| State/LGA | Household surveyed | Samples collected |
| Bauchi | 300 | 295 |
| Ningi | 100 | 97 |
| Shira | 101 | 100 |
| Tafawa Balewa | 99 | 98 |
| Jigawa | 301 | 297 |
| Gumel | 100 | 100 |
| Kiyawa | 101 | 100 |
| Taura | 100 | 97 |
| Kano | 301 | 300 |
| Bichi | 101 | 100 |
| Dawakin Tofa | 100 | 100 |
| Kunchi | 100 | 100 |
| Katsina | 300 | 300 |
| Dutsinma | 100 | 100 |
| Jibia | 100 | 100 |
| Mashi | 100 | 100 |
| Kebbi | 274 | 267 |
| Aliero | 79 | 77 |
| Dandi | 97 | 97 |
| Maiyama | 98 | 93 |
| Total | 1476 | 1459 |