Rapid communications Outbreak of NDM-1-producing Enterobacteriaceae in

Abstract

metallo-beta-lactamase 1 (NDM-1) gene was detected in Klebsiella pneumoniae and Escherichia coli isolates obtained from six patients hospitalised in four healthcare facilities in northern Italy. The patient who had been hospitalised in New Delhi, India, from February to May 2011 and subsequently in the Bologna area, Italy, from May to July 2011, may have been the source of the outbreak. Our findings suggest ongoing spread of this carbapenem-resistance gene in Italy and highlight the need for intensive surveillance. Outbreak description On 2 July 2011, we isolated Klebsiella pneumoniae harbouring the New Delhi metallo-beta-lactamase gene (bla), cultured from the urine of a patient (Patient ND