In Vitro Susceptibility of Coxiella burnetii to Trovafloxacin in Comparison with Susceptibilities to Pefloxacin, Ciprofloxacin, Ofloxacin, Doxycycline, and Clarithromycin

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Abstract
The antibiotic susceptibilities of eight Greek isolates of Coxiella burnetii to trovafloxacin were determined by the shell vial assay. MICs of trovafloxacin and ofloxacin ranged from 1 to 2 μg/ml, those of pefloxacin ranged from 1 to 4 μg/ml, those of ciprofloxacin ranged from 4 to 8 μg/ml, those of doxycycline ranged from 1 to 2 μg/ml, and those of clarithromycin ranged from 2 to 4 μg/ml. Trovafloxacin exhibited no activity against C. burnetii at 4 μg/ml.