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Participant baseline characteristics
| Age in years, mean (SD) | 52 (10) |
| Women, n (%) | 23 (58%) |
| Asymptomatica, n (%) | 6 (15%) |
| Symptoms, n (%) | 34 (85%) |
| Muscle pain | 9 (23%) |
| Fatigue | 9 (23%) |
| Nasal congestion | 4 (10%) |
| Fever | 9 (23%) |
| Cough | 11 (28%) |
| Sore throat | 11 (28%) |
| Nausea/vomiting | 2 (5%) |
| Agnosia | 2 (5%) |
| Symptom debut prior to inclusion in daysb, mean (SD) | 4.6 (1.9) |
aNo symptoms prior to testing
bIn patients with symptoms as opposed to exposure only
