Comparative Study of Ceftaroline vs. Ceftriaxone in Adult Subjects With Community-Acquired Pneumonia

Inclusion Criteria: Subjects are required to meet the following inclusion criteria: * Community-acquired pneumonia * initial hospitalization, or treatment in an emergency room or urgent care setting * infection would require initial treatment with IV antimicrobials. Exclusion Criteria: Subjects must NOT meet any of the following exclusion criteria: * CAP suitable for outpatient therapy with an oral antimicrobial agent * respiratory tract infections not due to community-acquired bacterial * Non-infectious causes of pulmonary infiltrates * Pleural empyema * Infection with an atypical organism * History of any hypersensitivity or allergic reaction to any ß-lactam antimicrobial * History of any hypersensitivity or allergic reaction to clarithromycin or any macrolide/ ketolide