Environmental contamination because of multidrug-resistant Acinetobacter baumannii surrounding colonized or infected patients
- PMID: 22041290
- PMCID: PMC3206296
- DOI: 10.1016/j.ajic.2010.09.005
Environmental contamination because of multidrug-resistant Acinetobacter baumannii surrounding colonized or infected patients
Abstract
Background: Multidrug-resistant (MDR) Acinetobacter baumannii (MDR-AB) is an important nosocomial pathogen associated with significant morbidity and mortality.
Methods: We conducted a prospective cohort study of intensive care unit patients colonized or infected with MDR-AB at a tertiary care hospital from October 2008 to January 2009. For each patient, 10 surfaces in the patient room were sampled and evaluated for the presence of A baumannii. Pulsed-field gel electrophoresis was performed on all environmental isolates and a clinical isolate if available.
Results: Fifty rooms were sampled; 48% (24/50) were positive at 1 or more environmental sites. Supply carts (10/50, 20%), floors (8/50, 16%), infusion pumps (7/50, 14%), and ventilator touch pads (5/44, 11.4%) were most commonly contaminated. Patients with a recent history of MDR-AB were no more likely to contaminate their environment than patients with a remote history (51% vs 36%, respectively, P value = .50). In 85% (17/20) of cases, the environmental isolate was classified as genetically similar to the patient isolate.
Conclusion: For patients with MDR-AB, the surrounding environment is frequently contaminated, even among patients with a remote history of MDR-AB. Surfaces often touched by health care workers during routine patient care are commonly contaminated and may be a source of nosocomial spread.
Copyright © 2011 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Mosby, Inc. All rights reserved.
Conflict of interest statement
No Authors have a Conflict of Interest
References
-
- Gaynes R, Edwards JR. Overview of nosocomial infections caused by gram-negative bacilli. Clin Infect Dis. 2005 Sep 15;41(6):848–854. - PubMed
-
- Lee NY, Lee HC, Ko NY, et al. Clinical and economic impact of multidrug resistance in nosocomial Acinetobacter baumannii bacteremia. Infect Control Hosp Epidemiol. 2007 Jun;28(6):713–719. - PubMed
-
- Villegas MV, Hartstein AI. Acinetobacter outbreaks, 1977–2000. Infect Control Hosp Epidemiol. 2003 Apr;24(4):284–295. - PubMed
-
- Dancer SJ. The role of environmental cleaning in the control of hospital-acquired infection. J Hosp Infect. 2009 Dec;73(4):378–385. - PubMed