Bacterial strains used were clinical isolates of MSSA (n = 100) and MRSA (n = 100) isolated from St George’s Hospital, London. These isolates were collected from blood cultures, tissue fluid, or routine screening on skin of the patients in the South West London area. Most of these strains were isolated from bacteremia. Some were isolated as organ or skin colonization. Genotyping of these strains were performed previously (Hu et al., 2015 (link)). The isolates were grown in nutrient broth (Oxoid) or on trypticase soy agar (Oxoid) plates.
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