1887

Abstract

This study was designed to determine the genetic basis of florfenicol andceftiofur resistance in isolates recovered fromFrench cattle. In these isolates, ceftiofur resistance was conferred by located on three distinct conjugative plasmids ona specific DNA fragment, IS --. Two of the plasmids also carried the gene conferringresistance to florfenicol. The gene was shown to be associatedwith the insertion sequence IS. Mobile elements appear to contributeto the mobilization of and genesin . The presence of and on the same plasmid highlights the potential risk for a co-selectionof the gene through the use of florfenicol infood animal production.

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2010-04-01
2024-04-18
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