The carbapenem resistance gene bla<sub>OXA-23</sub> is disseminated by a conjugative plasmid containing the novel transposon Tn6681 in Acinetobacter johnsonii M19
CONCLUSIONS: Our investigation showed that A. johnsonii M19 is a source and disseminator of bla(OXA-23) and carbapenem resistance. The ability to transfer bla(OXA-23) to other species by the conjugative plasmid pFM-M19 raises the risk of spread of carbapenem resistance. The carbapenem resistance gene bla(OXA-23) is disseminated by a conjugative plasmid containing the novel transposon Tn6681 in Acinetobacter johnsonii M19.