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The European Committee on Antimicrobial Susceptibility Testing - EUCAST

EUCAST is a scientific committee formed in 1997 and is jointly organized by ESCMID, ECDC and European national breakpoint committees. EUCAST develops antimicrobial susceptibility testing methodology, interpretative criteria and guidance documents to aid clinical decision making when treating infectious diseases. 

Further details about EUCAST and its subcommittees can be found in the sections at the top of the webpage.

Most accessed links

EUCAST News

| Bacteria

Updated versions of the RAST breakpoint tables, the methods and QC documents and the RAST MIC:ZD correlations for all relevant species, including new developed data for S. enterica. 

 

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| General news

In 2026, the EUCAST Steering Committee wish to improve communication with all NACs to create a closer network for education and exchange of information. If your country has an established National…

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| Fungi

The EUCAST AFST have recently published v 8.0 of the routine and extended quality control ranges and targets for MIC determination in yeasts, moulds and dermatophytes, including revised QC ranges for…

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| Fungi

M.C. Arendrup et al. / Clinical Microbiology and Infection 32 (2026) 56—61.
EUCAST guidance on how to interpret EUCAST MICs against C. auris has been released in CMI as open access article.

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| Bacteria

Version 16.0 of the breakpoint tables include new breakpoints for gepotidacin against E. coli, S. saprohyticus and E. faecalis, revised breakpoints for trimethoprim and trimethoprim-sulfamethoxazole…

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| Fungi

A minor error was corrected in in table 1, page 13 of the EDef 10.2 document, the new version (10.3) has been published.

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Copyright statement

Copyright (English): The copyright of all documents, data, presentations and videos published on the EUCAST website remains with EUCAST. All are freely available for re-use if reference to the EUCAST website is given and they are not resold. Any secondary publication of documents, data, presentations and videos must be referenced with the declaration that "These data have (or this document, presentation or video has) been produced in part under ECDC service contracts and made available by EUCAST at no cost to the user and can be accessed on the EUCAST website www.eucast.org. The views and opinions expressed are those of EUCAST at a given point in time. EUCAST recommendations are frequently updated and the latest versions are available at www.eucast.org.

 

Droits d'auteur (Français): Les droits d’auteurs de tous les documents (présentations, vidéo) établis par l’EUCAST et publiés en ligne sur le site de l’EUCAST restent la propriété de l’EUCAST. Ces documents (présentation, vidéo) sont libres d’accès et gratuits.
Ils peuvent être utilisés à condition d’indiquer la référence du site EUCAST ; par contre, il n’est en aucun cas permis de les revendre. Toute publication se référant à ces données doit comporter la mention suivante “ces données ont été produites par l’EUCAST, notamment lors de collaborations avec l’ECDC. Les vues et opinions exprimées sont celles d'EUCAST à un moment donné. Elles sont accessibles librement et gratuitement grâce au site de l’EUCAST www.eucast.org. Les recommandations de l’EUCAST sont fréquemment mises à jour et les dernières versions sont accessibles sur www.eucast.org."

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