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Quantification, Viability Assessment, and Visualization Strategies for Acinetobacter Biofilms
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Quantification, Viability Assessment, and Visualization Strategies for Acinetobacter Biofilms

Published on: August 4, 2023

The effect of terminal cleaning on environmental contamination rates of multidrug-resistant Acinetobacter baumannii

Paula Strassle1, Kerri A Thom, J Kristie Johnson

  • 1Department of Epidemiology and Public Health, University of Maryland, Baltimore School of Medicine, Baltimore, MD 21201, USA.

American Journal of Infection Control
|December 4, 2012
PubMed

Insights

Environmental cleaning significantly reduced multidrug-resistant Acinetobacter baumannii contamination in hospital rooms. However, persistent contamination after cleaning highlights ongoing transmission risks, necessitating further research into effective disinfection strategies.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Hospital Epidemiology

Background:

  • Multidrug-resistant Acinetobacter baumannii (MDRAB) poses a significant threat in healthcare settings.
  • Environmental contamination is a key factor in the transmission of MDRAB.

Purpose of the Study:

  • To assess the prevalence of MDRAB environmental contamination before and after standard discharge cleaning.
  • To determine the effectiveness of current cleaning protocols in reducing MDRAB presence.

Main Methods:

  • Environmental sampling of rooms and high-touch sites from patients with A. baumannii infections/colonization.
  • Quantitative analysis of bacterial load pre- and post-cleaning procedures.

Main Results:

  • Pre-cleaning: 46.9% of rooms and 15.3% of sites were contaminated.
  • Post-cleaning: 25% of rooms and 5.5% of sites remained contaminated.
  • Cleaning significantly reduced, but did not eliminate, MDRAB environmental contamination.

Conclusions:

  • Standard discharge cleaning protocols are partially effective against MDRAB environmental contamination.
  • Persistent contamination indicates a continued risk for patient-to-patient transmission.
  • Development and evaluation of enhanced cleaning methods are crucial for infection control.

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