Antimicrobial resistant <i>Escherichia coli</i> isolates containing class 1 integrons with an <i>aadA1</i> cassette as the only inserted gene cassette.

The isolates were recovered from humans with blood stream infections. aTransferability of plasmids with class 1 integron by conjugation; + = transconjugants were obtained, ÷ = no transconjugantes were obtained bPBRT = Plasmid-based replicontyping (plasmid replicon(s) in transconjugant) cSubtyping of conjugative incF plasmid with class 1 integron ut = unique type, one isolate with this banding pattern was found Antimicrobial resistant Escherichia coli isolates containing class 1 integrons with an aadA1 cassette as the only inserted gene cassette.