This is a randomized, double-blind, levofloxacin controlled, parallel group, multicentre, international, prospective study. The patients will be enrolled in the study and will be randomized to prulifloxacin or levofloxacin. Patient enrolment will be competitive.~The present study is planned to verify the microbiological and the clinical efficacy of a 28-day treatment period with prulifloxacin 600 mg in comparison with 28-day treatment period with levofloxacin 500 mg, both administered once daily, in patients with CBP. Safety and tolerability of a 28-day treatment period with prulifloxacin 600 mg will be also evaluated in comparison to levofloxacin 500 mg.~Levofloxacin 500 mg tablets has been selected as treatment comparator because it represents the drug of choice authorised for the treatment of CBP. Consequently, the dosage regimen to be administered to the patients is consistent with that reported in the relevant SPC.
The aim of the study is to assess the efficacy and safety of prulifloxacin in comparison to levofloxacin in the treatment of patients affected by CBP.