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Linezolid for the treatment of complicated skin and skin structure infections in children

Background. Gram-positive pathogens are a major cause of complicated skin and skin structure infections (CSSSIs) in children. Many pathogens are developing decreased susceptibility to currently used antibiotics, increasing the need for new therapies. Linezolid is well-tolerated and effective in the treatment of these infections in adults. Objective. To evaluate the clinical efficacy and safety of iv/oral linezolid and iv vancomycin in children with Gram-positive CSSSIs. Methods. Hospitalized children <12 years of age were randomized (2:1 ratio) to receive either linezolid 10 mg/kg iv every 8 h (with the option to change treatment to oral linezolid suspension 10 mg/kg every 8 h) or iv vancomycin 10 to 15 mg/kg every 6 to 24 h (according to age). Clinical response, tolerance and safety were evaluated at follow-up. The results of a subset analysis of patients with CSSSIs are presented here. Results. One hundred twenty intent-to-treat patients (linezolid 80, vancomycin 40) with CSSSI were included in this analysis. Clinical cure rates for clinically evaluable patients with CSSSI did not differ between treatment groups (linezolid, 93.2%vs. vancomycin, 90.0%; P = 0.594). Significantly fewer linezolid-treated patients experienced drug-related adverse events than did vancomycin-treated patients (23%vs. 48%; P = 0.006). The percentages of patients with laboratory abnormalities, including selected hematologic parameters, were generally low and similar between the treatment groups. Conclusions. Linezolid given iv or orally was well-tolerated and safe. It was as effective as vancomycin in treating children with Gram-positive CSSSIs.