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Antimicrobial Agents and Chemotherapy, April 2004, p. 1350-1352, Vol. 48, No. 4
0066-4804/04/$08.00+0 DOI: 10.1128/AAC.48.4.1350-1352.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.
Evidence for a Chromosomally Located Third Integron in Salmonella enterica Serovar Typhimurium DT104b
M. Daly,1,2 J. Buckley,3 E. Power,4 and S. Fanning1,5*
Molecular Diagnostics Unit, Cork Institute of Technology, Bishopstown,1
Dairy Products Research Centre, Teagasc, Moorepark, Fermoy,2
Veterinary Department, County Hall,3
Regional Veterinary Laboratory, Department of Agriculture and Food, Cork,4
Centre for Food Safety, University College, Belfield, Dublin 4, Ireland5
Received 29 May 2003/
Returned for modification 29 September 2003/
Accepted 16 December 2003
Salmonella enterica serovar Typhimurium isolates of phage types DT104 and DT104b are frequently associated with multiple antimicrobial resistance. We describe the characterization of a class 1 integron containing dfrA1 and aadA1, genes from two Salmonella serovar Typhimurium DT104b isolates. Genetic mapping located the integron to the bacterial chromosome in each case.
* Corresponding author. Mailing address: Centre for Food Safety, University College, Belfield, Dublin 4, Ireland. Phone: (353-1) 716 6082. Fax: (353-1) 716 7091. E-mail:
sfanning{at}ucd.ie.
Antimicrobial Agents and Chemotherapy, April 2004, p. 1350-1352, Vol. 48, No. 4
0066-4804/04/$08.00+0 DOI: 10.1128/AAC.48.4.1350-1352.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.
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