PloS one)
[2018, 13(5):e0197005]

Cited: 2 times

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