We analyzed the replicon types, sizes, and restriction fragment length polymorphism (RFLP) typing of plasmids carrying extended-spectrum β-lactamase (ESBL) genes in Klebsiella pneumoniae isolates from Taiwan. Fifty-one Escherichia coli transconjugant strains with plasmids from ESBL-producing K. pneumoniae from the Taiwan Surveillance of Antimicrobial Resistance III Program in 2002 were included.
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