| Study region | HBs Ag (n/N) % | 95% CI | |
| Nairobi | 0/24 | 0 | [0.0; 14.2] |
| Coast | 1/35 | 2.9 | [0.1; 14.9] |
| Nyanza/Western | 0/1 | 0 | [0.0; 97.5] |
| Rift Valley | 50/356 | 14 | [10.6; 18.1] |
| Eastern | 1/12 | 8.3 | [0.2; 38.5] |
| Central | 2/25 | 8.0 | [1.0; 26.0] |
| Total | 54/453 | 11.9 | [9.1; 15.3] |