Research Article
Fifteen Years of Annual Mass Treatment of Onchocerciasis with Ivermectin Have Not Interrupted Transmission in the West Region of Cameroon
Table 5
Comparing baseline entomological data of 1996 at two fly collection sites and three during 2011.
| | Month/year of black fly collection | Baseline May 1996 | Followup, 2011 | | Black fly collection sites | Bafang (Basseu) | Foumbot (Maka) | Bafang | Foumbot | Massangam |
| | Number of Simulium caught | 5 | 166 | 5261 | 2856 | 12538 | | Number of Simulium dissected | 5 | 142 | 5261 | 2856 | 12138 | | Number of parous flies | 1 | 97 | 1502 | 1028 | 2845 | | Parous rate (%) | 20 | 68.3 | 28.5 | 36 | 23.4 | | Number of Simulium flies infected (L1, L2, L3] | 1 | 12 | 3 | 9 | 19 | | Infection rate (%) | 20.00 | 8.45 | 0.20 | 0.88 | 0.67 | | Number of Simulium flies infective L3 larval stage in the head | 20 | 2 | 0 | 2 | 5 | | Infective rate (%) | 20.0 | 2.11 | 0.00 | 0.19 | 0.18 | | Monthly biting rate per person | 75.0 | 1660.00 | na | na | na | | Monthly transmission potential* | 15.0 | 210.40 | na | na | na | | Annual biting rate per person | Na | na | 52,610 | 28,560 | 125,380 | | Annual transmission potential | Na | na | 0 | 70 | 310 |
|
|
