| Symptom | % Of patients with symptom |
|---|---|
| Persistent fever >38°C | 99–100 |
| Non-productive cough | 57–75 |
| Myalgia | 45–61 |
| Chills/rigor | 15–73 |
| Headache | 20–56 |
| Dyspnoea | 40–42 |
| Malaise | 31–45 |
| Nausea and vomiting | 20–35 |
| Diarrhoea | 20–25 |
| Sore throat | 13–25 |
| Dizziness | 4.2–43 |
| Sputum production | 4.9–29 |
| Coryza | 2.1–23 |
| Arthralgia | 10.4 |