| Demographic & occupational characteristics | Total N (%) | SARS-CoV-2 serological status | p-value | ||
| Positive n (%) | Negative n (%) | Borderline zone n (%) | |||
| Sex | |||||
| Male | 407 (57.6) | 144 (35.4%) | 251 (61.7%) | 12 (2.9%) |
|
| Female | 300 (42.4) | 91 (30.3%) | 206 (68.7%) | 3 (1.0%) | 0.057 |
| Total | 707 (100) | 235 (33.2%) | 457 (64.6%) | 15 (2.1%) |
|
| Age group | |||||
| 10-19 | 274 (38.8) | 74 (27.0%) | 198 (72.3%) | 2 (0.7%) |
|
| 20-29 | 154 (22.0) | 58 (37.7%) | 92 (59.7%) | 4 (2.6%) |
|
| 30-39 | 101 (14.3) | 37 (36.6%) | 62 (61.4%) | 2 (2.0%) |
|
| 40-49 | 69 (9.8) | 28 (40.6%) | 41 (59.4%) | 0 (0.0%) |
|
| 50-59 | 60 (8.5) | 23 (38.3%) | 36 (60.0%) | 1 (1.7%) |
|
| 60 or above | 49 (6.9) | 15 (30.6%) | 28 (57.1%) | 6 (12.2%) | 0.001 |
| Total | 707 (100) | 235 (33.2%) | 457 (64.6%) | 15 (2.1%) |
|
| Occupation | |||||
| Agriculture | 35 (5.0) | 9 (25.7%) | 24 (68.6%) | 2 (5.7%) |
|
| Health Care worker | 141 (19.9) | 40 (28.4%) | 96 (68.1%) | 5 (3.6%) |
|
| Students | 310 (43.9) | 90 (29.0%) | 218 (70.3%) | 2 (0.6%) |
|
| Business (Buying/selling | 124 (17.5) | 62 (50.0%) | 59 (47.6%) | 3 (2.4%) |
|
| Fishermen | 23 (3.3) | 10 (38.1%) | 12 (52.2%) | 1 (4.4%) |
|
| Skilled manual work | 42 (5.9) | 16 (38.1%) | 25 (59.5%) | 1 (2.4%) |
|
| Other | 32 (4.5) | 8 (25.0%) | 23 (71.9%) | 1 (3.1%) |
|
| Total | 707 (100) | 235 (33.2%) | 457 (64.6%) | 15 (2.1%) | 0.002 |
| Setting | |||||
| Rural | 362 (51.2) | 115 (31.8%) | 237 (65.5%) | 10 (2.8%) |
|
| Urban | 345 (48.8) | 120 (34.8%) | 220 (63.8%) | 5 (1.4%) | 0.368 |
| Total | 707 (100) | 235 (33.2%) | 457 (64.6%) | 15 (2.1%) |
|
| Districts | |||||
| Chakechake | 70 (9.9) | 15 (21.4%) | 54 (77.1%) | 1 (1.4%) |
|
| Kaskazini A | 173 (24.5) | 48 (27.7%) | 118 (68.2%) | 7 (4.1%) |
|
| Kati | 107 (15.1) | 35 (32.7%) | 71 (66.4%) | 1 (0.9%) |
|
| Kusini | 27 (3.8) | 5 (18.5%) | 20 (74.1%) | 2 (7.4%) |
|
| Magharibi B | 78 (11.0) | 28 (35.9%) | 46 (59.0%) | 4 (5.1%) |
|
| Mjini | 145 (20.5) | 64 (44.1%) | 81 (55.9%) | 0 (0.0%) |
|
| Mkoani | 55 (7.8) | 27 (49.1%) | 28 (50.9%) | 0 (0.0%) |
|
| Wete | 52 (7.3) | 13 (33.2%) | 39 (75.0%) | 0 (0.0%) | 0.001 |
| Total | 707 (100) | 235 (33.2%) | 457 (64.6%) | 15 (2.1%) |
|
| Occupation risk groups | |||||
| Students | 304 (43.0) | 88 (28.9%) | 214 (70.4%) | 2 (0.7%) |
|
| Health care worker | 165 (23.3) | 45 (27.3%) | 115 (69.7%) | 5 (3.0%) |
|
| Market attendees | 238 (33.7) | 102 (42.9%) | 128 (53.8%) | 8 (3.4%) | 0.001 |
| Total | 707 (100) | 235 (33.2%) | 457 (64.6%) | 15 (2.1%) |
|
| Island | |||||
| Unguja | 530 (75.0) | 180 (34.0%) | 336 (63.4%) | 14 (2.6%) |
|
| Pemba | 177 (25.0) | 55 (31.1%) | 121 (68.4%) | 1 (0.5%) | 0.171 |
| Total | 707 | 235 (33.2%) | 457 (64.6%) | 15 (2.1%) |
|