Reported symptoms
| Symptoms | Frequency |
| Cough | 18 |
| Breathing difficulties | 16 |
| Fever/temperature | 16 |
| Malaise* | 15 |
| Difficulty sleeping | 11 |
| Feeding problems/appetite | 10 |
| Wheeze | 10 |
| Runny nose | 9 |
| Fatigue/tiredness | 6 |
| Vomit | 6 |
| Sore throat/hoarse voice | 5 |
| Earache | 2 |
| Pain | 2 |
| Headache | 1 |
| Fainting | 1 |
| Heart racing | 1 |
| Rash | 1 |
*Malaise was used as a term to categorise anything parents said referring to a change in behaviours, character or appearing unwell (1.1.1).