Table 1. Participant characteristics.
| Characteristic | General population, n (%) | Healthcare workers, n (%) |
|---|---|---|
| Age | n = 28,975 | n = 7,252 |
| 6–9 years | 2,892 (10.0) | — |
| 10–17 years | 5,798 (20.0) | — |
| 18–44 years | 12,522 (43.2) | 5,133 (70.8) |
| 45–60 years | 5,545 (19.1) | 1,997 (27.5) |
| >60 years | 2,218 (7.7) | 122 (1.7) |
| Gender | n = 28,975 | n = 7,252 |
| Male | 13,783 (47.6) | 3,523 (48.6) |
| Female | 15,160 (52.3) | 3,722 (51.3) |
| Other | 32 (0.1) | 7 (0.1) |
| Area of residence | n = 28,975 | — |
| Rural | 21,794 (75.2) | — |
| Urban non-slum | 5,266 (18.2) | — |
| Urban slum | 1,915 (6.6) | — |
| COVID-19-related symptoms | n = 28,975 | n = 7,252 |
| History of COVID-19 symptoms since January 2021 | 1,748 (6.0) | 925 (12.8) |
| COVID-19-related treatment | n = 1,729 | n = 925 |
| Medical care sought for symptomatic cases | 574 (33.2) | 558 (60.3) |
| History of hospitalisation | 140 (24.4) | 171 (30.6) |
| COVID-19 contact | n = 28,956 | n = 7,252 |
| History of contact with a known COVID-19 case | 2,129 (7.3) | 4,562 (62.9) |
| COVID-19 testing | n = 28,956 | n = 7,252 |
| Previously tested for COVID-19 | 4,372 (15.1) | 4,892 (67.4) |
| Previous positive COVID-19 test | 782 (17.9) | 1,354 (27.7) |
| COVID-19 vaccination status among adults | n = 20,268 | n = 7,252 |
| 0 dose | 12,599 (62.2) | 759 (10.5) |
| 1 dose | 5,038 (24.8) | 972 (13.4) |
| 2 doses | 2,631 (13.0) | 5,521 (76.1) |
| Type of vaccine | n = 7,669 | n = 6,493 |
| Covaxin | 587 (7.7) | 498 (7.7) |
| Covishield | 6,945 (90.6) | 5,973 (92.0) |
| Sputnik | 18 (0.2) | 6 (0.1) |
| Don’t know | 119 (1.6) | 16 (0.2) |