Table 1 Characteristics of residence units
From: Risk factors for SARS-CoV-2 transmission in student residences: a case-ascertained study
Total (n(%)) (n = 200) | Residence units with secondary cases (n(%)) (n = 68) | Residence units without secondary cases (n (%)) (n = 132) | |
|---|---|---|---|
Symptoms of index case | – | – | – |
Present | 154 (77) | 57 (83.8) | 97 (73.5) |
Not present | 34 (17.0) | 4 (58.8) | 30 (22.7) |
Not reported | 12 (6.0) | 7 (10.3) | 5 (3.8) |
Shared kitchen | – | – | – |
No | 14 (7) | 4 (5.9) | 10 (7.6) |
≤ 5 students | 29 (14.5) | 8 (11.8) | 21 (15.9) |
6-10 students | 60 (30.0) | 21 (30.9) | 39 (29.5) |
11-15 students | 44 (22) | 13 (19.1) | 31 (23.5) |
16-20 students | 19 (7.8) | 10 (14.7) | 9 (6.8) |
> 20 students | 18 (9.5) | 10 (14.7) | 8 (6.0) |
Not reported | 16 (8.0) | 2 (2.9) | 14 (10.6) |
Shared sanitary facilities | – | – | – |
No | 52 (26.0) | 14 (20.6) | 38 (28.8) |
≤ 5 students | 43 (21.5) | 16 (23.5) | 27 (20.5) |
6-10 students | 52 (26.0) | 17 (25.0) | 35 (26.5) |
11-15 students | 22 (11) | 9 (13.2) | 13 (9.8) |
16-20 students | 9 (4.5) | 5 (7.4) | 4 (3.0) |
> 20 students | 5 (2.5) | 4 (5.9) | 1 (0.8) |
Not reported | 17 (8.5) | 3 (4.4) | 14 (10.6) |
External infection source | – | – | – |
Yes | 107 (53.5) | 32 (47.1) | 75 (56.8) |
No | 39 (19.5) | 15 (22.1) | 24 (18.2) |
Not reported | 54 (27.0) | 21 (30.9) | 33 (25.0) |
Social gathering | – | – | – |
Yes | 100 (50.5) | 48 (70.6) | 52 (39.4) |
No | 49 (24.5) | 10 (14.7) | 39 (29.5) |
Not reported | 51 (25.5) | 10 (14.7) | 41 (33.1) |
Index case present | – | – | – |
Yes | 167 (83.5) | 58 (85.3) | 109 (82.6) |
No | 33 (16.5) | 10 (14.7) | 23 (17.4) |