Table 2 Summary of bioefficacy results from Equatorial Guinea and Ghana
Study site | Mosquito species | Wall substrate | Time post-intervention (Months) | Intervention | % Mosquito mortality (Total tested) | Adjusted Odds Ratio* (95% CI) for DL mosquito mortality relative to IRS | P Value |
|---|---|---|---|---|---|---|---|
Equatorial Guinea | An. gambiae s.l. | Wood | 3 | IRS | 96.7 (150) | 1 | |
DL | 97.3 (150) | 1.28 (0.31 – 5.18) | 0.733 | ||||
6 | IRS | 82.7 (150) | 1 | ||||
DL | 93.3 (150) | 3.0 (1.25 – 7.21) | 0.014 | ||||
12 | IRS | 11.3 (150) | 1 | ||||
DL | 93.3 (150) | 119.5 (47.2 – 302. 9) | <0.0001 | ||||
Ghana | An. gambiae s.s. lab strain | Mud | 3 | IRS | 98.2 (493) | 1 | |
DL | 99.9 (998) | 18.6 (2.23 – 155.4) | 0.007 | ||||
6 | IRS | 69.4 (509) | 1 | ||||
DL | 99.9 (966) | 430.8 (59.6 – 3114.6) | <0.0001 | ||||
Concrete | 3 | IRS | 99.8 (486) | 1 | |||
DL | 99.9 (1026) | 2.11 (0.13 – 33.8) | 0.60 | ||||
6 | IRS | 94.2 (536) | 1 | ||||
DL | 98.7 (1017) | 24.2 (2.30 – 254.8) | 0.008 | ||||
An. gambiae s.s. field strain | Mud | 3 | IRS | 90.6 (862) | 1 | ||
DL | 97.9 (1845) | 4.93 (3.32 – 7.32) | <0.0001 | ||||
6 | IRS | 59.5 (975) | 1 | ||||
DL | 93.3 (1916) | 9.52 (7.60 – 11.92) | <0.0001 | ||||
Concrete | 3 | IRS | 96.2 (867) | 1 | |||
DL | 96.7 (1809) | 1.16 (0.76 – 1.79) | 0.50 | ||||
6 | IRS | 85.9 (783) | 1 | ||||
DL | 95.4 (1835) | 3.38 (1.61 – 7.08) | 0.001 |