Worldwide distribution of NDM-positive strains of the Enterobacteriaceae. Countries (Egypt, India, Pakistan, Serbia, and UAE) with evidence showing a prevalence of NDM-positive strains among the Enterobacteriaceae of ≥5% are indicated in red, while countries with reports of NDM-positive strains but without evidence of a ≥5% prevalence are shown in light brown. Countries without reports or data on NDM-positive strains are indicated in white.