Table 5.
Comparison of entomological indicators in the baseline and follow-up results in Touboro and Tchollire health districts of North Region, Cameroon
| Touboro health district | Tchollire health district | |||||
|---|---|---|---|---|---|---|
| Touboro | Douffin (tributary) | Mayo-Gallé | ||||
| Baseline | Follow-up | Baseline | Follow-up | Baseline | Follow-up | |
| Year of black fly collection | 1976* | 2008–2009 | 1977* | 2009–2010 | 1978* | 2009–2010 |
| Number of Simulium vector flies caught and dissected | 5,239 | 12,107 | 541 | 1,549 | 4,733 | 1,064 |
| Number of Simulium vector flies infected | 450 | 261 | 20 | 6 | 239 | 8 |
| Infection rate (%) | 8.6 | 2.1 | 3.7 | 0.4 | 5.1 | 0.8 |
| Infective rate (%) | 2.7 | 1.4 | 0.6 | 0.1 | 0.7 | 0.4 |
| Annual biting rate per person | 26,100 | 25,109 | 2,300 | 15,770 | 27,700 | 10,843 |
| Annual transmission potential (M.N.K.) | 2,767.0 | 543.4 | 157.0 | 20.7 | 377.0 | 40.0 |
*
Renz A, unpublished data.