Microbiological analyses
| Bacterial* | Total population n=488 | Not hospitalised (n=432) | Hospitalised (n=56) | ||
| Streptococcus pneumoniae | n (%) | 4/494 (0.8%) | 4/438 (0.9%) | 0/56 (0 %) | NS |
| Staphylococcus aureus | n (%) | 2/494 (0.4%) | 2/438 (0.5%) | 0/56 (0%) | NS |
| Haemophilus spp. | n (%) | 2/494 (0.4%) | 2/438 (0.5%) | 0/56 (0%) | NS |
| Mycoplasma pneumoniae | n (%) | 3/494 (0.6%) | 3/438 (0.7%) | 0/56 (0%) | NS |
| Chlamydia pneumoniae | (%) | 2/494 (0.4%) | 2/438 (0.5%) | 0/56 (0%) | NS |
| Any bacterial infection | n (%) | 13/494 (2.6%) | 13/438 (3.0%) | 0/56 (0%) | NS |
| Viral† | |||||
| Adenovirus | n (%) | 82/494 (16.6%) | 71/438 (16.2%) | 11/56 (19.6%) | NS |
| Bocavirus | n (%) | 100/494 (20.2%) | 92/438 (21%) | 8/56 (20.5%) | NS |
| CoV HKU | n (%) | 0/494 (0%) | 0/438 (0%) | 0/56 (0%) | NS |
| CoV NL63 | n (%) | 1/494 (0.2%) | 1/438 (0.2%) | 0/56 (0%) | NS |
| CoV 229E | n (%) | 1/494 (0.2%) | 1/438 (0.2%) | 0/56 (0%) | NS |
| CoV OC43 | n (%) | 1/494 (0.2%) | 1/438 (0.2%) | 0/56 (0%) | NS |
| Influenza A | n (%) | 76/494 (15.4%) | 74/438 (16.9%) | 2/56 (15.6%) | NS |
| Influenza AH1 | n (%) | 64/494 (13%) | 63/438 (14.4%) | 1/56 (1.8%) | 0.001 |
| Influenza AH3 | n (%) | 6/494 (1.2%) | 6/438 (1.4%) | 0/56 (0%) | NS |
| Influenza B | n (%) | 9/494 (1.8%) | 8/438 (1.8%) | 1/56 (1.8%) | NS |
| HMPV | n (%) | 73/494 (14.7%) | 63/438 (14.4%) | 10/56 (15.0%) | NS |
| Parainfluenza 1 | n (%) | 11/494 (2.2%) | 10/438 (2.3%) | 1/56 (1.8%) | NS |
| Parainfluenza 2 | n (%) | 10/494 (2.0%) | 10/438 (2.3%) | 0/56 (0%) | NS |
| Parainfluenza 3 | n (%) | 4/494 (0.8%) | 3/438 (0.7%) | 1/56 (1.8%) | NS |
| Parainfluenza 4 | n (%) | 17/494 (3.4%) | 15/438 (3.4%) | 2/56 (3.6%) | NS |
| RSV A | n (%) | 164/494 (33.2%) | 144/438 (32.9%) | 20/56 (35.7%) | NS |
| RSV B | n (%) | 50/488 (10.1%) | 44/438 (10%) | 6/56 (10.7%) | NS |
| Rhino/enterovirus | n (%) | 295/494 (59.7%) | 263/438 (60%) | 32/56 (57.1%) | NS |
| Any virus | n (%) | 940/488448/494 (93.1%) | 409/432 (94.7%) | 51/56 (91.1%) | NS |
*Two other bacterial species were identified in the patients who were not hospitalised, but were not clinically associated with pneumonia (Escherichia coli and Shigella).
†In six cases, it was not possible to obtain a valid PCR run.
CoV, coronavirus; HMPV, Human Metapneumovirus; NS, not significant; RSV, Respiratory Synctial Virus.