Advertisement
Table 6 Number of Anopheles funestus and parous rate (PR), per trimester (T) before and after indoor residual spraying (IRS) with DDT or pyrethroid (pyr)
| Village | Andranonahoatra | Soanierana | Analamiranga | |||
|---|---|---|---|---|---|---|
| No. | PR (%) | No. | PR (%) | No. | PR (%) | |
| Oct 02-Feb 03 (pre-IRS) | 377 | 86.4 | 241 | 90 | 629 | 87.5 |
| Mar 03-May 03 (T1 DDT) | 68 | 75 | 263 | 82 | 1,042 | 85.6 |
| Jun 03-Aug 03 (T2 DDT) | 22 | 95 | ND | ND | 460 | 96.5 |
| Sept 03-Nov 03 (T3 DDT) | 16 | 12/16* | 21 | 76 | 96 | 82.2 |
| Dec 03-Feb 04 (T4 DDT) | 46 | 85 | 36 | 72 | 451 | 92.9 |
| Mar 04-May 04 (T1 pyr) | 73 | 90 | 76 | 92 | 995 | 86.4 |
| Jun 04-Aug 04 (T2 pyr) | 10 | 5/10* | 24 | 92 | 499 | 94.9 |
| Sept 04-Nov 04 (T3 pyr) | 23 | 87 | 20 | 95 | 109 | 93.5 |
| Dec 04-Feb 05 (T4 pyr) | 50 | 94 | 27 | 89 | 378 | 92.0 |
| Overall | 685 | 85.6 | 708 | 86.0 | 4,659 | 89.4 |
