Isolation of Genetically Unrelated bla NDM-1 -Positive Providencia rettgeri Strains in Israel

The emergence of the novel carbapenem resistance mechanism New Delhi metallo-β-lactamase ( bla NDM-1) in Enterobacteriaceae has presented a new challenge to health care providers on how to deal with infected or colonized patients. In most cases, the bla NDM-1 gene is borne on large plasmids;