Table 3.
Impact of exposure time on mortality and blood-feeding adjusted for the net condition; The difference in the odds of mosquito mortality at 24-h (M24) or 72-h (M72) and blood-feeding success (BFS)) for 100 pyrethroid-resistant Anopheles arabiensis exposed to Interceptor® and Interceptor® G2 with either a human arm or a membrane feeder as bait *.
| Assays | BFS | M24 | M72 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| % | OR | p-Value | % | OR | p-Value | % | OR | p-Value | |
| (95% CI) | (95% CI) | (95% CI) | (95% CI) | (95% CI) | (95% CI) | ||||
| Membrane | |||||||||
| 1 h-exposure | 1.2 (0.1–2.3) | 1 | 24.7 (17.0–32.4) | 1 | 38.9 (26.5–51.2) | 1 | |||
| 12 h-exposure | 4.6 (1.5–7.7) | 1.55 (1.08–2.22) | 0.017 | 43.3 (25.9–60.6) | 1.66 (1.46–1.89) | <0.001 | 68.8 (52.0–85.5) | 2.30 (2.02–2.62) | <0.001 |
| Human arm | |||||||||
| 1 h-exposure | NA | 20.3 (17.7–22.8) | 1 | 31.1 (26.1–36.1) | 1 | ||||
| 12 h-exposure | NA | 35.2 (22.7–47.6) | 2.26 (1.93–2.64) | <0.001 | 43.0 (29.6–56.3) | 1.66 (1.45–1.90) | <0.001 | ||
* Mosquitoes were exposed for either 1 h before being removed from the tunnel and placed in holding cups with access to sugar or left overnight in the tunnel for 12 h. Data presented are a mean proportion (%) with a 95% confidence interval (95% CI) and odds ratios (OR) derived from regression analysis with 95% CI adjusted for net conditions.