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 |
ND = Not done *Parous rate not calculated when No. of nuliparous + parous mosquitoes <25.