Clinical efficacy of moxifloxacin versus comparator therapies for community-acquired pneumonia caused by Legionella spp
Abstract
The aim of this study was to compare outcomes for patients with community-acquired pneumonia (CAP) caused by Legionella spp. following treatment with moxifloxacin or a range of comparator antimicrobial agents. Data were pooled from four sequential I.V./P.O. trials of moxifloxacin in the treatment of CAP. Comparators were ceftriaxone +/- erythromycin, amoxicillin/clavulanate +/- clarithromycin, trovafloxacin, levofloxacin, or ceftriaxone + levofloxacin. Legionella infection was diagnosed by culture, urine antigen testing and/or serology. Clinical success rates for the efficacy-valid (per protocol) populations were recorded at the test-of-cure visit (5-30 days post-therapy). Severity of CAP was determined using the modified American Thoracic Society criteria.Of 1786 efficacy-valid patients, 33 (1.8%) had documented infection with Legionella spp. (moxifloxacin: n=13; comparator: n=20). Of these, 30 cases were identified by serology and/or urine antigen detection and 3 by respiratory culture. The success rate of moxifloxacin vs. comparator therapy was 92.3% vs. 80.0% for the I.V./P.O. trials.Sequential (I.V./P.O.) moxifloxacin demonstrated clinical efficacy that was at least as good as that of comparator treatments for the treatment of CAP due to Legionella.
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