Table 6 Indoor resting density and blood feeding rates of An. gambiae s.l. collected by PSCs method after 2019, 2020 and 2021 IRS intervention in communes under IRS
Communes | Period | Nb of room | Nb of An. gambiae s.l. collected | Nb of blood feed | Rest density per room | Blood feeding rate | |||
|---|---|---|---|---|---|---|---|---|---|
Value | RR [95% CI] | P-value | Proportion (%) | P-value | |||||
(Wald) | |||||||||
Kandi + Gogounou (under IRS in Alibori) | 2019 (PM 300CS) | 120 | 25 | 20 | 0.2 | 1 | – | 80.0 | – |
2020 (Clo + Del) | 120 | 102 | 75 | 0.9 | 4.08 [2.61–6.60] | < 0.0001 | 73.5 | 0.68 | |
2021 (Clo 50WG) | 160 | 171 | 125 | 1.1 | 5.13 [3.36–8.15] | < 0.0001 | 73.1 | 0.62 | |
Djougou + Copargo (under IRS in Donga) | 2019 (PM 300CS) | 120 | 48 | 34 | 0.4 | 1 | – | 70.8 | – |
2020 (Clo + Del) | 120 | 118 | 77 | 1.0 | 2.46 [1.74–3.51] | < 0.0001 | 65.3 | 0.61 | |
2021 (Clo 50WG) | 160 | 234 | 214 | 1.5 | 3.66 [2.67–5.10] | < 0.0001 | 91.5 | 0.0002 | |