| Infectious agent | No. (%) of cases (n = 298) | ||
|---|---|---|---|
| Alone | Coinfection | Total | |
| Respiratory syncytial virus | 73 (24.5) | 51 (17.1) | 124 (41.6) |
| Enterovirus/rhinovirus | 51 (17.1) | 60 (20.1) | 111 (37.2) |
| Influenza all subtypes | 36 (12.1) | 12 (4.0) | 48 (16.1) |
| Influenza A (H1N1) | 17 (5.7) | 19 (6.4) | 36 (12.1) |
| Parainfluenza all subtypes | 14 (4.7) | 13 (4.4) | 27 (9.1) |
| Human metapneumovirus | 11 (3.7) | 9 (3.0) | 20 (6.7) |
| Adenovirus | 4 (1.3) | 9 (3.0) | 13 (4.4) |
| Human coronavirus | 2 (0.7) | 7 (2.3) | 9 (3.0) |
| Bordetella pertussis | 1 (0.3) | 7 (2.3) | 8 (2.7) |
| Bocavirus | 0 (0.0) | 3 (1.0) | 3 (1.0) |
| Cytomegalovirus | 1 (0.3) | 1 (0.3) | 2 (0.7) |