How to detect NDM-1 producers

Nordmann, Patrice, Poirel, Laurent, Carrer, Amelie, Toleman, Mark Alexander Howard ORCID: https://orcid.org/0000-0002-9497-0512 and Walsh, Timothy Rutland ORCID: https://orcid.org/0000-0003-4315-4096 2010. How to detect NDM-1 producers. Journal of Clinical Microbiology 49 (2) , pp. 718-721. 10.1128/JCM.01773-10

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Abstract

Enterobacterial isolates expressing the carbapenemase NDM-1 are emerging worldwide. Twenty-seven NDM-1-positive isolates of worldwide origin were included in this study to identify these strains as not only pathogens but also colonizers of normal flora for infection control screening. Although susceptibility to carbapenems varied, a combined test (IMP/IMP + EDTA), the Etest MBL, and automated susceptibility testing by Vitek2 (bioMérieux) identified those NDM-1 producers as verified by PCR using specific primers. Screening for carriers of NDM-1 producers may be based on media such as the ChromID ESBL culture medium routinely used to screen for extended-spectrum β-lactamase producers, which gives excellent detection levels with low limits of detection ranging from 8 × 100 to 5 × 102 CFU/ml. The CHROMagar KPC culture medium had higher limits of detection (1 × 101 to 5 × 105 CFU/ml) and may be proposed for the follow-up of outbreaks of infections with NDM-1 producers. Colonies growing on these screening media can be verified as NDM-1 producers with molecular methods as described herein.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine Systems Immunity Research Institute (SIURI)
Subjects:	Q Science > QR Microbiology
Additional Information:	Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0095-1137/ (accessed 25/02/2014)
Publisher:	American Society for Microbiology
ISSN:	0095-1137
Date of First Compliant Deposit:	30 March 2016
Last Modified:	10 May 2023 18:41
URI:	https://orca.cardiff.ac.uk/id/eprint/27427

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