 6. A deep respiratory secretion specimen that was collected within 48 hours prior to randomization and after development of clinical signs and symptoms of HABP ideally prior to administration of systemic antimicrobial therapy. This can be obtained via a sputum sample expectorated sputum, bronchoalveolar lavage BAL including protected BAL or mini-BAL, protected specimen brush PSB, endotracheal tube aspirate ETA, pleural fluid, or lung parenchyma open-lung, transthoracic, or transbronchial biopsy. 