From: Community-acquired polymicrobial pneumonia in the intensive care unit: aetiology and prognosis
Microorganism | Monomicrobial aetiology (n= 157) | Polymicrobial aetiology (n= 39) | P value | Two pathogens (n= 33) | Three pathogens (n= 6) |
---|---|---|---|---|---|
Streptococcus pneumoniae | 94 (60) | 28 (72) | 0.17 | 23 (70) | 5 (83) |
Streptococcus pyogenes | 1 (1) | 1 (3) | 0.36 | 1 (3) | - |
Streptococcus viridans a | - | 1 (3) | 0.20 | 1 (3) | - |
Staphylococcus aureus (MSSA) | 4 (3) | 3 (8) | 0.12 | 2 (6) | 1 (17) |
Staphylococcus aureus (MRSA) | 5 (3) | 9 (23) | < 0.001 | 5 (15) | 4 (67) |
Haemophilus influenzae | 4 (3) | 4 (10) | 0.029 | 3 (9) | 1 (17) |
Moraxella catarrhalis | 1 (1) | 2 (5) | 0.041 | 1 (3) | 1 (17) |
Gram-negative enteric bacillib | 6 (4) | 7 (18) | 0.002 | 5 (15) | 2 (33) |
Pseudomonas aeruginosa | 6 (4) | 8 (21) | < 0.001 | 6 (18) | 2 (33) |
Respiratory viruses | 16 (10) | 15 (39) | < 0.001 | 14 (42) | 1 (17) |
Rhinovirus | 2 (1) | 2 (5) | 0.13 | 2 (6) | - |
Adenovirus | 1 (1) | 1 (3) | 0.36 | 1 (3) | - |
Respiratory syncitial virus | 2 (1) | 2 (5) | 0.13 | 2 (6) | - |
Influenza virus A | 10 (6) | 9 (23) | 0.002 | 8 (24) | 1 (17) |
Influenza virus B | 1 (1) | 1 (3) | 0.36 | 1 (3) | - |
Legionella pneumophila | 10 (6) | 1 (3) | 0.36 | 1 (3) | - |
Atypical | 10 (6) | 5 (13) | 0.18 | 4 (12) | 1 (17) |
Mycoplasma pneumoniae | 4 (3) | 2 (5) | 0.40 | 2 (6) | - |
Chlamydophila pneumoniae | 4 (3) | 2 (5) | 0.40 | 1 (3) | 1 (17) |
Coxiella burnetii | 2 (1) | 1 (3) | 0.49 | 1 (3) | - |