Table 3.

Frequency of symptoms by serology status.

Clinical Criterion	Seropositive	Seronegative	p-Value
n	43	2006
At least one symptom	% 83.7	% 47.6	3 × 10−6
At least one intense symptom	60.5	13.1	1 × 10−18
Clinical criteria poss Covid-19 *	74.4	23.8	3 × 10−14
Fever	62.8	14.7	1 × 10−17
Cough	53.5	12.1	1 × 10−15
Fatigue	48.8	10.9	6 × 10−11
Shortness of breath	46.5	6.6	6 × 10−13
Aches	41.9	8.2	2 × 10−14
Anosmia/ageusia	39.5	2.3	5 × 10−44
Muscle pain	37.2	10.4	3 × 10−8
Sore throat	34.9	14.7	3 × 10−4
Headaches	32.6	10.1	2 × 10−6
Rhinorrhea	30.2	16.6	0.02
Chest pain	25.6	6.3	6 × 10−17
Diarrhea	23.30	8.4	0.0006
Abdominal pain	20.9	6.8	0.0004
Loss of balance	14.0	4.0	0.001
Nausea	14.0	3.8	0.0009
Appetite loss	11.6	1.1	2 × 10−9
Skin rashes	7.0	4.9	0.52
Irritated eyes	4.7	6.0	0.70

* Definition of ECDC.