Emergence of <i>Klebsiella variicola</i> positive for NDM-9, a variant of New Delhi metallo-β-lactamase, in an urban river in South Korea

Abstract

The findings of the present study provide us with the information that NDM-9 has been spreading into the environment. Dissemination of NDM-9 in the environment has raised a health risk alarm as this variant of NDM carries MDR genes with highly transferable mobile genetic elements, increasing the possibility of resistance gene transfer among microorganisms in the environment.