Effect of Meropenem Concentration on the Detection of Low Numbers of Carbapenem-Resistant Enterobacteriaceae

The nosocomial spread of carbapenem-resistant Enterobacteriaceae (CRE) is a serious concern for health care facilities ([1][1], [2][2]), and environmental sources are being increasingly implicated ([3][3][–][4][6][5]). Carbapenems can be used to select for CRE in environmental testing, but