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Plasmid distribution among Escherichia coli from livestock and associated wastewater: unraveling factors that shape the presence of genes conferring third-generation cephalosporin resistance.

Tymensen L, Booker CW, Hannon SJ, Cook SR, Jokinen C, Zaheer R, Read R, Boerlin P, McAllister T.

Environ Sci Technol. 2019 Sep 18. doi: 10.1021/acs.est.9b03486. [Epub ahead of print]


Antimicrobial resistance in Campylobacter jejuni and Campylobacter coli isolated from small poultry flocks in Ontario, Canada: A two-year surveillance study.

Varga C, Guerin MT, Brash ML, Slavic D, Boerlin P, Susta L.

PLoS One. 2019 Aug 29;14(8):e0221429. doi: 10.1371/journal.pone.0221429. eCollection 2019.


Integrating Whole-Genome Sequencing Data Into Quantitative Risk Assessment of Foodborne Antimicrobial Resistance: A Review of Opportunities and Challenges.

Collineau L, Boerlin P, Carson CA, Chapman B, Fazil A, Hetman B, McEwen SA, Parmley EJ, Reid-Smith RJ, Taboada EN, Smith BA.

Front Microbiol. 2019 May 21;10:1107. doi: 10.3389/fmicb.2019.01107. eCollection 2019. Review.


Diversity of CTX-M-positive Escherichia coli recovered from animals in Canada.

Cormier A, Zhang PLC, Chalmers G, Weese JS, Deckert A, Mulvey M, McAllister T, Boerlin P.

Vet Microbiol. 2019 Apr;231:71-75. doi: 10.1016/j.vetmic.2019.02.031. Epub 2019 Feb 23.


Antimicrobial Susceptibility and Clonal Relationship of Tetracycline Resistance Genes in netF-Positive Clostridium perfringens.

Mehdizadeh Gohari I, Boerlin P, Prescott JF.

Microb Drug Resist. 2019 May;25(4):627-630. doi: 10.1089/mdr.2018.0341. Epub 2018 Nov 15.


Sialic acid facilitates binding and cytotoxic activity of the pore-forming Clostridium perfringens NetF toxin to host cells.

Mehdizadeh Gohari I, Brefo-Mensah EK, Palmer M, Boerlin P, Prescott JF.

PLoS One. 2018 Nov 7;13(11):e0206815. doi: 10.1371/journal.pone.0206815. eCollection 2018.


Distribution of the pco Gene Cluster and Associated Genetic Determinants among Swine Escherichia coli from a Controlled Feeding Trial.

Chalmers G, Rozas KM, Amachawadi RG, Scott HM, Norman KN, Nagaraja TG, Tokach MD, Boerlin P.

Genes (Basel). 2018 Oct 18;9(10). pii: E504. doi: 10.3390/genes9100504.


Evaluating Virulence-Associated Genes and Antimicrobial Resistance of Avian Pathogenic Escherichia coli Isolates from Broiler and Broiler Breeder Chickens in Ontario, Canada.

Varga C, Brash ML, Slavic D, Boerlin P, Ouckama R, Weis A, Petrik M, Philippe C, Barham M, Guerin MT.

Avian Dis. 2018 Sep;62(3):291-299. doi: 10.1637/11834-032818-Reg.1.


Antimicrobial-Resistant E. coli from Surface Waters in Southwest Ontario Dairy Farms.

Taggar G, Rehman MA, Yin X, Lepp D, Ziebell K, Handyside P, Boerlin P, Diarra MS.

J Environ Qual. 2018 Sep;47(5):1068-1078. doi: 10.2134/jeq2018.04.0139.


Examining the epidemiology and microbiology of Clostridium difficile carriage in elderly patients and residents of a healthcare facility in southern Ontario, Canada.

Mallia G, Van Toen J, Rousseau J, Jacob L, Boerlin P, Greer A, Metcalf D, Weese JS.

J Hosp Infect. 2018 Aug;99(4):461-468. doi: 10.1016/j.jhin.2018.01.020. Epub 2018 Mar 7.


Prevalence and mechanisms of extended-spectrum cephalosporin resistance in clinical and fecal Enterobacteriaceae isolates from dogs in Ontario, Canada.

Zhang PLC, Shen X, Chalmers G, Reid-Smith RJ, Slavic D, Dick H, Boerlin P.

Vet Microbiol. 2018 Jan;213:82-88. doi: 10.1016/j.vetmic.2017.11.020. Epub 2017 Nov 21.


Risk factors for acquisition of multidrug-resistant Escherichia coli and development of community-acquired urinary tract infections.

Ukah UV, Glass M, Avery B, Daignault D, Mulvey MR, Reid-Smith RJ, Parmley EJ, Portt A, Boerlin P, Manges AR.

Epidemiol Infect. 2018 Jan;146(1):46-57. doi: 10.1017/S0950268817002680. Epub 2017 Dec 12.


Determinants of virulence and of resistance to ceftiofur, gentamicin, and spectinomycin in clinical Escherichia coli from broiler chickens in Québec, Canada.

Chalmers G, Cormier AC, Nadeau M, Côté G, Reid-Smith RJ, Boerlin P.

Vet Microbiol. 2017 May;203:149-157. doi: 10.1016/j.vetmic.2017.02.005. Epub 2017 Feb 14.


Subtyping of Canadian isolates of Salmonella Enteritidis using Multiple Locus Variable Number Tandem Repeat Analysis (MLVA) alone and in combination with Pulsed-Field Gel Electrophoresis (PFGE) and phage typing.

Ziebell K, Chui L, King R, Johnson S, Boerlin P, Johnson RP.

J Microbiol Methods. 2017 Aug;139:29-36. doi: 10.1016/j.mimet.2017.04.012. Epub 2017 Apr 26.


NetF-producing Clostridium perfringens: Clonality and plasmid pathogenicity loci analysis.

Mehdizadeh Gohari I, Kropinski AM, Weese SJ, Whitehead AE, Parreira VR, Boerlin P, Prescott JF.

Infect Genet Evol. 2017 Apr;49:32-38. doi: 10.1016/j.meegid.2016.12.028. Epub 2017 Jan 3.


Antimicrobial use in companion animals and Good Stewardship Practice.

Prescott JF, Boerlin P.

Vet Rec. 2016 Nov 12;179(19):486-488. doi: 10.1136/vr.i5908. No abstract available.


Epidemiology of Antimicrobial Resistance in Escherichia coli Isolates from Raccoons (Procyon lotor) and the Environment on Swine Farms and Conservation Areas in Southern Ontario.

Bondo KJ, Pearl DL, Janecko N, Boerlin P, Reid-Smith RJ, Parmley J, Jardine CM.

PLoS One. 2016 Nov 9;11(11):e0165303. doi: 10.1371/journal.pone.0165303. eCollection 2016.


Impact of Season, Demographic and Environmental Factors on Salmonella Occurrence in Raccoons (Procyon lotor) from Swine Farms and Conservation Areas in Southern Ontario.

Bondo KJ, Pearl DL, Janecko N, Boerlin P, Reid-Smith RJ, Parmley J, Jardine CM.

PLoS One. 2016 Sep 9;11(9):e0161497. doi: 10.1371/journal.pone.0161497. eCollection 2016.


Dissemination of the mcr-1 colistin resistance gene.

Mulvey MR, Mataseje LF, Robertson J, Nash JH, Boerlin P, Toye B, Irwin R, Melano RG.

Lancet Infect Dis. 2016 Mar;16(3):289-90. doi: 10.1016/S1473-3099(16)00067-0. No abstract available.


Plasmid Characterization and Chromosome Analysis of Two netF+ Clostridium perfringens Isolates Associated with Foal and Canine Necrotizing Enteritis.

Mehdizadeh Gohari I, Kropinski AM, Weese SJ, Parreira VR, Whitehead AE, Boerlin P, Prescott JF.

PLoS One. 2016 Feb 9;11(2):e0148344. doi: 10.1371/journal.pone.0148344. eCollection 2016.


Extended-Spectrum-Cephalosporin Resistance Genes in Escherichia coli from Beef Cattle.

Cormier AC, Chalmers G, McAllister TA, Cook S, Zaheer R, Scott HM, Booker C, Read R, Boerlin P.

Antimicrob Agents Chemother. 2015 Nov 23;60(2):1162-3. doi: 10.1128/AAC.02516-15. Print 2016 Feb. No abstract available.


Epidemiology of Salmonella on the Paws and in the Faeces of Free-Ranging Raccoons (Procyon Lotor) in Southern Ontario, Canada.

Bondo KJ, Pearl DL, Janecko N, Boerlin P, Reid-Smith RJ, Parmley J, Jardine CM.

Zoonoses Public Health. 2016 Jun;63(4):303-10. doi: 10.1111/zph.12232. Epub 2015 Sep 25.


Staphylococcus spp., Streptococcus canis, and Arcanobacterium phocae of healthy Canadian farmed mink and mink with pododermatitis.

Chalmers G, McLean J, Hunter DB, Brash M, Slavic D, Pearl DL, Boerlin P.

Can J Vet Res. 2015 Apr;79(2):129-35.


Multilocus sequence typing and virulence gene profiles associated with Escherichia coli from human and animal sources.

Manges AR, Harel J, Masson L, Edens TJ, Portt A, Reid-Smith RJ, Zhanel GG, Kropinski AM, Boerlin P.

Foodborne Pathog Dis. 2015 Apr;12(4):302-10. doi: 10.1089/fpd.2014.1860. Epub 2015 Mar 16.


Correction for Rehman et al., High-Quality Draft Whole-Genome Sequences of 162 Salmonella enterica subsp. enterica Serovar Enteritidis Strains Isolated from Diverse Sources in Canada.

Rehman MA, Ziebell K, Nash JH, Kropinski AM, Zong Z, Nafziger E, Boerlin P, Chui L, Devenish J, Bekal S, Graham M, Johnson RP.

Genome Announc. 2014 Sep 18;2(5). pii: e01008-14. doi: 10.1128/genomeA.01008-14. No abstract available.


Impact of treatment strategies on cephalosporin and tetracycline resistance gene quantities in the bovine fecal metagenome.

Kanwar N, Scott HM, Norby B, Loneragan GH, Vinasco J, Cottell JL, Chalmers G, Chengappa MM, Bai J, Boerlin P.

Sci Rep. 2014 May 29;4:5100. doi: 10.1038/srep05100.


High-Quality Draft Whole-Genome Sequences of 162 Salmonella enterica subsp. enterica Serovar Enteritidis Strains Isolated from Diverse Sources in Canada.

Rehman MA, Ziebell K, Nash JH, Kropinski AM, Zong Z, Nafziger E, Boerlin P, Chui L, Devenish J, Bekal S, Graham M, Johnson RP.

Genome Announc. 2014 May 1;2(2). pii: e00348-14. doi: 10.1128/genomeA.00348-14. Erratum in: Genome Announc. 2014 Sep 18;2(5):.


Complete Genome Sequences of 16 Canadian Strains of Salmonella enterica subsp. enterica Serovar Enteritidis.

Rehman MA, Ziebell K, Nash JH, Kropinski AM, Ross A, Al-Lami M, Boerlin P, Chui L, Devenish J, Bekal S, Graham M, Amoako KK, Johnson RP.

Genome Announc. 2014 Apr 24;2(2). pii: e00330-14. doi: 10.1128/genomeA.00330-14.


Antimicrobial resistance and antimicrobial use associated with laboratory-confirmed cases of Campylobacter infection in two health units in Ontario.

Deckert AE, Reid-Smith RJ, Tamblyn SE, Morrell L, Seliske P, Jamieson FB, Irwin R, Dewey CE, Boerlin P, McEwen SA.

Can J Infect Dis Med Microbiol. 2013 Spring;24(1):e16-21.


Horizontally transferred genetic elements and their role in pathogenesis of bacterial disease.

Gyles C, Boerlin P.

Vet Pathol. 2014 Mar;51(2):328-40. doi: 10.1177/0300985813511131. Epub 2013 Dec 6. Review.


Effects of ceftiofur and chlortetracycline treatment strategies on antimicrobial susceptibility and on tet(A), tet(B), and bla CMY-2 resistance genes among E. coli isolated from the feces of feedlot cattle.

Kanwar N, Scott HM, Norby B, Loneragan GH, Vinasco J, McGowan M, Cottell JL, Chengappa MM, Bai J, Boerlin P.

PLoS One. 2013 Nov 19;8(11):e80575. doi: 10.1371/journal.pone.0080575. eCollection 2013.


Molecular epidemiology of Campylobacter jejuni human and chicken isolates from two health units.

Deckert AE, Taboada E, Mutschall S, Poljak Z, Reid-Smith RJ, Tamblyn S, Morrell L, Seliske P, Jamieson FB, Irwin R, Dewey CE, Boerlin P, McEwen SA.

Foodborne Pathog Dis. 2014 Feb;11(2):150-5. doi: 10.1089/fpd.2013.1610. Epub 2013 Nov 12.


Genetic diversity of Haemophilus parasuis from sick and healthy pigs.

Boerlin P, Poljak Z, Gallant J, Chalmers G, Nicholson V, Soltes GA, MacInnes JI.

Vet Microbiol. 2013 Dec 27;167(3-4):459-67. doi: 10.1016/j.vetmic.2013.07.028. Epub 2013 Aug 9.


Identification of potentially diarrheagenic atypical enteropathogenic Escherichia coli strains present in Canadian food animals at slaughter and in retail meats.

Comery R, Thanabalasuriar A, Garneau P, Portt A, Boerlin P, Reid-Smith RJ, Harel J, Manges AR, Gruenheid S.

Appl Environ Microbiol. 2013 Jun;79(12):3892-6. doi: 10.1128/AEM.00182-13. Epub 2013 Apr 12.


Comparison of Escherichia coli recovery and antimicrobial resistance in cecal, colon, and fecal samples collected from wild house mice (Mus musculus).

Allen SE, Janecko N, Pearl DL, Boerlin P, Reid-Smith RJ, Jardine CM.

J Wildl Dis. 2013 Apr;49(2):432-6. doi: 10.7589/2012-05-142.


Characterization of bla(SHV) genes on plasmids from Escherichia coli and Salmonella enterica isolates from Canadian food animals (2006-2007).

Pouget JG, Coutinho FJ, Reid-Smith RJ, Boerlin P.

Appl Environ Microbiol. 2013 Jun;79(12):3864-6. doi: 10.1128/AEM.00355-13. Epub 2013 Apr 5.


Identifying associations in Escherichia coli antimicrobial resistance patterns using additive Bayesian networks.

Ludwig A, Berthiaume P, Boerlin P, Gow S, Léger D, Lewis FI.

Prev Vet Med. 2013 May 15;110(1):64-75. doi: 10.1016/j.prevetmed.2013.02.005. Epub 2013 Feb 26.


Burden of illness and factors associated with duration of illness in clinical campylobacteriosis.

Deckert AE, Reid-Smith RJ, Tamblyn S, Morrell L, Seliske P, Jamieson FB, Irwin R, Dewey CE, Boerlin P, McEwen SA.

Epidemiol Infect. 2013 Dec;141(12):2536-46. doi: 10.1017/S0950268813000332. Epub 2013 Mar 8.


Antimicrobial resistance genes in multidrug-resistant Salmonella enterica isolated from animals, retail meats, and humans in the United States and Canada.

Glenn LM, Lindsey RL, Folster JP, Pecic G, Boerlin P, Gilmour MW, Harbottle H, Zhao S, McDermott PF, Fedorka-Cray PJ, Frye JG.

Microb Drug Resist. 2013 Jun;19(3):175-84. doi: 10.1089/mdr.2012.0177. Epub 2013 Jan 25.


Identification of accessory genome regions in poultry Clostridium perfringens isolates carrying the netB plasmid.

Lepp D, Gong J, Songer JG, Boerlin P, Parreira VR, Prescott JF.

J Bacteriol. 2013 Mar;195(6):1152-66. doi: 10.1128/JB.01032-12. Epub 2013 Jan 4.


Occurrence of β-lactamase genes among non-Typhi Salmonella enterica isolated from humans, food animals, and retail meats in the United States and Canada.

Sjölund-Karlsson M, Howie RL, Blickenstaff K, Boerlin P, Ball T, Chalmers G, Duval B, Haro J, Rickert R, Zhao S, Fedorka-Cray PJ, Whichard JM.

Microb Drug Resist. 2013 Jun;19(3):191-7. doi: 10.1089/mdr.2012.0178. Epub 2013 Jan 5.


blaCTX-M-32 on an IncN plasmid in Escherichia coli from beef cattle in the United States.

Cottell JL, Kanwar N, Castillo-Courtade L, Chalmers G, Scott HM, Norby B, Loneragan GH, Boerlin P.

Antimicrob Agents Chemother. 2013 Feb;57(2):1096-7. doi: 10.1128/AAC.01750-12. Epub 2012 Nov 19. No abstract available.


Out-patient antimicrobial drug use in dogs and cats for new disease events from community companion animal practices in Ontario.

Murphy CP, Reid-Smith RJ, Boerlin P, Weese JS, Prescott JF, Janecko N, McEwen SA.

Can Vet J. 2012 Mar;53(3):291-8.


Phenotypic and genetic characterization of antimicrobial resistance in Salmonella serovars isolated from retail meats in Alberta, Canada.

Aslam M, Checkley S, Avery B, Chalmers G, Bohaychuk V, Gensler G, Reid-Smith R, Boerlin P.

Food Microbiol. 2012 Oct;32(1):110-7. doi: 10.1016/ Epub 2012 May 7.


Antimicrobial resistance and resistance genes in Escherichia coli isolated from retail meat purchased in Alberta, Canada.

Sheikh AA, Checkley S, Avery B, Chalmers G, Bohaychuk V, Boerlin P, Reid-Smith R, Aslam M.

Foodborne Pathog Dis. 2012 Jul;9(7):625-31. doi: 10.1089/fpd.2011.1078. Epub 2012 Jun 25.


Bacteriophages with the ability to degrade uropathogenic Escherichia coli biofilms.

Chibeu A, Lingohr EJ, Masson L, Manges A, Harel J, Ackermann HW, Kropinski AM, Boerlin P.

Viruses. 2012 Apr;4(4):471-87. doi: 10.3390/v4040471. Epub 2012 Apr 10.


Antimicrobial resistance in Escherichia coli isolates from raccoons (Procyon lotor) in Southern Ontario, Canada.

Jardine CM, Janecko N, Allan M, Boerlin P, Chalmers G, Kozak G, McEwen SA, Reid-Smith RJ.

Appl Environ Microbiol. 2012 Jun;78(11):3873-9. doi: 10.1128/AEM.00705-12. Epub 2012 Mar 23.


Chicken as reservoir for extraintestinal pathogenic Escherichia coli in humans, Canada.

Bergeron CR, Prussing C, Boerlin P, Daignault D, Dutil L, Reid-Smith RJ, Zhanel GG, Manges AR.

Emerg Infect Dis. 2012 Mar;18(3):415-21. doi: 10.3201/eid1803.111099.

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