 Patients, who are considered suitable by their physicians to take part in this research, will have a physical examination including an Electrocardiogram ECG, blood and urine samples taken, as well as a sample of the secretions or tissue around their infection site. In addition, the site of the infection will be photographed. The patients will be randomly assigned one of the treatments: intravenous IVper oral PO moxifloxacin drug under evaluation or IV piperacillintazobactam followed by PO amoxicillinclavulanic acid i.e., one of the reference treatments for this kind of infection. The maximum treatment duration will be 21 days, and the minimum will be 7 days. During the hospitalization, the patients will have a physical examination every day. On Day 3-5 during therapy as well as at the end of treatment, the patients will have repeated examinations. These tests and evaluations will be repeated 14 to 28 days after the end of treatment. During this visit, blood and urine samples will be taken only if judged necessary by the physicians. 