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3%) patients), but no statistical significance was reached (p?0.13). Respective MIC50 and MIC90 values were 1?mg/L and 2?mg/L for vancomycin, 2?mg/L and 2?mg/L for linezolid, 0.25?mg/L and 0.5?mg/L for tigecycline, 4?mg/L and 16?mg/L for fosfomycin (Table?2). All isolates were susceptible to linezolid and tigecycline and five (4%) were resistant to fosfomycin. Resistance to vancomycin (MIC >2?mg/L) was detected in 0.8%, reduced susceptibility to vancomycin (MIC?=?2?mg/L) was found in 27.4% of MRSA bloodstream isolates. Of 124 patients, 27 (21.8%) had previously received antibiotic pretreatment with a glycopeptide intravenously. MRSA bloodstream isolates of these pretreated patients had significantly higher MIC of vancomycin (p?0.001): Tariquidar 3 of 19 patients, vancomycin MIC 0.5?mg/L; 10 of 70 patients, vancomycin MIC 1?mg/L; 13 of 34 patients, MIC of 2?mg/L; and one of one patient, MIC 4?mg/L. The 28-day mortality in the study population was 30.6% and death could be related to MRSA bacteraemia in 23.4%. The crude mortality rate increased to 41.9% in the first half-year after MRSA bacteraemia and reached 45.2% after the first year (Fig.?1). Increasing age, solid organ transplantation, pneumonia and failure to use an antimicrobial active against MRSA showed significant influence on early mortality within the first 28?days in the univariate Cox regression analyses (p?this website statistically significant: higher patient age (aHR 1.03, 95% CI 1.01�C1.06, p?0.006), pneumonia as site of infection (aHR 3.86, 95% CI 1.83�C8.12, p?PRDX5 developed persistent MRSA bacteraemia ��7?days. Two positive predictors for microbiological eradication failure (p?