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Three Staphylococcus haemolyticus isolates (1.3%) from 2015 to 2016 were linezolid-resistant. One isolate carried cfr which was plasmid-borne, and together with another isolate which had a G2603T point mutation in the V domain of 23S rRNA gene. Successive exposure to linezolid sub-inhibitory concentrations was selected for three resistant Staphylococcus aureus mutants out of ten susceptible isolates. These mutants were more resistant towards different antibiotic classes than their susceptible parents. Linezolid combinations with imipene

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Background The COVID-19 pandemic has altered organ and tissue donations as well as transplantation practices. SARS-CoV-2 serological tests could help in the selection of donors. We assessed COVID-19 seroprevalence in a population of tissue donors, at the onset of the outbreak in France, before systematic screening of donors for SARS-CoV-2 RNA. Methods 235 tissue donors at the Lille Tissue Bank between November 1, 2019 and March 16, 2020 were included. Archived serum samples were tested for SARS-CoV-2 antibodies using two FDA-approved ki