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Hospital Reservoirs of Multidrug Resistant Acinetobacter Species-The Elephant in the Room!

S Fahy1,2, J A O'Connor2, B Lucey2

  • 1Department of Clinical Microbiology, Mercy University Hospital, Cork, Ireland.

British Journal of Biomedical Science
|April 6, 2023
PubMed

Insights

Environmental contamination causes hospital infections. Acinetobacter baumannii, a multidrug-resistant pathogen, can indicate decontamination effectiveness and aid environmental screening to control resistance spread.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Environmental Health

Background:

  • Environmental contamination contributes significantly to hospital-acquired infections (up to 20%).
  • Acinetobacter baumannii is a prevalent opportunistic pathogen causing severe infections, especially in immunocompromised patients.
  • This pathogen exhibits biofilm formation, multi-drug resistance, and mobile genetic element transfer capabilities.

Purpose of the Study:

  • To highlight the utility of Acinetobacter baumannii as an indicator organism for evaluating decontamination efficacy.
  • To emphasize the need for scientifically based environmental screening and microbiological decontamination to combat antimicrobial resistance.

Main Methods:

  • Review of existing literature on Acinetobacter baumannii and environmental contamination in healthcare settings.
  • Analysis of the clinical and financial impact of multidrug-resistant organisms, specifically carbapenem-resistant Acinetobacter baumannii.
  • Assessment of Acinetobacter baumannii's characteristics as an indicator for decontamination effectiveness.

Main Results:

  • Acinetobacter baumannii's properties (biofilm formation, MDR, genetic transfer) make it a suitable indicator organism.
  • Multidrug-resistant Acinetobacter baumannii poses significant financial and clinical burdens.
  • Current decontamination strategies may be insufficient to control the spread of resistant pathogens.

Conclusions:

  • Acinetobacter baumannii serves as a valuable indicator for assessing environmental hygiene and decontamination protocols.
  • There is an urgent need to implement scientifically validated environmental screening and decontamination methods.
  • Proactive control measures are essential to mitigate the spread of antimicrobial resistance, especially with limited new antimicrobial development.
Keywords:
Acinetobacterenvironmental screeningindicator organismmicrobiological decontaminationmulti-drug resistance

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