Bacteria

Most of EUCAST’s work is dedicated to defining breakpoints for bacteria that cause infections in humans.

How to Use This Section:

This page gives you access to information and services related to pathogenic bacteria.
Important: All resources here are complementary. Please review them together before releasing any laboratory report.

What You’ll Find:

  • Breakpoint Tables – clear instructions on testing and interpretation.
  • Guidance Documents – answers to more complex or exceptional questions.
  • Expected Phenotypes and Expert Rules – tools to validate laboratory results and provide reliable advice for antibiotic therapy.

News

| Bacteria

The table proposes dosages which are commonly used in paediatric patients. These dosages are presented in relation to the use of EUCAST breakpoints. Deadline for comments is 27 November 2026.

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A new document clarifying the EUCAST recommendations for MIC determination of aerobic and facultative anaerobic bacterial species with broth microdilution has been published.  This document describes…

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This 2nd public consultation addresses comments made during the first consultation on the same topic.

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