Infection Risk Associated With Colonization by Multidrug-Resistant Gram-Negative Bacteria: An Umbrella Review and Meta-analysis - Summary - MDSpire

Infection Risk Associated With Colonization by Multidrug-Resistant Gram-Negative Bacteria: An Umbrella Review and Meta-analysis

  • By

  • Edwin Wilbur Woodhouse

  • Majd Alsoubani

  • David J Roach

  • David B Flynn

  • Michael LaValley

  • Kristen Sheridan

  • David C Hooper

  • Vance G Fowler

  • Erin M Duffy

  • Trudy H Grossman

  • July 2, 2025

  • 0 min

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Objective:

To assess the quality of evidence and estimate the rate of infection following colonization with specific multidrug-resistant gram-negative bacteria, including ESBL-E and CRE.

Key Findings:
  • The pooled incidence of infection following colonization was 22% for both ESBL-E and CRE, indicating a significant public health concern.
  • Few reviews provided high-quality findings on mortality or transmission related to colonization, highlighting a gap in the literature.
  • Limited data were available for MDR Pseudomonas aeruginosa and carbapenem-resistant Acinetobacter baumannii, suggesting a need for further research.
Interpretation:

The findings indicate a significant rate of infection following colonization with MDR-GNB, underscoring the need for improved patient counseling and innovative decolonization strategies to mitigate risks.

Limitations:
  • Heterogeneity of included populations may limit generalizability.
  • Few high-quality studies on mortality and transmission were available, and potential biases in the included studies may affect the results.
Conclusion:

The study underscores the substantial infection risk associated with MDR-GNB colonization, which can inform clinical practices and future research.

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