Table 2 Isolation of bacteria from patients admitted with severe community acquired pneumonia (n = 189)
From: Etiology and outcome of severe community acquired pneumonia in immunocompetent adults
Etiological agent | No. of patients with positive cultures | No. of patients who died |
|---|---|---|
Staphylococcus aureus (7 from blood culture, 5 from tracheal aspirate, 1 from BAL, 2 from sputum) | 15 | 8 (53) |
Streptococcus pneumonia (11 from blood culture, 1 from tracheal aspirate, 2 from sputum) | 14 | 4 (29) |
Pseudomonas aeruginosa (3 from blood culture, 3 from tracheal aspirate, 2 from BAL, 1 from sputum) | 9 | 8 (89) |
Klebsiella pneumonia (5 from tracheal aspirate, 1 from BAL) | 6 | 3 (50) |
Mycobacterium tuberculosis (2 from BAL) | 2 | 1 (50) |
Moraxella catarrhalis (Tracheal aspirate) | 1 | 1 (100) |
Burkholderia pseudomallei (Tracheal aspirate) | 1 | 1 (100) |
Nocardia asteroids (Pleural fluid) | 1 | 1 (100) |
Streptococcus milleri (Pleural fluid) | 1 | 0 |
Number of pathogens isolated | 50 | 27 (54) |
Number of patients with known etiology* | 47 | 25 (53) |
Number of patients with unknown etiology | 142 | 71 (50) |