Table 1 Residual density and blood feeding rates of An. gambiae s.l. collected in districts under IRS and control districts after 2017 and 2018 IRS campaigns in Alibori and Donga
Period | Districts | Nb of room | Nb An. gambiae (s.l.) collected | Density/Room | Unfed | Fed | Gravid | Half-Gravid | Blood feeding rate % | P- value |
|---|---|---|---|---|---|---|---|---|---|---|
June 2017–Dec 2017 | Kandi | 246 | 47 | 0.19 | 16 | 31 | 0 | 0 | 65.96 | 0.043 |
Gogounou | 239 | 114 | 0.48 | 45 | 67 | 1 | 1 | 59.65 | 0.0001 | |
Bembèrèkè (control) | 210 | 184 | 0.88 | 13 | 139 | 22 | 10 | 80.98 | – | |
Djougou | 223 | 54 | 0.24 | 21 | 32 | 0 | 1 | 61.11 | 0.105 | |
Copargo | 203 | 84 | 0.41 | 21 | 61 | 0 | 2 | 75 | 1 | |
Kouande (control) | 60 | 136 | 2.27 | 7 | 99 | 28 | 2 | 74.26 | – | |
Total treated districts | 911 | 299 | 0.33 | 103 | 191 | 1 | 4 | 65.22 | 0.0005 | |
Total control districts | 270 | 320 | 1.19 | 20 | 238 | 50 | 12 | 78.13 | – | |
June 2018–Nov 2018 | Kandi | 80 | 28 | 0.35 | 2 | 22 | 3 | 1 | 82.14 | 1 |
Gogounou | 80 | 21 | 0.26 | 4 | 17 | 0 | 0 | 80.95 | 1 | |
Bembèrèkè (control) | 78 | 126 | 1.62 | 21 | 96 | 4 | 5 | 80.16 | – | |
Djougou | 82 | 22 | 0.27 | 3 | 19 | 0 | 0 | 86.36 | 1 | |
Copargo | 80 | 50 | 0.63 | 12 | 32 | 4 | 2 | 68 | 0.119 | |
Kouande (control) | 40 | 39 | 0.98 | 3 | 33 | 4 | 0 | 84.62 | – | |
Total treated districts | 322 | 121 | 0.38 | 21 | 90 | 7 | 3 | 76.86 | 0.452 | |
Total control districts | 118 | 165 | 1.4 | 24 | 129 | 8 | 5 | 81.21 | – |