Table 1.
Characteristics of participants.
| COVID-19 Group a | Healthcare Worker Group | |||||
|---|---|---|---|---|---|---|
| Collection Time Point b | D0 | D0 + 10 | D0 + 30 | D0 | D0 + 10 | D0 + 30 |
| Participants, n (COVID+ c, n) | 138 (105) | 79 (16) | 20 (0) | 51 | 40 | 32 |
| Age (years), median (IQR) | 37.4 (23–52) | 37.7 (24–52) | 48 (39.5–57.3) | 36.1 (27–45.5) | 38.4 (28.8–46.8) | 37.7 (27.8–46.8) |
| Male, n (%) | 68 (49.3%) | 42 (53.2%) | 10 (50.0%) | 22 (43.1%) | 18 (45.0%) | 16 (48.5%) |
| Onset of symptoms before D0 test (days), median (IQR) | 2.2 (1–3) | / | ||||
| Symptoms at presentation, n (%) | 89 (64.5%) | 0 (0.0%) | ||||
| Headache, n (%) | 38 (27.5%) | / | ||||
| Tiredness, n (%) | 26 (18.8%) | / | ||||
| Cough, n (%) | 24 (17.4%) | / | ||||
| Fever, n (%) | 21 (15.2%) | / | ||||
| Myalgia, n (%) | 20 (14.5%) | / | ||||
| Breathing difficulties, n (%) | 12 (8.7%) | / | ||||
| Anosmia/Ageusia, n (%) | 9 (6.5%) | / | ||||
| Sore throat, n (%) | 7 (5.1%) | / | ||||
| Diarrhea, n (%) | 7 (5.1%) | / | ||||
| Others, n (%) | 4 (2.9%) | / | ||||
a Tested positively for SARS-CoV-2 by RT-qPCR on NPSs less than five days before enrollment. b Saliva sampled ten (D0 + 10) and thirty (D0 + 30) days after the first collection (D0). c Tested positively for SARS-CoV-2 by RT-qPCR on NPSs the sampling day (D0). Abbreviations: IQR, interquartile range; NPS, nasopharyngeal swab; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.