Table 2.
Clinical presentation of infants infected with a single pathogen
| Characteristic | Age | ||||||
|---|---|---|---|---|---|---|---|
| <3 months | 3–12 months | ||||||
| RSV (n = 30) | Influenza (n = 3) | hCoVs (n = 3) | hMPV (n = 1) | Bocavirus (n = 1) | RSV (n = 22) | Mycoplasma pneumoniae (n = 1) | |
| Onset, no. (%) | |||||||
| Gradual | 25 (83.3) | 2 (66.7) | 2 (66.7) | 0 (0.0) | 0 (0.0) | 14 (63.6) | 1 (100.0) |
| Acute | 5 (16.7) | 1 (33.3) | 1 (33.3) | 1 (100.0) | 1 (100.0) | 8 (36.4) | 0 (0.0) |
| Rectal temperature ≥38°C, no. (%) | 9 (30.0) | 2 (66.7) | 1 (33.3) | 0 (0.0) | 1 (100.0) | 9 (40.9) | 1 (100.0) |
| Severe symptoms, no. (%) | |||||||
| Tachypnoea ≥60 breaths/min | 20 (66.7) | 1 (33.3) | 3 (100.0) | 0 (0.0) | 1 (100.0) | 10 (45.5) | 0 (0.0) |
| Tachycardia ≥180 beats/min | 11 (36.7) | 0 (0.0) | 1 (33.3) | 0 (0.0) | 0 (0.0) | 6 (27.3) | 0 (0.0) |
| Nasal flaring | 23 (76.7) | 1 (33.3) | 3 (100.0) | 0 (0.0) | 1 (100.0) | 15 (68.2) | 1 (100.0) |
| Prolonged expiratory phase with wheezes | 30 (100.0) | 3 (100.0) | 3 (100.0) | 1 (100.0) | 1 (100.0) | 22 (100.0) | 1 (100.0) |
| Pulse oximetry <92% | 10 (33.3) | 0 (0.0) | 2 (66.7) | 0 (0.0) | 0 (0.0) | 2 (9.1) | 0 (0.0) |
| Dehydration | 20 (66.7) | 0 (0.0) | 2 (66.7) | 0 (0.0) | 0 (0.0) | 11 (50.0) | 0 (0.0) |
| X‐ray with evidence of pneumonia, no. (%) | 17 (56.7) | 1 (33.3) | 1 (33.3) | 0 (0.0) | 1 (100.0) | 8 (36.4) | 1 (100.0) |
RSV, respiratory syncytial virus; hCoVs, human coronaviruses; hMPV, human metapneumovirus. There were no significant differences between the pathogens or age groups.