| Study region | HBsAg (n/N) % | 95% CI | |
| Nairobi | 4/45 | 8.9 | [2.5; 21.2] |
| Coast | 0/5 | 0 | [0.0; 52.2] |
| Nyanza/Western | 0/1 | 0 | [0.0; 97.5] |
| Rift Valley | 7/20 | 35 | [15.4; 59.2] |
| Eastern | 1/13 | 33.3 | [0.8; 90.6] |
| Central | 0/3 | 0 | [0.0; 70.8] |
| Total | 12/77 | 15.6 | [8.3; 25.6] |