| veterinary center | Total No. tested | No. (%) positive for: | |
| Serotype A | Serotype O | ||
| Dembo | 15 | 7 (46.7) | 10 (66.7) |
| Hamakoussou | 22 | 16 (72.7) | 19 (86.4) |
| Djalingo | 18 | 12 (66.7) | 11 (61.1) |
| Mayo-Oulo | 15 | 10 (66.7) | 13 (86.7) |
| Total | 70 | 45 (64.3) | 53 (75.7) |