Skip to main content

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)

From: Entomological and parasitological impacts of indoor residual spraying with DDT, alphacypermethrin and deltamethrin in the western foothill area of Madagascar

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