Here you can find the latest news and updates from EUCAST.

12 Apr 2022
RAST updated to include incubation beyond 8 hours

EUCAST Rapid AST directly from positive blood culture bottles, previously restricted to 4, 6 or 8 hour incubation, has now been validated for 16 - 20 h incubation with specific reading guidelines and interpretive criteria. This...[more]

12 Apr 2022
Guidance note on topical agents revised

Minor revision of the EUCAST Guidance on topical agents[more]

02 Apr 2022
How to: ECOFFs—the why, the how, and the don'ts of EUCAST epidemiological cutoff values. CMI 2022.

How to: ECOFFs—the why, the how, and the don'ts of EUCAST epidemiological cutoff values Identifying the MIC wild-type distribution and its delineation of species targeted for receiving antimicrobial agent breakpoints is an...[more]

01 Apr 2022
New version of Broth microdilution of moulds (vs. 9.4)

A new version of the Broth microdilution of moulds (version 9.4 to replace 9.3) published 1 April, 2022.[more]

25 Mar 2022
EUCAST abandons the term "intrinsic resistance" in favor of "expected resistant phenotype"

For many years EUCAST and other committees have struggled with the term “intrinsic resistance”. There is no agreed definition and since breakpoints are always “exposure dependent” it is hard to agree on a definition which will...[more]

16 Mar 2022
Cefiderocol disk diffusion with EUCAST criteria - publication in JAC

Cefiderocol: EUCAST criteria for disc diffusion and broth microdilution for antimicrobial susceptibility testing. Link to the JAC article. The reproducibility of cefiderocol MIC determination using broth microdilution (BMD) in...[more]

28 Feb 2022
Temocillin MIC vs. inhibition zone diameters

MIC and zone diameter data on temocillin added to the Enterobacterales calibration/validation file (28 February, 2022). For anyone using EUCAST disk diffusion AST criteria, the calibration/validation files will provide valuable...[more]

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