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Infect Dis Ther


INTRODUCTION: Acute bacterial skin and skin structure infections (ABSSSIs) remain among the most common infectious processes seen in the clinical setting. For patients with complicated ABSSSIs deemed to require intravenous antibiotics, vancomycin remains the mainstay therapy. Ceftaroline has been shown to be non-inferior to vancomycin and may result in faster resolution of signs of infection.

METHODS: Multicenter, prospective, open-label, randomized trial of ceftaroline versus vancomycin for the treatment of adult patients admitted for management of ABSSSIs from April 2012 to May 2016; 166 patients in the clinically evaluable (CE) group were needed to determine a 20% difference in primary outcome of clinical response at day 2 or 3 of antibiotics. Clinical response was defined as cessation of spread of lesion and improvement in systemic signs/symptoms of infection. A secondary outcome was a ≥ 20% reduction in lesion size at day 2 or 3 of antibiotics.

RESULTS: One hundred seventy-four patients were enrolled in the intention-to-treat (ITT) group and 108 were CE. Among CE patients, 54 were randomized to ceftaroline and 54 to vancomycin. Baseline characteristics were similar except patients in the ceftaroline arm were older and had a non-significantly higher degree of comorbidities (median Charlson score 2 vs. 4, respectively). Cellulitis was the most common type of ABSSSI (85.2% vs. 79.6%, respectively). Rapid diagnostic testing of available cultures (n = 55) demonstrated high agreement with clinical microbiology for identification of Staphylococcus aureus (100%) and MRSA (100%). There was no significant difference in primary outcome of day 2 or 3 clinical response (50.0% vs. 51.9%).

CONCLUSION: Early clinical response between vancomycin- and ceftaroline-treated ABSSSIs was similar. Patients with ABSSSIs rarely remained hospitalized for > 2-3 days, thus limiting our ability to critically assess clinical outcomes.

TRIAL REGISTRATION: identifier, NCT02582203.

FUNDING: Allergan plc.

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ePub ahead of print