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Related Concept Videos

Development of Antibiotic Resistance01:30

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Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
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The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
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Exploring variability in antibiograms: a cross-sectional study.

Valerie Leung1,2, Marwah Alameri3, Huda Almohri4

  • 1Communicable Disease Control, Public Health Ontario, Toronto, ON, Canada.

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|June 16, 2025
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Summary
This summary is machine-generated.

Antibiogram formatting varies significantly across Ontario hospitals, hindering antimicrobial resistance (AMR) monitoring and clinical decisions. Standardization is needed to improve the use of these crucial antimicrobial prescribing tools.

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Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Health Services Research

Background:

  • Antibiograms are vital for guiding antimicrobial prescribing and tracking antimicrobial resistance (AMR).
  • Challenges in antibiogram implementation and interpretation exist, potentially due to variable data formatting.
  • This study addresses the need for improved antibiogram utility by examining presentation variability.

Purpose of the Study:

  • To explore variability in antibiogram data presentation across Ontario hospitals.
  • To identify opportunities for improving antibiogram formatting and standardization.
  • To enhance the practical application of antibiograms in clinical decision-making and AMR surveillance.

Main Methods:

  • Visual inspection of 43 antibiograms from 60 Ontario hospitals.
  • Evaluation of general formatting, organism data presentation, and stratification based on CLSI M39 guidelines.
  • Descriptive analysis of antibiograms categorized by hospital type.

Main Results:

  • Significant variability was observed in antibiogram data presentation.
  • Only 18.6% of antibiograms included guidance on their use, and 27.9% mentioned duplicate exclusion.
  • Stratification methods were used in nearly half of antibiograms, with specimen source being most common.

Conclusions:

  • Substantial variability in antibiogram data presentation exists among Ontario hospitals.
  • Standardizing antibiogram formats can improve their utility for clinical decision-making.
  • Improved standardization is crucial for effective antimicrobial resistance trend monitoring.