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Antimicrobial Agents and Chemotherapy, April 2009, p. 1709-1711, Vol. 53, No. 4
0066-4804/09/$08.00+0     doi:10.1128/AAC.01014-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Transmission of IncN Plasmids Carrying blaCTX-M-1 between Commensal Escherichia coli in Pigs and Farm Workers{triangledown} ,{dagger}

Arshnee Moodley* and Luca Guardabassi

Department of Veterinary Pathobiology, Faculty of Life Sciences, University of Copenhagen, Frederiksberg C, Denmark

Received 29 July 2008/ Returned for modification 1 November 2008/ Accepted 25 January 2009

CTX-M-1-producing Escherichia coli were isolated from 56 pigs, three farm personnel, two manure samples, and two air samples from two Danish pig farms where an association between prophylactic ceftiofur use and the occurrence of cephalosporin resistance was previously demonstrated. Human, animal, and environmental strains displayed high genetic diversity but harbored indistinguishable or closely related IncN plasmids carrying blaCTX-M-1, indicating that IncN plasmids mediating cephalosporin resistance were transmitted between pigs and farm workers across multiple E. coli lineages.

* Corresponding author. Mailing address: Department of Veterinary Pathobiology, Stigbøjlen 4, Frederiksberg C 1870, Denmark. Phone: 45 35332725. Fax: 45 35332757. E-mail: asm{at}life.ku.dk

{triangledown} Published ahead of print on 2 February 2009.

{dagger} Supplemental material for this article may be found at http://aac.asm.org/.

Antimicrobial Agents and Chemotherapy, April 2009, p. 1709-1711, Vol. 53, No. 4
0066-4804/09/$08.00+0     doi:10.1128/AAC.01014-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Carattoli, A. (2009). Resistance Plasmid Families in Enterobacteriaceae. Antimicrob. Agents Chemother. 53: 2227-2238 [Full Text]  


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