Bacterial agents | |||||
Pure bacterial infections (n = 75) | Viral–bacterial coinfections (n = 51) | Total | |||
Only one | Plus other bacterium | Plus virus a | Plus virus and other bacterium | N (%) | |
Streptococcus pneumoniae | 37 | 8 | 29 | 7 | 81 (49) |
Bordetella pertussis | 2 | 4 | 4 | 5 | 15 (9) |
Haemophilus influenzae | 2 | 5 | 5 | 2 | 14 (8) |
Mycoplasma pneumoniae | 7 | 3 | 10 (6) | ||
Chlamydophila pneumoniae | 5 | 1 | 1 | 7 (4) | |
Legionella pneumophila | 2 | 3 | 2 | 7 (4) | |
Enterobacteriaceae | 1 | 3 | 2 | 6 (4) | |
Moraxella catarrhalis | 2 | 1 | 2 | 5 (3) | |
Miscellaneous b | 1 | 1 | 1 | 3 (2) | |
Haemophilus parainfluenzae | 1 | 1 | 2 (1) | ||
Subtotal cases with bacteria | 60 | 126 (75)c | |||
Viral agents | |||||
Pure viral infections (n = 41) | Viral–bacterial coinfections (n = 51) | Total | |||
Only one | Plus other virus | Plus bacterium a | Plus bacterium and other virus | N (%) | |
Influenza viruses | 15d | 2 | 21 | 2 | 40 (24) |
Rhinovirus | 12 | 2 | 15 | 3 | 32 (19) |
Parainfluenza viruses | 3 | 4 | 1 | 8 (5) | |
Respiratory syncytial virus | 3 | 2 | 2 | 7 (4) | |
Metapneumovirus | 3 | 3 | 1 | 7 (4) | |
Enterovirus | 2 | 1 | 2 | 5 (3) | |
Adenovirus | 1 | 1 (0.6) | |||
Subtotal cases with viruses | 39 | 92 (55)c |