EUCAST News
Here you can find the latest news and updates from EUCAST.
Colistin gradient tests and disks have no place in susceptibility testing
For many years EUCAST has warnedusers that colistin disk diffusion and gradient tests (EtestTM from bioMerieuxand MTSTM from Liofilchem) fail to predict colistin resistance in all relevant bacteria. bioMerieux has...[more]
Streptococcus pneumoniae and benzylpenicillin susceptibility testing.
We are frequently asked questions regarding (1) EUCAST Warning No. 7: is this warning specifically directed at benzylpenicillin gradient tests (EtestTM, bioMérieux, and MTSTM, Liofilchem) when used for Streptococcus pneumoniae or...[more]
Guidance on cephalosporins for Staphylococcus aureus infections
Updated guidance on the use of and dosing of cephalosporins for S. aureus infections. Various cephalosporins have been used for many years for treatment of a variety of infections caused by MSSA. The third-generation...[more]
Reference MIC testing of M.tuberculosis released
The EUCAST AMST reference method for M. tuberculosis MIC determination has now been released in the Mycobacteria methods section. A summary is below: A 96-well U-bottom-shaped polystyrene microtiter plate with an untreated...[more]
Company Rationale Document template revised
Companies are requested to complete a "company rationale document" to aid the EUCAST process of setting breakpoints for new agents. A template has been available for many years. It is now revised. [more]
ECOFFinder software removed from the EUCAST website
ECOFFinder.The previously available ECOFFinder software is no longer accessible on the EUCAST website because, according to EUCAST procedures (SOP10.2), setting ECOFFs or TECOFFs on single or already aggregated...[more]
SOP 11 updated
The SOP 11 has been updated to SOP 11.1 on 21 January, 2025. The SOP describes the selection of optimal disk content (potency) as performed by the joint EUCAST and CLSI working group. [more]
