Pathogens | Diagnostic method performed* | |||||
---|---|---|---|---|---|---|
Inpatients (N = 276) | Outpatients (N = 424) | Urinary Antigen (N = 678) | Sputum (N = 222 ) | Blood Culture (N = 221 ) | Serologic Test (N = 663 ) | |
Any pathogen identified | 196 (71) | 194 (45.7) | ||||
Conventional bacteria† | 136 (69.4) | 43 (22.2) | ||||
Streptococcus pneumoniae † | 127 (64.8) | 43 (22.2) | 155 (22.9) | 8 (3.6) | 24 (10.9) | |
Others bacteria | 9 (4.6) | 0 (0) | 4 (1.8) | 5 (2.3) | ||
Atypical pathogen† | 60 (30.6) | 130 (67) | ||||
Coxiella burnetii † | 15 (7.7) | 57 (29.4) | 72 (10.9) | |||
Mycoplasma pneumoniae | 22 (11.2) | 40 (20.6) | 62 (9.4) | |||
Chlamydia pneumoniae | 11 (5.6) | 26 (13.4) | 37 (5.6) | |||
Chlamydia psittaci | 1 (0.5) | 1 (0.5) | 2 (0.3) | |||
Legionella pneumophila † | 11 (5.6) | 6 (3.1) | 17 (3.5) | |||
Virus | 21 (10.7) | 35 (18) | ||||
Influenza virus | 6 (3.1) | 18 (9.3) | 24 (3.6) | |||
Parainfluenza virus | 15 (7.7) | 17 (8.8) | 32 (4.8) | |||
Total, mixed infection | 21 (10.7) | 14 (7.2) |