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

A webinar will be held on 20 January 2026 (12:00-13:00 CET) to highlight any changes in the new breakpoint tables. Members of EUCAST will expand on the changes made to version 16.0 of the breakpoint…

Read more

A EUCAST public consultation is now open detailing two minor changes to version 16.0 of the breakpoint tables. Closing date for comments is 14 December 2025. 

Read more

The new breakpoint tables for bacteria/mycobacteria is now available for public consultation (on correction of formatting issues only). Closing date for comments is 14 December 2025. The breakpoint…

Read more

Contact

Looking for more information? Get in touch with an EUCAST representative today!

Contact form