Table 3 Standardised WHOPES cone tests for permethrin-treated (0.52%) and untreated fabric, both before and after use in the field
From: Field evaluation of personal protection methods against outdoor-biting mosquitoes in Lao PDR
Mosquito species | Fabric treatment | Before/after fieldworka | Total no. exposed | KD after exposure (95% CI) | KD 1 h after exposure (95% CI) | Mortality after 24 h (95% CI) |
|---|---|---|---|---|---|---|
Aedes albopictus IPL strain | Untreated | New | 239 | 0.8 (-0.3–2.0) | 0 | 2.5 (-0.1–5.1) |
After (2 weeks) | 242 | 0 | 0 | 1.6 (0–3.3) | ||
After (4 weeks) | 239 | 2.9 (1.4–4.4) | 8.1 (5.7–10.6) | 2.5 (1.1–3.9) | ||
Permethrin-treated | New | 240 | 13.8 (7.9–19.6) | 40.4 (32.1–48.8) | 25.0 (17.8–32.2) | |
After (2 weeks) | 238 | 2.9 (0.8–5.1) | 43.3 (36.9–49.6) | 26.5 (20.8–32.1) | ||
After (4 weeks) | 239 | 3.4 (1.1–5.6) | 44.8 (38.4–51.1) | 30.1 (24.3–36.0) | ||
Aedes aegypti USDA strain | Untreated | New | 240 | 0 | 0 | 0.4 (-0.4–1.3) |
After (2 weeks) | 240 | 0 | 0 | 0.4 (-0.4–1.2) | ||
After (4 weeks) | 241 | 0 | 0 | 0.8 (0.0–2.0) | ||
Permethrin-treated | New | 238 | 4.5 (0.4–8.5) | 71.3 (63.6–78.9) | 26.2 (16.7–35.8) | |
After (2 weeks) | 240 | 5.8 (2.8–8.8) | 46.3 (39.9–52.6) | 20.8 (15.7–26.0) | ||
After (4 weeks) | 239 | 7.5 (4.2–10.9) | 31.4 (25.5–37.3) | 25.1 (19.6–30.6) |