| Study region | HBs Ag (n/N) % | 95% CI | |
| Nairobi | 0/14 | 0 | [0.0; 23.2] |
| Coast | 0/0 | 0 | [0.0; 30.8] |
| Nyanza/Western | 1/12 | 8.3 | [0.2; 38.5] |
| Rift Valley | 7/28 | 25 | [10.7; 44.9] |
| Eastern | 2/9 | 22.2 | [2.8; 60.0] |
| Central | 0/21 | 0 | [0.0; 16.1] |
| Total | 10/94 | 10.6 | [5.2; 18.7] |