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Antimicrobial Agents and Chemotherapy, June 2003, p. 2006-2008, Vol. 47, No. 6
0066-4804/03/$08.00+0 DOI: 10.1128/AAC.47.6.2006-2008.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
Salmonella enterica Serovar Typhi Strains Isolated in Korea Containing a Multidrug Resistance Class 1 Integron
Hyunjoo Pai,1* Jeong-hum Byeon,1 Sunmi Yu,2 Bok Kwon Lee,3 and Shukho Kim3
Division of Infectious Disease, College of Medicine, Hanyang University,1
Laboratory of Enteric Infections, Korean National Institute of Health, Seoul,3
Department of Family Medicine, College of Medicine, Dankook University ChoanRepublic of Korea2
Received 5 November 2002/
Returned for modification 18 January 2003/
Accepted 16 March 2003
Six strains of Salmonella enterica serovar Typhi which were resistant to ampicillin, chloramphenicol, trimethoprim-sulfamethoxazole, streptomycin, tetracycline, and gentamicin were isolated in Korea. This multidrug resistance was transferred by a conjugative plasmid of about 50 kb. The plasmid harbored a class 1 integron, which included six resistance genes, aacA4b, catB8, aadA1, dfrA1, aac(6')-IIa, and the novel blaP2, in that order. All of the isolates showed the same-size plasmids and the same ribotyping patterns, which suggests a clonal spread of these multidrug-resistant isolates.
* Corresponding author. Mailing address: Division of Infectious Disease, College of Medicine, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea. Phone: 82-2-2290-8356. Fax: 82-2-2298-9183. E-mail:
paihj{at}unitel.co.kr.
Antimicrobial Agents and Chemotherapy, June 2003, p. 2006-2008, Vol. 47, No. 6
0066-4804/03/$08.00+0 DOI: 10.1128/AAC.47.6.2006-2008.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
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