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Clin Infect Dis. 2004 Jun 15;38(12):1682-7. Epub 2004 May 24.

Molecular epidemiology of gram-negative bacilli from infected neonates and health care workers' hands in neonatal intensive care units.

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1
Department of Pediatrics, Columbia University, New York, New York 10032, USA.

Abstract

We sought to characterize the molecular epidemiology of gram-negative bacilli (GNB) causing infections in infants and associated with carriage on nurses' hands after hand hygiene was performed. From March 2001 to January 2003, GNB caused 192 (34%) of 562 hospital-acquired infections in the 2 participating neonatal intensive care units (NICUs) and were isolated from the hands of 45 (38%) of 119 nurses. Five species--Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa, Serratia marcescens and Enterobacter cloacae, all of which were typed by pulsed-field gel electrophoresis--caused 169 (88%) of 192 of GNB infections. Overall, 58% of infections were caused by unique strains not cultured from other infants or nurses, and 31% of infections were part of unrecognized molecular clusters. In contrast, only 9% of strains that caused infections were cultured from nurses' hands. These data suggest that practices in addition to hand hygiene are needed to prevent horizontal transmission of GNB in the NICU.

PMID:
15227612
DOI:
10.1086/386331
[Indexed for MEDLINE]
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