All participants, no (%) | Seropositive, no (%) | Seronegative, no (%) | P valuea | |
---|---|---|---|---|
176 | 30 (17) | 146 (83) | ||
Demographics | ||||
Age, mean (SD) | 45 (11) | 42 (12) | 46 (11) | .121 |
Gender, female n (%) | 136/175 (78) | 22 (73) | 114 (79) | .630 |
Community exposure | ||||
Transportation | 163 | .802 | ||
Private (include biking) | 130 | 22 (77) | 108 (80) | |
Public | 33 | 6 (21) | 27 (20) | |
No. of household member, med (IQR) | 3 (1–4) | 3 (1–4) | 3 (1–4) | |
Close contact in the community with a person positive for SARS-CoV-2 within the prior 20 days | 29/162 (18) | 8 (28) | 21 (16) | .179 |
Occupational exposure | ||||
Healthcare workers | 141 (80) | 25 (83) | 116 (79) | .803 |
Professional category | ||||
Nurses | 48 | 7 (23) | 41 (28) | |
Physicians | 9 | 5 (17) | 4 (3) | |
Nursing assistants | 61 | 11 (37) | 50 (34) | |
Allied health professional | 23 | 2 (7) | 21 (14) | |
Office workers | 7 | 2 (7) | 5 (3) | |
Hospital cleaners | 28 | 3 (10) | 25 (17) | |
Work rate (%) | 169 | .300 | ||
≤ 80 | 78 (46) | 10 (36) | 68 (48) | |
> 80 | 91 (54) | 18 (64) | 73 (52) | |
Close contact with a patient positive for SARS-CoV-2 (< 1 m) within the prior 20 days | 131/169 (78) | 27 (90) | 104 (75) | .091 |
Close contact with a healthcare worker positive for SARS-CoV-2 (< 1 m) within the prior 20 days | 127/166 (77) | 23 (79) | 104 (76) | .812 |
Aerosol-generating procedures within the prior 20 days | 28/133 (21) | 4 (16) | 24 (22) | .595 |
Flat sharing with another healthcare worker | 9/161 (6) | 0 | 9 (7) | .365 |
Eating at the hospital cafeteria | 124/170 (73) | 21 (72) | 103 (73) | 1 |
Carpooling with healthcare workers | 26/160 (16) | 2 (7) | 24 (18) | .257 |
IPCb measures | ||||
In case of contact with COVID-19–positive patients | ||||
Use of a respirator (FFP2/N95) | 14/163 (9) | 2 (7) | 12 (9) | 1 |
Use of a surgical mask | 117/169 (69) | 25 (83) | 92 (66) | .081 |
Clinical data | ||||
Presence of symptoms within the prior 20 day | 127/167 (76) | 27 (93) | 100 (73) | .017 |
Cough | 40/164 (24) | 14 (48) | 26 (19) | |
Fever | 36/163 (22) | 15 (52) | 21 (16) | |
Headache | 85/164 (52) | 21 (72) | 64 (47) | |
Cold | 55/164 (34) | 11 (38) | 44 (33) | |
Sore throat | 59/164 (36) | 10 (34) | 49 (36) | |
Myalgia | 56/163 (34) | 15 (52) | 41 (31) | |
Underwent PCR testingc | 56/138 (41) | 17 (61) | 39 (36) | .018 |
Positive | 15/21 (71) | 13 (81) | 2 (40) | |
Requiring hospitalization | 1/10 (10) | 1 (10) | 0 |