Clinical specimens were grown aseptically on Columbia blood agar base supplemented with 5% of defibrinated sheep blood (Oxoid), chocolate blood agar (GC II agar with IsoVitaleX, BD) and MacConkey agar (Biolife). All plates were incubated at 35–37 °C in aerobic conditions with 5–10% CO2 for 24–48 h. Identification of isolates was carried out by matrix assisted laser desorption ionization-time of flight (MALDI-TOF) mass espectrometry (Biotyper System, Bruker Daltonics, Bremen, Germany) as previously described [24 (link)].
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