The 28th EURL-AR Proficiency Test Escherichia coli, Salmonella and Campylobacter 2020

This report describes and summarizes results of the 28th proficiency test conducted by the National Food Institute (DTU Food) as the EU Reference Laboratory for Antimicrobial Resistance (EURL-AR). This proficiency test focuses on antimicrobial susceptibility testing (AST) of Escherichia coli, Salmonella and Campylobacter. For E. coli this is the 13th whereas for Salmonella and Campylobacter it is the 14th External Quality Assurance System (EQAS) conducted for these microorganisms. The proficiency test includes categorisation of the relevant E. coli and Salmonella strains as ESBL-, AmpC- and carbapenemasephenotypes, and identification of the Campylobacter species as either C. jejuni or C. coli.