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Relatedness of Human and Animal Clostridium difficile PCR Ribotype 078 Isolates Determined on the Basis of Multilocus Variable-Number Tandem-Repeat Analysis and Tetracycline Resistance

JOURNAL OF CLINICAL MICROBIOLOGY (2010)

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JOURNAL OF CLINICAL MICROBIOLOGY

卷 48, 期 10, 页码 3744-3749

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AMER SOC MICROBIOLOGY

DOI: 10.1128/JCM.01171-10

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Microbiology

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Totals of 102 and 56 Clostridium difficile type 078 strains of human and porcine origins, respectively, from four European countries were investigated by an optimized multilocus variable-number tandem-repeat analysis (MLVA) and for tetracycline susceptibility. Eighty-five percent of all isolates were genetically related, irrespective of human or porcine origin. Human strains were significantly more resistant to tetracycline than porcine strains. All tetracycline-resistant strains contained the Tn916-like transposon harboring the tet(M) gene. We conclude that strains from human and porcine origins are genetically related, irrespective of the country of origin. This may reflect a lack of diversity and/or common source.

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