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Antimicrobial Agents and Chemotherapy, September 2009, p. 4019-4021, Vol. 53, No. 9
0066-4804/09/$08.00+0     doi:10.1128/AAC.00294-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Characterization of the Plasmid-Borne Quinolone Resistance Gene qnrB19 in Salmonella enterica Serovar Typhimurium{triangledown}

Anna Maria Dionisi, Claudia Lucarelli, Slawomir Owczarek, Ida Luzzi, and Laura Villa*

Istituto Superiore di Sanità, Department of Infectious, Parasitic and Immuno-Mediated Diseases, Viale Regina Elena 299, 00161 Rome, Italy

Received 4 March 2009/ Returned for modification 8 May 2009/ Accepted 9 June 2009

A qnrB19 gene variant, carried by an IncL/M-like plasmid, was detected in a multidrug Salmonella enterica serovar Typhimurium human strain with reduced susceptibility to ciprofloxacin. The genetic environment around the gene was fully sequenced (20 kb). A large gene cluster, containing the aph, qnrB19, and blaSHV-12-like resistance genes, is inserted inside a Tn3 transposon.

* Corresponding author. Mailing address: Istituto Superiore di Sanità, Department of Infectious, Parasitic and Immuno-Mediated Diseases, Viale Regina Elena 299, 00161 Rome, Italy. Phone: 39-0649902171. Fax: 39-0649387112. E-mail: villa{at}iss.it

{triangledown} Published ahead of print on 15 June 2009.

Antimicrobial Agents and Chemotherapy, September 2009, p. 4019-4021, Vol. 53, No. 9
0066-4804/09/$08.00+0     doi:10.1128/AAC.00294-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.





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