Table 2.
Features used to define exposure to SARS-CoV-2 in cases and controls, at both household and individual levels
| Cases |
Controls |
Comparison of households, p | |||
|---|---|---|---|---|---|
| Householdsan = 77 | Individuals n = 262 | Householdsan = 74 | Individuals n = 230 | ||
| Symptoms | |||||
| Anosmia, ageusia | 10 (13.0) | 16 (6.1) | 4 (5.4) | 4 (1.7) | 0.16 |
| Other symptomsb | 41 (53.2) | 59 (22.5) | 15 (20.3) | 22 (9.6) | <10−3 |
| Contact with a person diagnosed with COVID-19 | |||||
| Any contact | 30 (39.0) | 40 (15.3) | 22 (29.7) | 29 (12.6) | 0.30 |
| Prolonged contact without protection | 18 (23.4) | 21 (8.0) | 8 (10.8) | 13 (5.7) | 0.05 |
| Activities outside the home | |||||
| Healthcare workers | 19 (24.7) | 25 (9.5) | 12 (16.2) | 14 (6.1) | 0.23 |
| Other regular activities outside the home | 31 (40.3) | 43 (16.4) | 25 (33.8) | 36 (15.7) | 0.50 |
| RT-PCR testc | |||||
| Positive | 2 (2.6) | 2 (0.8) | 0 | 0 | — |
| Tested | 6 (7.8) | 6 (2.3) | 2 (2.7) | 2 (0.9) | — |
a
Features of at least one individual in the household.
b
Among fever, asthenia, rhinitis, sore throat, cough, dyspnoea.
c
Period when RT-PCR testing was restricted to hospitalized patients or health care workers.