First report of IMI-1-producing colistin-resistant Enterobacter clinical isolate in Ireland, March 2013

T W Boo; N O’Connell; L Power; M O’Connor; J King; E McGrath; R Hill; K L Hopkins; N Woodford

doi:10.2807/1560-7917.ES2013.18.31.20548

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First report of IMI-1-producing colistin-resistant Enterobacter clinical isolate in Ireland, March 2013
T W Boo^1,2 , N O’Connell³ , L Power³ , M O’Connor⁴ , J King¹ , E McGrath¹ , R Hill⁵ , K L Hopkins⁵ , N Woodford⁵
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Affiliations: ¹ Department of Medical Microbiology, Galway University Hospitals, HSE West, Ireland ² Discipline of Bacteriology, School of Medicine, National University of Ireland Galway, Ireland ³ Department of Clinical Microbiology, Mid-western Regional Hospital, Limerick, HSE West, Ireland ⁴ Department of Geriatric Medicine, Mid-western Regional Hospital, Limerick, HSE West, Ireland ⁵ Antimicrobial Resistance and Healthcare Associated Infections Reference Unit, PHE Colindale, London, United Kingdom

Correspondence:
T Boo
teck.boo hse.ie
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Citation style for this article: Boo T W, O’Connell N, Power L, O’Connor M, King J, McGrath E, Hill R, Hopkins K L, Woodford N. First report of IMI-1-producing colistin-resistant Enterobacter clinical isolate in Ireland, March 2013. Euro Surveill. 2013;18(31):pii=20548. https://doi.org/10.2807/1560-7917.ES2013.18.31.20548 Received: 02 Jul 2013

Abstract

We report the first case in Ireland of an IMI-1 carbapenemase-producing Enterobacter asburiae, which was resistant to both colistin and fosfomycin. The circumstances under which this isolate was acquired were unclear. Several reports of IMI-producing Enterobacter spp. have emerged in recent years, and colistin resistance in Enterobacteriaceae is also increasingly reported. Laboratories should be aware of the unusual antibiograms of IMI-producing isolates.