Table 1 Participant baseline characteristics

Age in years, mean (SD)

52 (10)

Women, n (%)

23 (58%)

Asymptomatic^a, 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 days^b, mean (SD)

4.6 (1.9)