Table 1 Transmission indices of onchocerciasis by Simulium damnosum complex along Osun River, Southwestern Nigeria
Parameters | Osun Budepo | Osun Eleja | Osun Ogbere |
|---|---|---|---|
Total flies dissected | 692 | 159 | 621 |
No(%) of parous flies | 319 (46.10) | 67 (42.13) | 251 (40.4) |
No (%) of nulliparous flies | 373 (53.90) | 92 (57.86) | 370 (59.58) |
Month(%) with highest parous flies | Mar (87.5) | Feb (100) | Dec (66.7) |
Month(%) with lowest parous flies | Sep (33.17) | Sep (30.0) | Jun (32.16) |
No of flies infected with O. volvulus | 0 | 0 | 0 |
Annual biting rate | 10,494 | 2,412 | 9,419 |
Maximum monthly biting rate | 3,075 (Sep) | 450 (Sep&Oct) | 2,250 (Jun) |
Minimum monthly biting rate | 47 (Jan) | 0 (Dec&Jan) | 28 (Feb) |