- Fever (87.9%)
- Dry cough (67.7%)
- Fatigue (38.1%)
- Sputum production (33.4%)
- Shortness of breath (18.6%)
- Sore throat (13.9%)
- Headache (13.6%)
- Muscle aches and pains (14.8%)
- Chills (11.4%)
- Nausea or vomiting (5.0%)
- Nasal congestion (4.8%)
- Diarrhea (3.7%)
- Coughing up blood (0.9%)
- Red eyes (0.8%)
- Anosmia (loss of sense of smell)