Number of viruses detected by PCR
| Viruses | RSV LRTI group | Other viral LRTI group |
| RSV A | 8 | 0 |
| RSV B | 19 | 0 |
| Rhinovirus | 8 | 21 |
| Adenovirus | 4 | 8 |
| Human metapneumovirus | 1 | 5 |
| Influenza A | 1 | 3 |
| Influenza B | 1 | 2 |
| Parainfluenza 1 | 3 | 3 |
| Parainfluenza 2 | 0 | 1 |
| Parainfluenza 3 | 0 | 6 |
| No. of occasions a virus was not detected | 4 | 12 |
Data are displayed as the number of occasions a virus was detected.
LTRI, lower respiratory tract infection; RSV, respiratory syncitial virus.