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- Schmidt, John W., et al. Show all 2 Author
- Foodborne pathogens & disease 2018 v.15 no.7 pp. 444-448
- DNA; Escherichia coli; Gram-negative bacteria; Klebsiella pneumoniae; bacterial infections; beef cattle; beta-lactamase; enzyme activity; feces; genes; imipenem; metagenomics; minimum inhibitory concentration; pets; public health; quantitative polymerase chain reaction; wildlife; United States
- ... Carbapenems are classified as critically important antibiotics since they are employed when resistant Gram-negative bacterial infections fail to respond to other antibiotic therapies. Carbapenem-resistant bacteria (CRB) were traditionally understood to be rare in the U.S. food-producing animals. Recently, using quantitative polymerase chain reaction (qPCR), our group detected blaKPC₋₂ in all 72 me ...
- Schmidt, John W., et al. Show all 6 Authors
- Journal of food protection 2018 v.81 no.12 pp. 2007-2018
- DNA; Enterococcus; Escherichia coli; Salmonella enterica; acid tolerance; antibiotic resistance; antibiotics; bacteria; beef cattle; beef production; food service; genes; ground beef; metagenomics; methicillin-resistant Staphylococcus aureus; microbiome; phylogeny; production technology; quantitative polymerase chain reaction; United States
- ... U.S. ground beef with “raised without antibiotics” (RWA) label claims are perceived as harboring fewer bacteria with antimicrobial resistance (AMR) than are found in conventional (CONV) ground beef with no such label claim. A total of 370 ground beef samples from CONV (n = 191) and RWA (n = 179) production systems were collected over 13 months from three food service suppliers. The following bacte ...
- Schmidt, John W., et al. Show all 4 Authors
- Applied and environmental microbiology 2013 v.79 no.7 pp. 2273
- Escherichia coli; antibiotic resistance; cattle; ceftiofur; feces; feedlots; genes; genotype; genotyping; herds; hides and skins; humans; plasmids; pulsed-field gel electrophoresis; shedding; United States
- ... In the United States, the blaCMY-2 gene contained within incompatibility type A/C (IncA/C) plasmids is frequently identified in extended-spectrum-cephalosporin-resistant (ESCr) Escherichia coli strains from both human and cattle sources. Concerns have been raised that therapeutic use of ceftiofur in cattle may increase the prevalence of ESCr E. coli.We report that herd ESCr E. coli fecal and hide ...
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