Background: Vancomycin-variable-enterococci (VVE) are vanA+ enterococci expressing a vancomycin-susceptible phenotype that can revert to a resistant phenotype (VRE) after vancomycin exposure. Objective: We aimed to screen and characterize VVE in a large collection of Enterococcus faecium (Efm) [1]. Methods: We performed a vanA-PCR screening on an extensive Efm collection (2009-2022), including hospital (n=255) ...