Fourth external quality assessment on antimicrobial susceptibility testing and detection of ESBL‐, acquired AmpC-, and carbapenemase‐production of Salmonella, 2018

This report presents the results of the fourth round of the EQA on AST for national public health laboratories on Salmonella (hereafter Salmonella EQA4-AST) within the Food- and Waterborne Diseases and Zoonoses Network (FWD-Net). The objectives of the EQA were to:
• determine the accuracy of quantitative AST results reported by participants;
• identify common laboratory problems related to the guidance in the EU protocol; and
• assess the overall comparability of routinely collected AST data from National Public Health Reference Laboratories across Europe.