Seroprevalence by demographic characteristics
| Participants tested, n | Seropositive participants, n | Unweighted seroprevalence, % (95% CI) | Weighted seroprevalence, % (95% CI)* | |
| Overall | 1893 | 53 | 2.8 (2.1 to 3.5) | 2.6 (1.9 to 3.4) |
| Age, years | ||||
| <10 | 340 | 5 | 1.5 (0.5 to 3.4) | 1.7 (0.2 to 3.2) |
| 10–19 | 384 | 9 | 2.3 (1.1 to 4.4) | 2.6 (0.8 to 4.2) |
| 20–39 | 451 | 6 | 1.3 (0.5 to 2.9) | 1.2 (0.2 to 2.3) |
| 40–59 | 359 | 19 | 5.3 (3.2 to 8.1) | 4.4 (2.4 to 6.4) |
| >60 | 359 | 14 | 3.9 (2.1 to 6.5) | 3.6 (1.6 to 5.6) |
| Rao-Scott Χ2 p value | 0.0032 | 0.0548 | ||
| Gender | ||||
| Female | 964 | 33 | 3.4 (2.4 to 4.8) | 3.3 (2.2 to 4.5) |
| Male | 929 | 20 | 2.2 (1.3 to 3.3) | 1.9 (1.0 to 2.8) |
| Rao-Scott Χ2 p value | 0.0939 | 0.0563 | ||
| Area of residence | ||||
| Rural | 1174 | 24 | 2.0 (1.3 to 3.0) | 1.8 (1.0 to 2.5) |
| Urban | 719 | 29 | 4.0 (2.7 to 5.7) | 4.2 (2.6 to 5.7) |
| Rao-Scott Χ2 p value | 0.0109 | 0.0023 | ||
*Post-stratified by district.